Datasheet NT91215B, NT91215C, NT91214D, NT91214B, NT91215D Datasheet (NOVATEK)

Features



One touch redial operation



Tone/Pulse switchable



32 digit capacit y f or r edial i ng



Automati c mixed redialing (last number redial) of pulse
to DTMF with multi ple automatic access pauses



PABX auto-pause is 2.2 seconds



DTMF Timing:
Manual dialing: minimum duration for bursts and
pauses
Redialing: calibr at ed ti ming



Hands-Free control function

General Description

NT91214/15 Series

Tone/Pulse Dialer



Wi de operating vol t age range: 2V to 5.5V



Key-in beep tone output



Digits dialed manually after redialing are cascadable
and stored as additional digits for the next redialing



Uses inexpensive ceramic resonator (3.58 MHz)



Two versions for different telephone systems



Built-in power up reset circuit



Four extra function keys: flash, pause, redial and DP

or

DTMF mixed dialing



4 x 4 (or 2 x 8) keyboard can be used



Low standby current

The NT91214/15 is a single-chip, silicon gate, CMOS
integrated circuit with an on-chip oscillator for a 3.58MHz
crystal or ceramic r esonator. It pr ovides a dialing pul se
(DP) or dual tone multi-frequency (DTMF) dialing. A
standard 4 x 4 mat rix keyboard can be used to support
either DP or DTMF modes.

Up to 32 digits can be saved in the on-chip RAM for
redialing. In the DTMF mode, a short minimum tone
duration and minimum intertone pause allows rapid
dialing. Maximum tone duration depends on the key
depression time during manual dialing.

Pin Configurations

a. 16-Pin Package b. 18-Pin Packages c. 20-Pin Package

(i) Key Tone Output (ii) Hands-Fr ee Cont r ol

1V1.0

Keyboard Assignments

NT91214/15 Series

123F1

456F2

789 P

*/T 0 # RD

C1 C2 C3

1. */T -- In PULSE mode this key works as Pulse → DTMF key (T key). In DTMF mode the key works as * key.
*/T key will occupy one memory digit in either use.

2. F1 -- Flash key. The break time is 297 ms or 96 ms (NT91214/15 respectively)

3. F2 -- Flash key for break time 640 ms

4. P -- Pause key (2.2 seconds)

5. RD -- One key redial key

6. # -- In PULSE mode this key input is neglected. In DTMF mode this key works as # key.

GND

R1

R2

R3

R4

Block Diagram

V1.02

NT91214/15 Series

Absolute Maximum Ratings*

Supply Voltage (VDD). . . . . . . . . . . . . . . . . . . .≤ 6.0V

IN

Input Voltage (V
Output Voltage (V

Output Vol tage (V
Tone Output Current (I
Power Dissipation (P

Operating Temperature (Top). . . . . . . -20°C to +70°C

Storage Temperature ( Tstg). . . . . . . - 40°C to +150°C

DC Electrical Characteristics

Parameter Symbol Min. Typ. Max. Unit Conditions

Operating Voltage VDD

Memory Retention Voltage V

Memory Retention Current I

) . . . . . . . VSS - 0. 3V t o VDD + 0. 3V

OUT

) . . . . VSS - 0.3 V to VDD + 0. 3 V

OUT

)(DP,

D

XMIT MUTE

TONE

) . . . . . . . . . . . . . . ≤50mA

) . . . . ≤1.2V

) . . . . . . . . . . . . . . . . . ≤500mW

(VDD = 3.5V, VSS = 0V, Fosc = 3. 579MHz, Top = 25°C)

2.0 5.5

2.0 5.5 TONE mode

MR

MR

1V -

0.05 0.4

*Comments

Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of
this device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied or intended. Exposure to the absolute
maximum rating conditions for extended periods may
affect device reliability.

Test
KT.

