Datasheet MH88400-1, MH88400-2, MH88400-3 Datasheet (MITEL)



MH88400

Line Interface Circuit

Preliminary Information

Features

• FAX and Modem interf ace

• Suitable for V.29 FAX & V.22 bis Da ta

• Allows caller i dent ificatio n

• Variants match German, UK, 600

Ω & 900Ω

network im pedan ces

• Isolation circuitry conforms to international PTT
requirements

• Transformerless 2-4 W ire conversi on

• Loop star t oper ation

• Pulse and DT MF operati on

• Accommo date s extern al mo nitor ph one

• Line state dete ction out put s:

-loop current/ringing outputs

-monitor phon e sw itch h ook

• Single +5 V ope ration

Applications

Interface to Central Office for:

•DAA

• Modem

•FAX

• Answering M achi ne

• Terminal Equipm ent

ISSUE 1 April 1995

Ordering Informa tion

MH88400-1 14 Pin DIL Package
MH88400-2 14 Pin DIL Package
MH88400-3 14 Pin DIL Package

0°C to 70°C

Descript io n

The Mitel MH88400 Line Interface Circuit provides a
complete audio and signalling link between audio
equipment and central office. The functions provided
by the MH88400 include 2-4 Wire conversion, loop
seizure, external monitor phone switch hook status
and ringing voltage and loop current detection. The
device is fabricated as a thick film hybrid which
incorporates various technologies for optimum circuit
design, high voltage isolation and very high
reliability.

Variants are provided to meet German (-1) and UK
(-3) and general 600Ω (-2) line impedance (see
section on Line Impedances).

Isolation Barrier

Transformer

Isolation

Opto-

TIP

RING

Active

Termination

TXIN

TF

RLS

PHS

Audio Input

Buffer

Input

Buffer

NETWORK CONNECTIONS

Isolation

Opto-

Isolation

Opto-

Isolation

Opto-

Isolation

Opto-

Isolation

Power
Supply

Audio

Buffer

Logic Input

Buffer

Audio

Buffer

Loop

Ring &

Buffer

Switch Hook

Buffer

USER CONNECTIONS

VDD

AGND

VR

LC

VX

RVLC

SHK

Figure 1 - Functional Block Diagram

2-11

MH88400 Preliminary Information

VDD

AGND

LC

RVLC

SHK

VX
VR

1
2
3
4
5

6
78

14

TIP

13

RLS

12

PHS

11

TF

10

TXIN
RING

9

NC

Figure 2 - Pin Connections

Pin Description

Pin # Name Description

1VDDPositive Power Su pp ly Voltage. +5V.
2AGNDAnal og Ground. 4-Wire Ground. Norm all y conne cted to System Ground,
3LC

4

RVLC

Loop Control (Input). A logic low activates internal circuitry whi ch provides a dc
termination across Tip and Ring. Used for seizing the line and dial pulsing

Ring Voltage and Current Detect (Output). A logic low indicates that loop current is
detected. The loop current can be due to the external monitor phone or the MH88400 in
the off- hook mode. The RVLC outputs pulses when the external monit or phone is dial
pulsing or when the MH88400 is dial pulses via the LC input. In addition, when the
MH88400 is in the on-hook mode, a pulsing output indicates th at ringing voltag e is
across the Tip and Ring leads; the pulsing outputs frequency is twice the ringing
frequency.

5SHK

Switch Hook Detect (Output). This is an optional out put whi ch can be used with the
PHS input and an external phone. When loop current flows from PHS to TIP, SHK

goes

to logic low.

6VXTransmit (Output). 4-Wire ground(AGND) referenced audi o output, biased at 2.5V.

Outputs for both off-hook and on-hook.

7VRRecei ve (In pu t). 4-Wire ground (A GND) referenced audio input , biased at 2.5V. LC

must be activated low and loop current must be flowing.
8NCNo Connection . This pin is not connected internally
9 RING Ring Lead. Connects to the “Ring” lead of the central office through a relay contact. The

central office “Tip” and “Ring” leads may be interchanged

10 TXIN Transmit (Input). Connects to the “Ring” lead of the central offi ce through a coupling

capacitor.

11 TF Tip Feed. Connects to the “Tip” lead of the central office through an internal resistor and

an optional external resistor.

