Datasheet MC26C31D, MC26C31P Datasheet (Motorola)

MC26C31MOTOROLA

1

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CMOS

The MC26C31 is a quad differential line driver designed for digital data
transmission over balanced lines. The MC26C31 meets all the requirements of
standard EIA–422–A while retaining the low–power characteristics of CMOS.

The MC26C31 accepts TTL or CMOS input levels and translates these to
EIA–422–A output level. This part uses special output circuitry that enables the
individual drivers to power down without loading down the bus. The MC26C31
also includes special circuitry which will set the outputs to a high impedance
mode during power up or down, preventing spurious glitches. This device has
enable and disable circuitry common for all four drivers.

The MC26C31 is pin compatible with the AM26LS31.

All pins are protected against damage due to electrostatic discharges.

• Maximum Supply Current: 3 mA

• 2000 V ESD Protection on the Inputs and Outputs

• TTL/CMOS Input Compatible

• Typical Propagation Delay: 6 ns

• Typical Output Skew: 1 ns

• Meets VO = 6.0 V (and VO = 0.25 V), VCC = 0 V, IO < 100 µA Requirement

• Meets the Requirements of Standard EIA–422–A

• Operation from Single 5 V Supply

• High Impedance Mode for Outputs Connected to System Buses

BLOCK DIAGRAM

ENBENB

INPUT D INPUT C INPUT B INPUT A

OUTPUTD2OUTPUTD1OUTPUTC2OUTPUTC1OUTPUTB2OUTPUTB1OUTPUTA2OUTPUT

A1

V

CC

GND

12 4

15 9 7 1

8 16 14 13 10 11 6 5 2 3

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

Order this document

by MC26C31/D



SEMICONDUCTOR TECHNICAL DATA



P SUFFIX

PLASTIC DIP

CASE 648

D SUFFIX

SOG PACKAGE

CASE 751B

ORDERING INFORMATION

MC26C31P Plastic DIP
MC26C31D SOG Package

16

1

16

1

 Motorola, Inc. 1995

REV 3
1993

MC26C31 MOTOROLA
2

TRUTH TABLE

Control Inputs E/E Input

Non–Inverting

Output

Inverting

Output

L/H X Z Z

All other combinations of

H H L

enable inputs

L L H

X = Don’t Care H = High Logic State
Z = High Impedance L = Low Logic State

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Voltage V

CC

7 V

DC Input Voltage V

in

– 1.5 to VCC + 1.5 V

DC Output Voltage* V

out

– 0.5 to VCC + 0.5 V

DC Output Current, per Pin I

out

150 mA

DC VCC or GND Current, per Pin I

DD

150 mA

Storage Temperature T

stg

– 65 to + 150 °C

Power Dissipation P

D

500 mW

ESD (Human Body Model) 2000 V

*Power–on conditions.

OPERATING CONDITIONS

Rating Symbol Min Max Unit

Power Supply Voltage V

CC

4.5 5.5 V

DC Input Voltage V

in

0 V

CC

V

Operating Temperature Range T

A

– 40 + 85 °C

Input Rise and Fall Time tr, t

f

— 500 ns

DC CHARACTERISTICS (V

CC

= 4.5 to 5.5 V, TA = – 40 to + 85°C, unless otherwise stated)

Parameter

Symbol Min Typ Max Unit

Input Voltage (Low Logic State) V

IL

— — 0.8 V

Input Voltage (High Logic State) V

IH

2.0 — — V

Output Voltage (Low Logic State) I

sink

= 20 mA V

OL

— 0.3 0.5 V

Output Voltage (High Logic State) I

source

= 20 mA V

OH

2.5 2.8 — V

Output Differential Voltage RL = 100 Ω (Note 1) V

OD

2.0 — — V
Output Differential Voltage Difference RL = 100 Ω (Note 1) D(VOD) — — ± 0.4 V
Output Offset Voltage RL = 100 Ω (Note 1) V