PULSE mode

V

HK

µ

VDD = 1.0V,

A

All outputs unl oaded

= VDD

A

-

DDP

Operating Current

I

I

DDT

Standby Current Iso

Input Current

V

V

R1

- R4 Input Current

Tone out Voltage

I

V

V

HFI

Pull Low Current

HFI



I

R

OC

OR

0.32 1.0
mA

0.6 2.0 Tone mode

0.03 0.05

µ

A

Pulse mode

HK

= VDD = 1.5V

All outputs A
unloaded

All outputs
unloaded,

A

no key

HK

0.5 10

IH

IL

0.8 1
VDD

00.2

115

584 730 876

µ

A

mVp-p

= VSS

Column

456 570 684 Row

VDD = 3.5V (Note 1)



5

µ

A

HFI

pin connected to 0V

selected

VDD = 3.5V D

L

R

= 5K

C

B

V1.03

DC Electrical Characteristics (continued)

NT91214/15 Series

Parameter Symbol Min. Typ. Max. Unit Conditions

HFO Dri v e Cur r ent

HFO, KT, MODEOUT

XMITMUTE

DP

Sink Current

Sink Current

OH1





I

OL1

I

OL2

I

0.4 2 mA

0.9 5.3 mA

1.1 5.3 mA VDD = 3.5V , V

VDD = 3.5V

OH =

VDD - 0.4V

V

VDD = 3.5V

OL =

V

0.4V

Distortion DIS% 1 5 % * see note below

* Note: DIS% =

1

1. V

. . . . Vn are the intermodulati on or t he harmonic frequencies in the 500Hz to 3400Hz band.

IL

and VIH are the individual frequency components of the DTMFsignal.

2. V

AC Characteristics

22 2

12 n

100*(V V ... V )

+++

22

IL IH

+

(V V )

(VDD = 3.5V, VSS = 0V, F

1/2

1/2

OSC

= 3.579MHz, Top = 25°C, unless otherwise specified.)

Parameter Symbol Min. Typ. Max. Unit Conditions

33.3

OL =

0.4V B

10pps

Test

KT.

B

B

M/B = 1/2

Make Time T

Break Time T

Inter-digit Pause Time T

Pause Time T

M

B

IDP

PAU

40.0

16.7

ms

20pps

M/B = 2/3

M/B = 1/2

20.0 M/B = 2/3

66.6

60.0

33.3

10pps

ms

20pps

M/B = 1/2

M/B = 2/3

M/B = 1/2

30.0 M/B = 2/3

824

ms

10pps

458 20pps

2.2 sec

4V1.0

AC Characteristics (co ntinued)

Parameter Symbol Min. Typ. Max. Unit Conditions

NT91214/15 Series

Auto-redial Break Tim e T

Delay time Key valid to Signal Out T

Key-in Debounce T

Key Release Debounce Tim e T

Key-in Tone Duration T

Key-in Tone Frequency F

Minimum Tone Duration Tim e T

Min. Tone Inter-digit Pause T

Redial Tone Duration T

Redial Tone Inter-digit Duration T

AOBK

D

KD

KLD

KTD

KT

MFD

TIDP

MFDR

TIDPR

2.2 sec * O ptional

0ms

21 ms

5.2 ms

23 ms

437 H

Z

94 ms

96 ms

94 ms

96 ms

Comparisons of Specified vs. Actual Tone Frequencies

R/C Spec. Actual Error (%) Unit Conditions

R1

R2

R3

R4

C1

C2

C3

697 699.1 +0.31 Hz

770 771.5 +0.19 Hz

852 852.3 +0.03 Hz

941 942.0 +0.10 Hz Fosc = 3.579MHz

1,209 1,215.7 +0.57 Hz

1,336 1,331.7 -0.32 Hz

1,477 1,471.9 -0.35 Hz

5V1.0

Pin Descrip t ions

NT91214/15 Series

Pin No.

NT91215A
NT91214A

3
4

2233MODE INI, ZTRI-STATE mode select pin

NT91215B

NT91214B

3
4

NT91215C
NT91214C

4
5

NT91215D
NT91214D

4
5

Designation I / O Description

OSCI

OSCO

I Oscillator Input and Output pins

The time base for the NT91214/15 is a
crystal controlled on-chip oscillator,
which is completed by connecting a

3.58MHz crystal or ceramic resonator
between the OSCI and OSCO pins.