12 PHS Monitor Phone S ense (Inpu t). This is an optional inp ut which can be used with the

output and an external phone. When loop current flows from PHS to TIP, SHK goes

SHK

to logic low.

13 RLS Ring Loop Sense (Input). Sense node for ringing voltage detector and the loop current

detector.

14 TIP Tip Lead. Connects to the “Tip” lead of the central office through an optional relay

contact. The central office “Tip” and “Ring” leads may be interchanged.

2-12

Preliminary Information MH88400

Functional Description

The MH88400 Line Interface Circuit is a COIC
(Central Office Interface Circuit) used to interface
FAX’s Modems or user defined equipment to
Central Office 2-Wire Analog Trunks.

Opto-Isolation

The isolation barrier is designed to meet regulatory
requirements for a reinforced barrier of 3kVac. It
provides full isolation of mains voltages up to 250V
RMS and all telecom voltages. In order that this
barrier is not bypassed a creepage/clearance
distance of 6.4mm minimum must be maintained
between wiring, pcb tracking, etc., connected to
external circuitry on either side of the barrier. To
make this requirement simpler, pins on the
MH88400 connected to opposite sides of the
barrier are on opposite sides of the package.

External Protection Circuit

To meet regulatory high voltage requirement, an
external protection circuit is required. The
protection circuit shown in Figure 3 (Clamp Diode
D1) is recommended.

DC Loop Terminat ion

The DC loop termination c ircuitry provides the loop
with an active DC load termination when a logic low
is applied to the LC
termination is simpler to a resistance of
approximately 300Ω (loop current dependant).
Internal optically isolat ed circuitry is used to switch
the termination in and out the loop. This is used for
both seizing the line as well as generating dial
pulses.

(Loop Control) input. The

Supervision Features

The supervision circuitry is capable of detecting
ringing voltage and loop current as well as the
status of an optional external monitor phone. The
RVLC (Ring Voltage Loop Current Detect) output
provides a logic low when loop current due to the
external monitor phone or due to the MH88400
being in the off-hook mode is detected.

In addition, when the MH88400 is in the on-hook
mode, a pulsing out put indicates that ringing voltage
is across the tip and ring leads; the pulsing output
frequency is twice the ringing frequency. See
Figure 3.

Ringing frequency may require external validation.
An RC monostable is usually satisfactory for this
purpose or this may also be achieved using software
applications.

2-4 Wire Conversion

The 2-4 Wire conversion circuit converts the
balanced full duplex signal at Tip and Ring of the
central office line into a transmit ground referenced
signal at VX (Transmit) of the MH88400. It also
converts the receive ground referenced signal at VR
(Receive) of the MH88400 into a balanced transmit
signal at Tip and Ring of the central office line.

In full duplex transmission, the Tip-Ring signal
consists of an audio signal from the central office as
well as an audio signal due to the VR input.
Consequently, both of these signals will appear at the
VX output. The degree to which the 2-4 wire
conversion circuit minimizes the contribution of the
VR signal at the VX output is s pecified as transhybrid
loss (THL).

A simple THL cancellation circuit as shown in figure 7
can be used for certain applications to give the
required VX/VR signal separation. The MH88400 is
then suitable to drive a COMBO 2 CODEC or a VLSI
MODEM device.

Line Impedance

The MH88400 is suitable to drive a COMBO 2
CODEC or a VLSI modem device. The MH88400
provides a fixed Tip-Ring impedance which conforms
to the following PTT requirements.

MH88400-1 Zin = 200 + 820 // 115nF

Germany FTZ
MH88400-2 600Ω
MH88400-3 Zin = 370 + 620 // 310nF

UK BSI

The RVLC outputs pulses when the external
monitor phone is dial pulsing or when t he MH88400
is dial pulsing v ia the LC

mode.

2-13

MH88400 Preliminary Information

Absolute Maximum Ratings * - All voltages are with respect to AGND unless otherwise specified.

Parameter Symbol Min Max Units

1 DC Supply Voltage V
2 Storage Temperatu re T
3 DC Loop Vol tage V
4 Ringing Voltage V
5 Loop Current I

* Exceeding these values ma y cause perm anen t dama ge. Functi onal operati on und er these cond ition s is not implied.

