Motorola MC14C89ABP, MC14C89BP, MC14C89ABD Datasheet

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The MC14C89B and MC14C89AB are low monolithic quad line receivers
using bipolar technology, which conform to the EIA–232–E, EIA–562 and
CCITT V.28 Recommendations. The outputs feature LSTTL and CMOS
compatibility for easy interface to +5.0 V digital systems. Internal
time–domain filtering eliminates the need for external filter capacitors in most
cases.

The MC14C89B has an input hysteresis of 0.35 V , while the MC14C89AB
hysteresis is 0.95 V. The response control pins allow adjustment of the
threshold level if desired. Additionally, an external capacitor may be added
for additional noise filtering.

The MC14C89B and MC14C89AB are available in both a 14 pin
dual–in–line plastic DIP and SOIC package.

Features:

• Low Power Consumption

• Meets EIA–232–E, EIA–562, and CCITT V.28 Recommendations

• TTL/CMOS Compatible Outputs

• Standard Power Supply: + 5.0 V ±10%

• Pin Equivalent to MC1489, MC1489A, TI’s SN75C189/A, SN75189/A

and National Semiconductor’s DS14C89/A

• External Filtering Not Required in Most Cases

• Threshold Level Externally Adjustable

• Hysteresis: 0.35 V for MC14C89B, 0.95 V for MC14C89AB

• Available in Plastic DIP, and Surface Mount Packaging

• Operating Ambient Temperature: –40° to +85°C

QUAD LOW POWER

LINE RECEIVERS

SEMICONDUCTOR

TECHNICAL DATA

P SUFFIX

PLASTIC PACKAGE

CASE 646

D SUFFIX

PLASTIC PACKAGE

CASE 751A

(SO–14)

PIN CONNECTIONS

Representative Block Diagram

(Each Receiver)

Input

Response

Control

MOTOROLA ANALOG IC DEVICE DATA

1

Input A

Response

Control A

Output A

Response

Control B

Output B

V

CC

Output

Ground

Device

MC14C89BP
MC14C89ABP Plastic DIP
MC14C89ABD SO–14

 Motorola, Inc. 1996 Rev 0

2

3

4

Input B

5

6

7

(Top View)

ORDERING INFORMATION

Operating

Temperature Range

TA = – 40° to +85°C

14

13

12

11

10

9

8

V

CC

Input D
Response

Control D
Output D

Input C
Response

Control C
Output C

Package

Plastic DIP

1

MC14C89B, AB

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Voltage

V

CC(max)

V

CC(min)

Input Voltage V
Output Load Current I
Junction Temperature T

Devices should not be operated at these limits. The “Recommended Operating Conditions” table provides
for actual device operation.

V

CC

in

O

J

+ 7.0
– 0.5

± 30 Vdc

Self–Limiting –

–65, +150 °C

RECOMMENDED OPERATING CONDITIONS

Characteristic Symbol Min Typ Max Unit

Power Supply Voltage V
Input Voltage V
Output Current Capability I
Operating Ambient Temperature T

All limits are not necessarily functional concurrently.

CC

in

O

A

Vdc

4.5 5.0 5.5 Vdc

–25 – 25 Vdc

–7.5 – 6.0 mA

–40 – 85 °C

ELECTRICAL CHARACTERISTICS (–40°C

Characteristic

Supply Current (I
ICC @ +4.5 V  VCC  +5.5 V

Output Voltage – High, Vin  0.4 V (See Figures 2 and 3)

I

= –20 µAVCC = 4.5 V

out

I

= –3.2 mA VCC = 4.5 V

out

Output Voltage – Low, Vin  2.4 V

I

= 3.2 mA VCC = 4.5 V

out

Output Short Circuit Current** (VCC = 5.5 V, see Figure 4)

Normally High Output shorted to ground
Normally Low Output shorted to V

Input Threshold Voltage (VCC = 5.0 V)

(MC14C89AB, see Figure 5) Low Level

(MC14C89B, see Figure 6)

Input Impedance (+4.5 V  VCC  +5.5 V –25 V  Vin  +25 V) 3.0 5.5 7.0 kΩ

* * Typicals reflect performance @ TA = 25°C

**Only one output shorted at a time, for not more than 1.0 seconds.

TIMING CHARACTERISTICS (T

Output Transition Time (10% to 90%)

4.5 V  VCC  5.5 V

Propagation Delay Time

4.5 V  VCC  5.5 V

Input Noise Rejection (see Figure 9) 1.0 1.5 – µs

Output Low–to–High
Output High–to–Low

out = 0

)

VCC = 5.5 V

VCC = 5.5 V

VCC = 5.5 V

High Level

Low Level
High Level

A

Characteristic

CC

= +25°C, unless otherwise noted.)