There are two versions of the
NT91214/15 as follows:

a. NT91215 Series is for European and

American systems.

MODEINTone/

Pulse

VDD Pulse 10pps 2/3
VSS Tone - ­Floating Pulse 10pps 1/2

b. The NT91214 Series is for the

Japanese system.

MODEINTone/

Pulse

VDD Pulse 10pps 1/2

Dial

Rate

Dial

Rate

M/B

Ratio

M/B

Ratio

VSS Tone - ­Floating Pulse 20pps 1/2

The mode selection pin is checked for
tone/pulse dialing as each digit key
entery. In the PULSE mode, the dialing
rate is checked, along with the
make/break ratio, at first key entry.

6V1.0

Pin Descrip t ions (cont inued)

Pin No.

NT91214/15 Series

NT91215A
NT91214A

1122

(N.A.) 10 (N.A.) 11

9 111012

NT91215B

NT91214B

NT91215C
NT91214C

NT91215D
NT91214D

Designation I/O Description

HK

KT

DP

I Hook switch i nput

This inverter input pin detects the state
of the hook switch contact . "Off Hook" is
represented by a VSS
Hook" is represented by a VDD
condition.

O Key-in tone output

This N-channel open drain pin sends out
a "beep" tone for each PULSE mode key
entry, along with entries of accepted
function keys (RD, T, F1 F2, and P
keys). The tone output frequency is
437Hz and tone duration is 23 ms.

O Dial ing pulse output

This is an N-channel open drain output.
The normal output will be "ON" during
break and "OFF" during make in the
PULSE DIALING mode.

condition. "On

7V1.0

Pin Descrip t ions (cont inued)

Pin No.

NT91214/15 Series

NT91215A
NT91214A

(N.A.) (N.A.) Current

NT91215B

NT91214B

NT91215C
NT91214C

1 1 HFO O Hands-Free Control I/O pins

18 20

NT91215D
NT91214D

Designation I/O Description

These pins enable and disable the Hands­Free control function. W hen input pin

goes low, the Hands-Free Control state is
toggled on. The status of the Hands-Free
control state is l isted in the following table:

Hook

sw.

- Low

HFI

IOn

Hook

Off

Hook

On

Hook

HFI

HFI

HFI

Off

Hook

Next State

High Yes

Low No

Low Yes

Low Yes

State

HFO Input HFO Dialing?

High

High

-

HFI

Off

Hook

Off

Hook

7788TONEOTone dialing output

When a valid keypress is detected in the
DTMF mode, appropriate low group and
high group, frequencies are generated
which hybridizes the dual tone output.
TONE output is in the "OFF" state in
PULSE mode.

Low

High

On

Hook

On

Hook

Low No

High Yes

8V1.0

Pin Descrip t ions (cont inued)

Pin No.

NT91214/15 Series

NT91215A
NT91214A

8899

(N.A.) 9 (N.A.) 10 MODE OUT O Mode output pi n

13 15 14 16

14 16 15 17

15 17 16 18

16 18 17 19

10 12 11 13

NT91215B

NT91214B

NT91215C
NT91214C

NT91215D
NT91214D

Designation I/O Description

XMITMUTE

R1

R2

R3

R4

C1

O Dialing t r ansmission m ut e output

This is an N-channel open drain output

XMITMUTE

The
During pulse of DTMF dialing this
output is "ON".

This is an N-channel, open drain output
It is "ON" during t one output and "OFF"
during pulse output.

Keyboard pins
This input serves as the interface to an

XY matrix keyboard. On a 4 x 4 mat r ix
keyboard, the input from the fourth

column,
VSS.

C4

is normally "OFF"

, should be connected to

11 13 12 14

12 14 13 15

6677VDD

5566VSS

C2

C3

Power supply pins
These devices are designed to operate
from 2. 0V t o 5. 5V.

9V1.0

Operatin g Procedures

Symbol Defini t ions:

In the description below, signals are defined in terms of

NT91214/15 Series

the key or switch which is activated.
OFF Hook means the phone is off the hook.
On Hook means that the phone is on the hook.
D1 represents f or the f irst digit di al ed in a string of

digits.