DD

S

BAT

R

Loop

-0.3 6 V

-55 +80 °C

-100 +100 V

- 120 V

-90

Recommended Operating Conditions

Parameters Sym Min Typ

1 DC Supply Voltages V
2 Operating Tem peratu re T
3 Ringing Voltage V

‡ Typical figures are at 25°C with nominal +

5V supplies and are for design aid only.

DD

OP

4.5 5.0 5. 5 V
070°C

R

‡

Max Units Test Con di tio ns

75 V

RMS

V

=-48V

BAT

.

RMS

mA

Loop Electrical Characteristics*

‡

Characteristics Sym Min Typ

1 Ringing Volta ge No Detect

Detect

VR

27
2 Ringing Frequency 15 68 Hz
3 On-Hook 2-wire Impedance 40k Ω 1kHz
4 Operating Loop Current 10 80 mA
5 Operating Loop Resistance 4000 Ω V
6 Off-Hook DC -1 & -2 Variants

Resistance

-3 Variant

310
160

350
300
250

400
7 Leakage Current (2-Wire to AGND) 10 µA100V
8 Leakage Current on Hook

(Tip to Ring)

9 DC Resistance during dialling

200

-1 variant

10 Dial Pulse Distortion ON

0+4

Off

* Loop Electrical Characteristics are over recommended operating conditions unless otherwise stated.
‡ Ty p ical figures are at 25 °C and are for desi gn aid only.
Note: All of the above characteristi cs use a test circuit as per Figure 3.

Max Units Test Conditions

20 V

480
480
300
450

910µAV

RMS

V

RMS

Ω
Ω
Ω
Ω

Ω I

BAT

=20mA

I

Loop

=40mA

I

Loop

=40mA

I

Loop

=20mA

I

Loop

BAT

=20-40mA

Loop

220

ms

0+8+2

ms

=-48V, I

DC

=50V

Loop

=10mA

2-14

Preliminary Information MH88400

DC Electrical Characteristics

Characteristics Sym Min Typ

1

Supply Current I

†

‡

Max Units Test Co nditions

DD

15 mA VDD = 5.0V, I
2 Power Consumption PC 75 mW VDD = -5.0V,I
3 Low Level Output Voltage

RVLC
SHK

4 Low Level Input Voltage
5

High level Output Voltage

High level Input Voltage
High Level Input Current
Low Level Input Current

† DC Electrical Characteristics are over Recomme nded Opera ting Conditio ns unless otherwise st ated.
‡ Ty p ical figures are at 25°C with nominal+
Note: See figu re 3a and 3b.

5V supplies and are for design aid only.

V

OL

V

OH

V

V

I

IH

I

IL

3.8

IL

3.5

IH

0.4 V

0.9

0.6
1

mΑµAV

I

= 1.0mA

V

OL

= 1.0mA

I

OH

V

V

= 5.0V

IH

= 0.0V

V

IL

AC Electrical Characteristics† - MH88400 All Variants

Characteristi cs Sym Min Typ

1 Input Impedance VR 47 kΩ
2 Output Impedance at VX
3 Tr an sm it Gain (2-Wire to VX)

‡

Max Units Test Conditions

5 Ω

-0.4

dB Input 0.5V at 1kHz off-

hook

Loop

Loop

=40mA

=40mA

4 Frequency Response Gain

(relative to Gain @ 1kHz)

5 Receive Gain (VR to 2-wire)

-2.4

-3.0

dB
dB

dB Input 0.5V at 1kHz

3.5

6 Frequency Response Gain

(relative to Gain @ 1kHz)

0
0

dB
dB

7 Signal Output Overload Level

at 2-Wire

-3.0

0.0

+2.0

at Vx

-3.0

0.0

+2.0

8 Tot al Harmonic Distort ion

at 2-wire

at VX

9 Power Supply Reject Ratio

at 2-wire

at VX

† AC Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Ty p ical figures are at 25°C and are for design aid only.
Note 1: All of the above characteristics use a test circuit as per Figure 3.
Note 2: All of the above test conditions use a test source impedance which matches the device’s impedan ce.
Note 3: dBm is referenced to 600Ω un less othe rw is e s tated.
Note 4: THD is measured with a “ Wei gh t” fil ter.