TA  +85°C, unless otherwise noted.)*

Symbol Min Typ Max Unit

I

CC

V

OH

V

OL

I

OS

V

IL

V

IH

V

IL

V

IH

Symbol Min Typ Max Unit

t

T

t

PLH

t

PHL

– 330 700

3.5

3.5

2.5

2.5

–
–

–35

–

0.75

1.6

0.75

1.0

– 0.08 0.30 µs

–
–

3.8

4.8

3.7

4.7

0.1

0.1

–13.9
+10.3

0.95

1.90

0.95

1.3

3.35

2.55

–
–
–
–

0.4

0.4

–

35

1.25

2.25

1.25

1.5

6.0

6.0

µA

Vdc

mA

Vdc

µs

2

MOTOROLA ANALOG IC DEVICE DATA

S.G.

MC14C89B, AB

Figure 1. Timing Diagram

3.0 V

1.5 V

V

CC

S.G.

NOTES: S.G. set to: f = 20 kHz;

50 pF

RC
(Open)

Duty Cycle = 50%;
tr, tf p 5.0 ns

V

out

0 V

V

out

t

PHL

t

PLH

90%

50%

10%

t

T

50%

t

T

STANDARDS COMPLIANCE

The MC14C89B and MC14C89AB are designed to comply
with EIA–232–E (formerly RS–232), the newer EIA–562
(which is a higher speed version of the EIA–232), and CCITT
V.28 Recommendations. EIA–562 was written around
modern integrated circuit technology, whereas EIA–232

electro–mechanical circuitry in use at the time of its creation.
Yet the user will find enough similarities to allow a certain
amount of compatibility among equipment built to the two
standards. Following is a summary of the key specifications
relating to the systems and the receivers.

retains many of the specifications written around the

Parameter EIA–232–E EIA–562

Max Data Rate 20 kBaud 38.4 kBaud Asynchronous

Max Cable Length 50 feet Based on cable capacitance/data rate
Transition Region –3.0 V to +3.0 V –3.0 V to +3.0 V
MARK (one, off) More negative than –3.0 V More negative than –3.3 V
SPACE (zero, on) More positive than +3.0 V More positive than +3.3 V
Fail Safe Output = Binary 1 Output = Binary 1
Open Circuit Input Voltage
Slew Rate (at the driver)

Loaded Output Voltage (at the driver) 5.0 V p VOp 15 V for loads between

t

2.0V Not Specified

p

30 V/µs anywhere on the waveform

3.0 kΩ and 7.0 kΩ

64 kBaud Synchronous

p

30 V/µs anywhere on the waveform,

q

4.0 V/µs between +3.0 V and –3.0 V

VO q 3.7 V for a load of 3.0 kΩ

V

V

OH

OL

Figure 2. T ypical Output versus Supply Voltage Figure 3. T ypical Output Voltage versus Temperature

, OUTPUT VOL TAGE (V)

O

V

5.0

4.0

3.0

2.0

1.0

0

4.5

VOH(I

= –20 µA)

out

VOH(I

= –3.2 mA)

out

VOL(I

= 3.2 mA)

out

VCC, SUPPLY VOLTAGE (V)

MC14C89AB
MC14C89B

°

C

TA = 25

5.55.35.14.94.7

, OUTPUT VOL TAGE (V)

O

V

5.0

4.0

3.0

2.0

1.0

0

–40

VOH(I

= –20 µA)

out

VOH(I

= –3.2 mA)

out

VOL(I

= 3.2 mA)

out

25

TA, AMBIENT TEMPERATURE (

MC14C89AB
MC14C89B
VCC = 5 V

57.5–7.5 85

°

C)

MOTOROLA ANALOG IC DEVICE DATA

3

MC14C89B, AB

15

10

5.0

–5.0

SHORT CIRCUIT CURRENT (mA)