Dn ( Dk ) represents for the last digit dialed in a

string of di gi t s .

Dn+1 represents for the beginning of a new str i ng of

digits.

Dn+m represents for t he last digi t in a new st r i ng of

digits.

HFI

↓

represents for the switch that activates the

HANDS-FREE DIALING mode going low

*/T is the Pulse-to-DTMF key

HFI

↓

b. On Hook
Pulse mode is defined as the INITIAL mode, provided
the key input D1 is not */T while the mode
selection pin is VDD or floating. The chip will pause for
824 ms automatically after it detects an Off Hook

condition or if the
proceeds with pulse or DTMF dialing if any keys have
been depressed.
The dialing rate or make/break ratio is decided at the
first key entry by checking the MODE IN status and

will

not be altered. The MODE IN status can only switch
the DIALING mode from PULSE to DTMF after the

first

key entry.

D1 . . . Dn

HFI

↓

key is depressed. It then

RD is the Redial key.
0 is the Zero key.
P is the Pause key.
F is the Flash key.

Recommended O per at ion:

1. PULSE mode operation
a. Off Hook D1 . . . Dn
PULSE mode is defined as the INITIAL mode,

provided

the first keyboard input i s not the */T key f oll owing
the Off Hook condition and the mode selection pin

is

floating ( MODE IN = VDD or floating).

2. DTMF mode operation

a. Off Hook D1 . . . Dn or On Hook

D1 . . . Dn

DTMF mode is defined as the INITIAL mode if the
mode selection pin MODE IN is VSS.

b. Off Hook */T D1 . . . Dn or On Hook

HFI

↓

The INITIAL mode is PULSE mode if the mode
selection pin, MODE IN, is VDD or floati ng. The */T
key can switch the DIALING mode to TONE m ode.
Unlike NORMAL mode switching, the */T key

entry,

*/T D1 . . . Dn

HFI

↓

10 V1.0

as the first key pressed, will not produce any pause
time. There are only 31 digits of redial memory
available in the buffer to be used for operations a
and b, since the mode switching key, */T , will
occupy one digit of space.

NT91214/15 Series

11 V1.0

3. Manual dialing wit h aut omatic access pause
a. Off Hook O P D1 . . . Dn

pause key entries can be accepted and stored in the
redial memor y. Each is stored as a digit.
Each key-in will provide a pause of 3.57 seconds,
depending on which model is being used.

4. Redial

HFI

a. On Hook RD or On Hook

Up to 32 digits (in PULSE mode) or 31 digits
(in TONE mode) can be dialed using the RD key.
The RD key is disabl ed while PULSE or TONE
signals are being transmitted. Redial will also be
inhibited if the last num ber dialed exceeds 32 digits

↓

RD

NT91214/15 Series

The mode selection pin is alwsys checked for TONE
or PULSE mode key entry. Dialing can be switched
from PULSE to TONE mode, but not from TONE to
PULSE mode. Switching the MODE IN pin to the
original di gits plus the digits dialed after pressing
cause the chip to store a */T digit prior to the first
tone digit in the redial memory and will automatically
insert a 2.2 second pause before the tone digits are
dialed out. After the mode bas been switched, the
status of the mode selection pin will no longer be
checked. Therefore, it will not be possible to switch
from TONE to PULSE mode.

will

because the redial memory can only hold 32 digi t s .

b. Off Hook RD D1 . . . Dn or On Hook

HFI

↓

After pressing the RD key, digits may be added to
the number in redial memory. When finished

dialing,

the redial memory will contain the original digits,
plus the digit s dial ed after pressing RD . Each ti m e
the redial key is pressed, the stored number will be
dialed exactly the same as it was previously,
regardless of the status of the MODE IN pin.