THD

0.9

1.2

PSRR

35
10

dBm
dBm
dBm

dBm
dBm
dBm

%
%

dB
dB

300 Hz
3400 Hz

300 Hz
3400 Hz

THD <5% @ 1kHz
I

=10-40mA

Loop

VDD=4.5V
VDD=5.0V
VDD=5.5V

VDD=4.5V
VDD=5.0V
VDD=5.5V

Input 0.5V at 1kHz
DC loop = 1000Ω
VDD=5.0V

Ripple 0.1V,1kHz on
V

DD

2-15

MH88400 Preliminary Information

AC Electrical Characteristics† - MH88400-1

Characteristics Sym Min Typ‡Max Units Test Conditions

1 2-Wire inpu t Impedance

Zin 900 Ω @ 1kHz

(200Ω + 8 20 Ω //115nF)

2 Retu rn Loss at 2-Wire

(200Ω + 8 20 Ω //115nF)

3 Longit udi nal to Meta llic Balance 40

4 Idle Channel Noise

at 2-Wire

At VX

† AC Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only.
Note 1: All of the above characteristics use a test circuit as per Figure 3.
Note 2: All of the above test conditions use a test source impedance which matches the device’s impedance.
Note 3: dBm is reference d to 600Ω un les s o t he rw is e s tated.
Note 4: THD is measured with “Weight” filter.

RL 20

20
20

55
53

Nc

22
24
26

65
60
60

-84

-81

dB
dB
dB

dB
dB
dB

-78 dBmp
dBmp

300-500Hz
500-2500Hz
2500-3400Hz

50-300Hz
300-1000Hz
1000-4000Hz

AC Electrical Characteristics† - MH88400-2

‡

Characteristi cs Sym Min Typ

1 2-Wire Input Impedance -2 (600Ω)ZIn 600 Ω @ 1kHz

Max Units Test Conditions

2 Return Loss at 2-Wire

RL 20 24 dB 3 00-3400Hz

(Reference -2 =600Ω)
3 Longitudinal to Metallic Balance 50 60 dB 300-3400Hz
4 Idle Channel Noise

at 2-Wire

at VX

† AC Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only.

Nc

-84

-81

-78 dBrnp
dBrnp

AC Electrical Characteristics† - MH88400-3

‡

Characteristics Sym Min Typ

1 2-Wire In put I mpe dance

Zin 700 Ω @ 1kHz

(370Ω + 6 20 Ω // 310nF)

2 Retu rn Loss at 2-Wire

RL 18 20 dB 200-2400Hz

(370Ω + 6 20 Ω // 310nF)
3 Longit udi nal to Meta llic Balance 50 60 dB 300-3400Hz
4 Idle Channel Noise

at 2-Wire

at VX

Nc

-80

-80

Max Units Test Conditions

-70

-70

dBmp
dBmp

† AC Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only.
Note 1: All of the above characteristics use a test circuit as per Figure 3.
Note 2: All of the above test conditions use a test source impedance which matches the device’s impedance.
Note 3: dBm is reference d to 600Ω un les s o t he rw is e s tated.
Note 4: THD i s m e asured wit h “we ig ht ” fi lte r.

2-16

Preliminary Information MH88400

However, by adding external resistors to the VX
output, the Transmit Gain can be reduced as shown in
Figure 5. To limit the output current drawn, the
minimum recomm ended resista nce to ground is 2kΩ.

TIP-RING Drive Circuit

The audio input ground (AGND) referenced signal at
VR, biased at 2.5V, is converted to a balanced output
signal at Tip-Ring. 2-4 wire isolation is achieved
through optical isolation. The LC

input is activated,

low, and loop current must be flowing.

TIP-RING Receive Circuit

The differential audio signal at Tip-Ring is converted to

a ground (AGND) referenced si gnal, bia sed at 2. 5V, at
the VX output. 2-4 Wire isolation is achieved through a
combination of optical isolation and transformerler
isolation. The receive circuit operated with or without
loop current and LC can be either high or lo w. Signal
reception with no loop current can be used for on-hook
reception of, for example, caller identificatio n signals.

Overall Transmit Gain =

-0.4 dB + 20log (R4 / (R4 + R3))

The output impedance of the VX output is about 5Ω,
therefore, with two external 1kΩ resistors configured
as per Figure 5, this will result in 6dB of attenuation for
a total gai n of -6.4dB. Fo r correct gain, the MH88400
input impedance must match the line impe dance.

Receive G ain

Receive Gain (VR to Tip-Ring) is fixed as indicated in
“AC Electric al Characteristics”. However, by adding a
single external resistor in series with the VR input,
the Receive Gain can be reduced.