–10

–15

2.0

1.8

1.6

1.4

1.2

Figure 4. Typical Short Circuit Current

versus T emperature

2.0

Normally Low Output Shorted to V

0

Normally High Output Shorted to Ground

TA, AMBIENT TEMPERATURE (

CC

MC14C89AB
MC14C89B
VCC = 5.5 V

°

C)

8557.525–7.5–40

1.8

1.6

1.4

1.2

1.0

INPUT THRESHOLD VOLTAGE (Vdc)

0.8

Figure 6. T ypical Threshold Voltage

versus T emperature

MC14C89B

t

VCC t 5.5 V

4.5 V

V

IH

5.0

4.0

3.0

2.0

Figure 5. T ypical Threshold Voltage

versus T emperature

V

IH

MC14C89AB

t

VCC t 5.5 V

4.5 V

V

IL

–7.5–40

TA, AMBIENT TEMPERATURE (

25

°

C)

Figure 7. T ypical Effect of Response

Control Pin Bias

VIL @ V

bat

VIL @ V

= –10 V

= –3.0 V

bat

8557.5

RC
R

RC

+

V

bat

–

1.0

INPUT THRESHOLD VOLTAGE (Vdc)

0.8

V

IL

TA, AMBIENT TEMPERATURE (

5.0

4.5

4.0

3.5

3.0

, PULSE AMPLITUDE (V)E

in

2.5

2.0

1.0

INPUT THRESHOLD VOLTAGE (Vdc)

8557.525–7.5–40

°

C)

0

Nominal V

0

10 k

Figure 8. T ypical Noise Pulse Rejection

MC14C89AB
MC14C89B
Pulse Rate = 300 kHz
RC Pin Open

Noise Pulse Rejection

1.61.4

1.8
PW, INPUT PULSE WIDTH (

µ

s)

IL

Ω

Ω

20 k

BIAS RESISTANCE (RRC)

2.82.62.42.22.0

4.5 V t VCC t 5.5 V

30 k

Ω

40 k

Ω

50 k

Ω

4

MOTOROLA ANALOG IC DEVICE DATA

MC14C89B, AB

APPLICATIONS INFORMATION

Description

The MC14C89AB and MC14C89B are designed to be
direct replacements for the MC1489A and MC1489. Both
devices meet all EIA–232 specifications and also the faster
EIA–562 and CCITT V.28 specifications. Noise pulse
rejection circuitry eliminates the need for most response
control filter capacitors but does not exclude the possibility as
filtering is still possible at the Response Control (RC) pins.
Also, the Response Control pins allow for a user defined
selection of the threshold voltages. The MC14C89AB and
MC14C89B are manufactured with a bipolar technology
using low power techniques and consume at most 700 mA,
plus load currents with a +5.0 V supply .

Outputs

The output low or high voltage depends on the state of the
inputs, the load current, the bias of the Response Control
pins, and the supply voltage. T able 1 applies to each receiver ,
regardless of how many other receivers within the package
are supplying load current.

T able 1. Function Table

Receivers

Input* Output*

H

L

*The asterisk denotes A, B, C, or D.

Receiver Inputs and Response Control

The receiver inputs determine the state of the outputs in
accordance with Table 1. The nominal VIL and V
thresholds are 0.95 V and 1.90 V respectively for the
MC14C89AB. For the MC14C89B, the nominal VIL and V
thresholds are 0.95 and 1.30, respectively. The inputs are
able to withstand ± 30 V referenced to ground. Should the
input voltage exceed ground by more than ±30 V , excessive
currents will flow at the input pin. Open input pins will
generate a logic high output, but good design practices
dictate that inputs should never be left open.

The Response Control (RC) pins are coupled to the inputs
through a resistor string. The RC pins provide for adjustment
of the threshold voltages of the IC while preserving the
amount of hysteresis. Figure 10 shows a typical application
to adjust the threshold voltages. The RC pins also provide
access to an internal resistor string which permits low pass
filtering of the input signal within the IC. Like the input pins,
the RC pins should not be taken above or below ground by
more than ±30 V or excessive currents will flow at these pins.
The dependence of the low level threshold voltage (VIL) upon
RRC and V

VIL]

ȡ
ȧ

ȧ

can be described by the following equation:

bat

V

*

V

NJ

0.09

5.32 kW)
505

ƪ

bat

RRC(1.6))2.02 k

6.67 106W
R

RC

W

Ȣ

VIH can be found by calculating for VIL using equation (1)

then adding the hysteresis for each device (0.35 for the

L

H

IH
IH

505

W

2

ȣ
ȧ

ȧ

(1)

ƫ

Nj

W

Ȥ

MC14C89B or 0.95 V for the MC14C89AB). Figure 7 plots
equation (1) for two values of V

If an RC pin is to be used for low pass filtering, the

capacitor chosen can be calculated by the equation,

CRC]

where f
of the low pass filter.