5. TONE/PULSE switching operation

a. On Hook D1 . . . Dn MODE IN pin

PULSE Mode

DTMF Mode

RD D1 . . . Dn

switched to VSS Dn +1 . . . Dn+m

b. Off Hook D1 . . . Dn */T Dn+1
PULSE Mode

. . . Dn+m

DTMF Mode
PULSE mode is initially defined with the mode
selection pin, MODE IN, equal to VDD or floating. At
this time, the mode can be switched to DTMF by
pressing the */T key. DTMF mode will being as soon
as the last pulse has been transmitted. In this m ode,
Dn+1 through Dn+m are sent through the TONE
OUT pin as DTMF signals. If a P key entry is
Contained in the series of digits before or after the */T
entry, or the MODE IN switch is depressed, 2.2

second
pause will be added to the automatically inserted

pause time, which is also 3.57 seconds. Both of the

12 V1.0

above switching modes can store as many as 31 digits

in the redial memory.

NT91214/15 Series

13 V1.0

NT91214/15 Series

6. One-key redialing

Off Hook D1 . . . Dn RD or On Hook
D1 . . . Dn RD
If the dialing of D1 t o Dn is finished, pr essing
RD will cause the pulse dialing pin to go low for 1.67
seconds of break time and an 824 ms pause will
automatically be added. If the pulses of the number
dialed with D1 to Dn have not finished, the
pressing of the redial key will be ignored.

7. Flash diali ng
Off Hook F D1 . . . Dn or On Hook

HFI

↓

F D1 . . . Dn

The flash keys emulate quick On-Off Hook operations.

HFI

break of 96 ms or 640 ms (or, 297 ms or 640 ms,

↓

depending on the model) on the

DP

output pi n. Then, it
pauses for 824 ms and continues dialing the digits,
D1 to Dn . Th ese d igi ts are th en stored in the redial
memory.

Each time the flash key is pressed, the redial memory
will

be cleared to store a new entry. In addition, the MODE
IN

status will be checked again for the setting of the
TONE/PULSE DI ALING mode.
Simil arly, to make sure that the IC is work ing properly,
new flash key inputs will be ignored as long as the digit s
that were dialed have not finished.

Pressing the flash keys, F1 or F2 , will cause a

Timi ng Waveforms

1. Timing Waveform in PULSE Mode:

HK or HFO

Key Input

KT

XMIT MUTE

DP

Td: Delay time of Key valid to dialing signal out , typically 0m s

IDP

: Inter-digit pause time

T

KTO

: Key-in tone duration

T

KD

: Debouncing ti me

T

HK

Note: "

" or "HFO" indicates chip works when hook switch "HK" goes low or Hands-Free control output HFO goes

high.

2 3

TKD: debouncing time 21 ms

T

(23 ms), f = 437Hz

KTD

T

d

T

M

1

T

IDP

T

M

T

M

T

B

21ms

14 V1.0

Timi ng Waveforms (cont inued)

2. Timing Waveform in TONE Mode:

(i) Normal Dialing

HK or HFO

NT91214/15 Series

Key Input

KT

XMIT MUTE

TONE

MODE OUT

(ii) After (i), Redialing

ÉÌ ðó ÉÇÐ

Ìæú Кпсцх

ÌÕ

ÙÎÊÕ ÎÖÕÆ

4 9

T

T

2.3ms

3

KD

d

ÓÅ

å

Õ

*

TMFD:94ms

2.5ms 2.3ms 2.3ms

T

:96ms

TIDP

ÎÇÅÓ

Õ

³¯¶îô

ÕÐÏÆ

ÎÐÅÆ ÐÖÕ

ХКЕСУ

Õ

15 V1.0

Timi ng Waveforms (cont inued)

3. Timing waveform for SWITCHING Mode Operation:

(i) By mode selection pin swit ches

HK or HFO

NT91214/15 Series

Key Input

MODE IN

KT

DP

MODE OUT

XMIT MUTE

TONE

(ii) By */T key entry

ÉÌ ðó ÉÇÐ

Ìæú Кпсцх

ÎÐÅÆ ÊÏ

ÌÕ

ÅÑ

2 4

T

M

T

d

3

**** ***********************

T

IDPTIDP

³ µ

´

*/T

6

T

M

T

T

IDP

IDP

T

PAUTMFD

«°Õ

·

««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««

«

ÎÐÅÆ ÐÖÕ

ÙÎÊÕ ÎÖÕÆ

ÕÐÏÆ

PAU

T

: Pause time (2.2 secs)