Overall Receive Gain =

3.5dB + 20log (47kΩ /(47kΩ + Rext),

The input impedance of the VR input is 47kΩ,
therefore, an external 100kΩ resistor in series with
this input will result in 9.9dB of attenuation for a total
gain of - 6. 4d B.

Tra n smit Ga in

Transmit Gain (Tip-Ring to VX) is fixed as indicat ed in
“AC Electrical Characteristics”.

14

13

TIP

D1

RING

NOTES:

Calls are set up and cleared in this mode by the
external contro ll er. It turns on the loop via Loop
Control, dialling by pulsing loop control (or via

DTMF tones) and clearing down by turning Loop
Control off.

R1

11

C2

10

9

For correct gain, the MH88400 input impedance
must match the line impedance.

TIP
RLS

TF

TXIN

MH8840 0

RVLC

VX

VR

6

7

4

Audio Output

Audio Input

Ring Voltage & Loop
Current Detect Output

3

RING

VDD

1

+5V

1) C1: 10µF, 6V Tantalum

2) C2: 0.1µF, 250V (Typical Value)

3) D1: 180VDC Foldback Diode, e.g. TISP4180, TISP5180

4) VX and VR are biased at 2.5V, therefo re, coupling capacit ors
may be required depending on application.

5) VX and VR are biased at 2.5V, therefore, coupling capacitors
may be required depending on application.

+

C1

LC

AGND

2

Loop Control Input

Figure 3 - Typical Applicati on Circuit

2-17

MH88400 Preliminary Information

14

TIP

13

RLS

10

11

TF

TXIN

9

TIP

D1

RING

Line
Relay
Input

NOTES:

C2 must be 0.1µF for correct operation. R2 & C2 form a dummy ringer, where R2 is on the hybrid and C2 must be fitted by
the customer. To inita te a manual call, lif t the hand set. The RVLC pin will indicate that the line as bee n seized by the
monitor phone . The require d num ber is th en dia lled an d the conne ct ions esta b lish ed . Durin g thi s phase the Loop Con trol
input should be turned ON to ensure that when the relay K1 is operated and the monitor phone removed from the line loop
current is still maintained. On receipt of the correct progress tones the external cont roller should control the data transmissio n
and clear down the call when it is compl et ed by turnin g the Loo p Control OFF. For applications in some countrie s such as
Germany the MH88422 can not be used with an optional telephone but may still be used in a combined telephone/fax machine.

K1

R1

R2

C2

MH88400

RVLC

RING

VDD

1

+5V

5) D1: 180VDC Foldback Diode, e.g. TISP4180, TISP5180

6) VX and VR are biased at 2.5V, t he ref ore, coup ling capa cito r s
may be required depending on application.

AGND

2

+

C1

6

VX

7

VR

4

3

LC

1) R1: 39Ω,1/2W,5%, current
limiting resistor for use in

Germany.

2) R2: 18kΩ

3) C1: 10µF, 6V Ta n tal um

4) C2: 0.47µF, 10 0V

Audio Output

Audio Input

Ring Voltage & Loop

Current Detect Output

Loop Control Input

Figure 4 - Typical Application Circuit wi th Dum m y Ringer and Mo nitor P ho ne

TIP

D1

RING

RECEIVE GAIN:

Audio input to Tip-Ring
=20log(R2/(R2+47K))+3.5dB
=6.5dB

TRANSMIT GAIN:
Tip-Ring to Audio Output
=20log(R4(R3+R4))-0.4dB
=-6.4dB

Note:
The VX output gain has been reduced by 6dB
(to -6.4dB) and the VR input gain has been
reduced by 10dB (to -6.5dB) in this example.

Figure 5 - Typical Application Circui t for Gai n Adjustm en t

R1

C2

14

13

11

10

R4

R3

VX

VR

LC

6

1K

7

R2
100K

4

3

RING

MH88 400

RVLC

VDD

1

+5V

1) R1: 39Ω,1/2W,5%,current limiting resistor for use in Germany

2) C1: 10µF, 6V Ta ntalum

3) C2: 0.1µF, 250V (Typi ca l Value)

4) D1: 180VDC Foldback Diode, e.g. TISP4180 , TISP518 0

5) VX and VR are biased at 2.5V, therefore, coupling capacitors

6) (R3+R4) should be > 2kΩ to prevent overload.