Another feature of the MC14C89AB and MC14C89B is
input noise rejection. The inputs have the ability to ignore
pulses which exceed the VIH and VIL thresholds but are less
than 1.0 ms in duration. As the duration of the pulse exceeds

1.0 ms, the noise pulse may still be ignored depending on its
amplitude. Figure 8 is a graph showing typical input noise
rejection as a function of pulse amplitude and pulse duration.
Figure 8 reflects data taken for an input with an unconnected
RC pin and applied to the MC14C89AB and MC14C89B.

Operating Temperature Range

The ambient operating temperature range is listed as
–40°C to +85°C, and the devices are designed to meet the
EIA–232–E, EIA–562 and CCITT V.28 specifications over
this temperature range. The timing characteristics are
guaranteed to meet the specifications at +25°C. The
maximum ambient operating temperature is listed as +85°C.
However, a lower ambient may be required depending on
system use (i.e., specifically how many receivers within a
package are used), and at what current levels they are
operating. The maximum power which may be dissipated
within the package is determined by:

where: R

where: VCC =

VOH, VOL =

As indicated, the first term (in brackets) must be calculated
and summed for each of the four receivers, while the last
term is common to the entire package.

represents the desired –3 dB role–off frequency

–3dB

Figure 9. Application to Adjust Thresholds

θJA

T

J(max)

TA =

PD =

ICC =

2.02 kW2pf

Input Pin

P

D

thermal resistance (typ., 100°C/W for the

=

DIP and 125°C/W for the SOIC packages);
maximum operating junction temperature

=

(150°C); and
ambient temperature.
{[(VCC – VOH)IOH] or
[(VOL)IOL]}

positive supply voltage;
measured or estimated from Figure 2
and 3;
measured quiescent supply current.

(max)

+

and a range of RRC.

bat

1

*

3dB

Response Control Pin

R

RC

+

V

bat

–

T

J(max)–TA

R

q

JA

each receiver +

(VCC

(2)

ICC)

MOTOROLA ANALOG IC DEVICE DATA

5

–T–

SEATING
PLANE

MC14C89B, AB

OUTLINE DIMENSIONS

P SUFFIX

PLASTIC PACKAGE

CASE 646–06

ISSUE L

14 8

B

17

A

F

N

SEATING

HG D

PLANE

–A–

14 8

–B–

P 7 PL

71

G

C

D 14 PL

0.25 (0.010) A

K

M

S

B

T

C

K

L

J

M

D SUFFIX

PLASTIC PACKAGE

CASE 751A–03

(SO–14)

ISSUE F

R X 45

M

_

0.25 (0.010) B

M

S

NOTES:

1. LEADS WITHIN 0.13 (0.005) RADIUS OF TRUE
POSITION AT SEATING PLANE AT MAXIMUM
MATERIAL CONDITION.

2. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.

3. DIMENSION B DOES NOT INCLUDE MOLD
FLASH.

4. ROUNDED CORNERS OPTIONAL.

DIM MIN MAX MIN MAX

A 0.715 0.770 18.16 19.56
B 0.240 0.260 6.10 6.60
C 0.145 0.185 3.69 4.69
D 0.015 0.021 0.38 0.53
F 0.040 0.070 1.02 1.78
G 0.100 BSC 2.54 BSC
H 0.052 0.095 1.32 2.41
J 0.008 0.015 0.20 0.38
K 0.115 0.135 2.92 3.43
L 0.300 BSC 7.62 BSC
M 0 10 0 10

____

N 0.015 0.039 0.39 1.01

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR

M

F

J

PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

DIM MIN MAX MIN MAX

A 8.55 8.75 0.337 0.344
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7

____

P 5.80 6.20 0.228 0.244
R 0.25 0.50 0.010 0.019

MILLIMETERSINCHES

INCHESMILLIMETERS

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
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Opportunity/Affirmative Action Employer.

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6

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MOTOROLA ANALOG IC DEVICE DATA

MC14C89B/D

*MC14C89B/D*