Î

Õ

å

Õ

ÊÅÑÕÊÅÑ

Õ

Î

Õ

ÊÅÑ

Õ

ÑÂÖÕÎÇÅ

Õ

³¯¶îô³¯¶îô

16 V1.0

Timi ng Waveforms(cont inued)

4. One Key Redial (DTMF mode used as example):

HK or HFO

NT91214/15 Series

Key Input

XMIT MUTE

TONE

MODE OUT

AOBK

T

: Break time (2.2 secs)

DP

2

T

d

3

2.5ms

5. Flash Diali ng ( DTMF mode used as exampl e):

HK or HFO

Key Input

XMIT MUTE

DP

MODE OUT

//
//

//

//

//

F

T

fsh

64 3

T

PAU

RD

T

AOBK

2.5ms

T

d

2.5ms

2.5ms

TONE

//

Tfsh: flash t i me 96 or 640 ms (F1 or F2 respectively) for NT91215

flash time 297 or 640 ms (F1 or F2 respectively) for NT91214

17 V1.0

NT91214/15 Series

Æ

Application Circuit

ÕÊÑ

ÓÊÏÈ

ÛÏÓ ³³±×

(for reference only)

ÐÏ ÉÐÐÌ

ÐÇÇ ÉÐÐÌ

´ Dz³²

· dz¶µ

Ó²

Ó³

²±±Ì

³¸±Ì

ÉDZ

ÉÐÐÌ ФШКХДЙ

³³Î

²±±Ì

ÐÏ ÉÐÐÌ

ÐÇÇ ÉÐÐÌ

ЙВПЕФ ÇÓÆÆ

ÉDz

ÕÐÏÆ

²Ì³

¹±¶±

ЧРКДЖ

ПЖХШРУМ

º³

µ¸ôÇ

µ¸±Ì

³³±Ì

²Ì

¬

®

±¯µ¸ôÇ

´¯º×

¬

®

¹±¶±

³±±µÇ

³Î

µ¸±Ì

±¯²µÇ

ÉÌ ×ÅÅ

±¯µ¸µÇ

º³

²±±Ì

²±±Ì

²±Ì

²±±Ì

ÅÑ

µ³

º ѹ¸

¤ Ó±«

Ó´

Óµ

Ĵ ij IJ

ÏÕº²³²µ°²¶

ÐÔIJ ÐÔı ×ÔÔ

³±Ñ ³±Ñ

´¯¶¹ ÎÉû

ДЖУВОКД

УЖФРПВХРУ

СЦНФЖ

ÕÐÏÆ

ÎÐÅÆ ÊÏ

×ÅÅ

ΰà ¾ ³°´

ΰà ¾ ²°³

ÎÐÅÆ ÐÖÕ

×ÅÅ

²±±

ÙÎÊÕ ÎÖÕÆ

ÍÆÅ

ÌÕ

²±±Ì

²±±Ì ±¯±³µÇ

×ÅÅ

¹±¶±

СКЖЫР

ВОСНКЗКЖУ

ПЖХШРУМ

ÔÑ

18 V1.0

Test Circuits

(A) (B)

(C) (D)

NT91214/15 Series

OSCILLO SCOPE: TEKTRONI X 468
SPECTURM ANALYZER: HP3585A

19 V1.0

Ordering Information

NT91214/15 Series

Part No. Key Tone Hands-Free Dial Rate M/B Ratio

Control

NT91214A N.A. N.A. 16L DIP

NT91214B A N.A.

NT91214C N.A. A 18L DIP

NT91214D A A 20L DIP

NT91215A N.A. N.A. 16L DIP

NT91215B A N.A.