AGND

2

+

C1

may be required depending on application.

TIP

RLS

TF

TXIN

9

1K

Audio Output

Audio Input

Ring Voltage & Loop

Current Detect Outpu t

Loop Control Input

2-18

Preliminary Information MH88400

R4

1K

R3

VX

VR

LC

6

L1

C5

4.7m H

22nF

C3

7

0.1µ F

4

Ring Voltage & Loop

Current Detect Outpu t

3

Audio Output

Audio Input

Loop Control Input

TIP

RING

D1

Meter
Pulse

Detector

R1
1K

C2

10

14

13

RING

+5V

MH884 00

VDD

1

RVLC

AGND

2

+

C1

TIP

RLS

11

TF

TXIN

9

Note:

Meter pulses at high frequency (16kHz or 12kHz) and high
level (10V RMS) are used in some countries. The VX
amplifier ha s a low pass filt er whi ch atte nuate s by typical l y
15dB at 16kHz. If this proves insufficient for specific applications,
an LC notch is recommended. This should provide
a further 20dB of re jection at 16 of 12kHz with only 0 .5dB of loss
at 3.4kHz (aft er allowing for the overal l 6dB loss caused
by R3, R4).

Figure 6 - Typical Application Circui t with M eter Puls e Filter and Coup ling Ca paci tors

560pF

5%

68k

1%

-

A1

+

From

VR

10nF

5%

68k

1%

62k

1%

1) R1: 39Ω,1/2W,5%, current
limiting resistor for use in Germany.

2) C1: 10µF, 6V Tantalum

3) C2: 0.1µF, 250V

4) D1: 180VDC Foldback Di ode,
e.g. TISP4180, TISP5180.

5) L1: 4.7mH 5%, eg, Siemens B78108-S

6) C5: 22nF 5% for 16kHz 39nF for 1 2kHz

100k

1%

-

A1

VX Out

+

100k

From

VX

Note:

Amplifier A1 provid es a frequ ency equ iva lent to the VX path in the MH8840 0. This
provides the correct phase/amplitude response to enable cancellation to take place in
amplifier A2. Typical THL figures of 15-20dB can be achieved with the values and tolerances
shown. The VR input should be driven from a low impedance <

This circuit will function correctly for all variant s provided the terminat ion impeda nce of the
external line at the 2W connection is equal to the characteristics impedance of the MH88400.
If it is desired to operate with impedances differe nt from the MH884 00 imped ance s, the
frequency compensation networks around A1 must be filtered. Because of the wide variety
of impedances which are in typical use it is not possible to specify the required values.

100nF

100k

1%

600R.

Figure 7 -Transhybrid Loss (THL) Cancel la tion Circu it

10pF

100k

0V

2-19

MH88400 Preliminary Information

L1

TIP

C3

RING

Notes:

1) C1: 10µF, 6V Tanta lum

2) C2: 0.1µF, 250V

3) D1: 180VDC Foldback Diode, e.g. TISP4180, TISP5180

4) C3: 4.7nF; C4: 1.0nF Ceramic 10%

5) L1, L2: 1mH 5%, eg, Siemens B78108-S1105-J

D1

L2

C4

C2

14

13

11

10

VX

VR

LC

6

7

4

3

Audio Output

Audio Input

Ring Voltage & Loop

Current Detect Output

Loop Control Input

RING

MH88400

VDD
1

+5V

RVLC

AGND

2

+

C1

TIP

RLS

TF

TXIN

9

Figure 8 - Typical Application Circu it showi ng Nois e Filter Netwo rk for Outb and noise red uction

0.90 Typ

(22.9 Typ)

(1.3 Typ)

*0.05 Typ

0.12 Min 0. 20 Ma x
(3.0 Min 5.1 Max)

Notes:

1) Not to scale

2) Dimensions in inches).

3) (Dimensions in millimetres).
*Dim en si on s to ce nt re of pi n.

*0.11 Typ

(2.9 Typ)

1.50 Max

(38.0 Max)

0.20 ± 0.005
(0.5 ± 0.12)

1.05 Max

(26.7 Max)

0.35 Max
(8.9 Max)

*0.200 ± 0.005

(5.08 ± 0.12)

2-20

Figure 9 - Mechanical Data for 14 Pin DIL Hybrid