NT91215C N.A. A

NT91215D A A 20L DIP

10/20pps 1/2 297 ms 640 m s

10pps 1/2 96 ms 640 ms

2/3 selectable

Flash

F1 F2

Package

18L DIP

18L DIP

18L DIP

20 V1.0

Package Information

NT91214/15 Series

DIP 16L Outline Dimensions

16

1

E

18

S

2

AL

A

D

9

1

A

B

B

1

e

1

Base Plane

Seating Plane

α

Symbol Dimensions in inches Dimensions in mm

A 0.175 Max. 4.45 Max.

A

1

A

2

0.010 Min. 0.25 Min.

0.130±0.010 3.30±0.25

B 0.018 +0.004 0.46 +0.10

-0.002 -0.05

unit: inches/mm

E

C

e

A

B

1

0.060 +0.004 1.52 +0.10

-0.002 -0.05

C 0.010 +0.004 0.25 +0.10

-0.002 -0.05

D 0.750 Typ. (0.770 Max.) 19.05 Typ. (19.56 Max.)

E 0.300±0.010 7.62±0.25

E

1

e

1

0.250 Typ. (0.262 Max.) 6.35 Typ. (6.65 Max.)

0.100±0.010 2.54±0.25

L 0.130±0.010 3.30±0.25

α

e

A

0° ~ 15

°

0.345±0.035 8.76±0.89

0° ~ 15

°

S 0.040 Max. 1.02 Max.

Notes:

1. The m aximum value of dimension D includes end flash.

2. Di mension E

1

does not include resin fins.

3. Di mension S includes end flash.

21 V1.0

Package Information

NT91214/15 Series

DIP 18L Outline Dimensions

1

E

19

S

2

AL

A

B

B

D

1018

1

A

e

1

1

Base Plane

Seating Plane

α

Symbol Dimensions in inche s Dimension in mm

A 0.175 Max. 4.45 Max.

A

1

A

2

0.010 Min. 0.25 Min.

0.130±0.010 3.30±0.25

B 0.018 +0.004 0.46 +0.10

-0.002 -0.05

E

A

e

unit: inches/mm

C

B

1

0.060 +0.004 1.52 +0.10

-0.002 -0.05

C 0.010 +0.004 0.25 +0.10

-0.002 -0.05

D 0.900 Typ. (0.920 Max.) 22.86 Typ. (23.37 Max.)

E 0.300±0.010 7.62±0.25

E

1

e

1

0.250 Typ. (0.262 Max.) 6.35 Typ. (6.65 Max.)

0.100±0.010 2.54±0.25

L 0.130±0.010 3.30±0.25

α

e

A

0° ~ 15

°

0.345±0.035 8.76±0.89

0° ~ 15

°

S 0.055 Max. 1.40 Max.

Notes:

1. The m aximum value of dimension D includes end flash.

2. Di mension E

1

does not include resin fins.

3. Di mension S includes end flash.

22 V1.0

Package Information

NT91214/15 Series

DIP 20L Outline Dimensions

1

E

110

S

2

AL

A

B

B

D

1120

1

A

e

1

1

Base Plane

Seating Plane

α

Symbol Dimensions in inches Dimensions in mm

A 0.175 Max. 4.45 Max.

A

1

A

2

0.010 Min. 0.25 Min.

0.130±0.010 3.30±0.25

B 0.018 +0.004 0.46 +0.10

-0.002 -0.05

E

A

e

unit: inches/mm

C

B

1

0.060 +0.004 1.52 +0.10

-0.002 -0.05

C 0.010 +0.004 0.25 +0.10

-0.002 -0.05

D 1.026 Typ. (1.046 Max.) 26.06 Typ. (26.57 Max.)

E 0.300±0.010 7.62±0.25

E

1

e

1

0.250 Typ. (0.262 Max.) 6.35 Typ. (6.65 Max.)

0.100±0.010 2.54±0.25

L 0.130±0.010 3.30±0.25

α

e

A

0° ~ 15

°

0.345±0.035 8.76±0.89

0° ~ 15

°

S 0.078 Max. 1.98 Max.

Notes:

1. The m aximum value of dimension D includes end flash.

2. Di mension E

1

does not include resin fins.

3. Di mension S includes end flash.

23 V1.0