OS

— — 3.0 V
Output Offset Voltage Difference RL = 100 Ω (Note 1) D(VOS) — — ± 0.4 V
Input Current VIH = VCC, GND, VIH or V

IL

I

in

— — ± 1.0 µA
Quiescent Supply Current I

out

= 0 µA I

CC

— — 3.0 mA
Output Short Circuit Current (Note 2) I

OS

– 30 – 100 – 150 mA

Output Leakage Current (High–Z State) V

out

= VCC or GND I

O(Z)

— — ± 1.0 µA
Input Leakage Current (Power Off) V

out

= 6 V

V

out

= – 0.25 V

I

oxh

I

oxl

—

—

—
—

100

–100

µA

NOTES:

1. See EIA specifications EIA–422–A for exact test conditions.

2. Only one output may be shorted at a time.

This device contains circuitry to protect the
inputs against damage due to high static volt­ages or electric fields; however, it is advised that
normal precautions be taken to avoid applica­tions of any voltage higher than the maximum
rated voltages to this high impedance circuit.

For proper operation it is recommended that
Vin and V

out

be constrained to the range VSS ≤

(Vin or V

out

) ≤ VDD. Reliability of operation is
enhanced if unused inputs are tied to and
appropriate logic voltage level (e.g., either V

SS

or VDD).

MC26C31MOTOROLA

3

AC CHARACTERISTICS (V

CC

= 4.5 to 5.5 V, TA = – 40 to + 85°C, unless otherwise stated)

Parameter

Symbol Min Typ Max Unit

Propagation Delay Input to Output (S1 Open) t

PLH

t

PHL

— 6 12 ns

Output Skew (S1 Open)* Skew — 1.0 4 ns
Differential Output

Rise Time
Fall Time (S1 Open)

t

(TLH)

t

(THL)

— 4 8 ns

Output Enable Time

(S1 Closed)

t

PZH

t

PZL

—
—

16
15

—
—

ns

Output Disable Time

(S1 Closed)

t

PHZ

t

PLZ

—
—

6
9

—
—

ns

*Skew: difference in propagation delays between complementary outputs.

AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS

47 pF

47 pF

47 pF

49.9

Ω

49.9

Ω

499

Ω

S1

1.5 V

INPUT

Figure 1. AC Test Circuit

OUTPUT A

1.5 V

t

PHL

OUTPUT B

1.5 V 1.5 V

1.5 VINPUT

1.5 V 1.5 V

— V

OH

V

OL

V

OH

— V

OL

t

PLH

t

PLH

t

PHL

SKEW

3 V —

0 V

Figure 2. Propagation Delays and Skew Waveforms

Figure 3. Enable and Disable Times

OUTPUT A

1.5 V

t

PZL

OUTPUT B

0.8 V

1.5 VENABLE INPUT

VOH – 0.5 V 2.0 V

— 1.5 V

V

OL

V

OH

t

PLZ

t

PZH

t

PHZ

3 V —

0 V

— 1.5 V

VOL + 0.5 V

Figure 4. Differential Rise and Fall Times

OUTPUT

(DIFFERENTIAL)

90%

t

THL

10%

90%

INPUT

t

TLH

3 V —

0 V

10%

TYPICAL APPLICATIONS

Figure 5. Two–Wire Balanced Systems (EIA–422–A)

+
–

DATA

DATA
OUTPUT

ENABLE

MC26C31 MOTOROLA
4

PACKAGE DIMENSIONS

P SUFFIX
PLASTIC DIP
CASE 648–08

NOTES:

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

2. CONTROLLING DIMENSION: INCH.

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

4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.

5. ROUNDED CORNERS OPTIONAL.

–A–

B

F

C

S

H

G

D

J

L

M

16 PL

SEATING

1 8

916

K

PLANE

–T–

M

A

M

0.25 (0.010) T

DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A 0.740 0.770 18.80 19.55
B 0.250 0.270 6.35 6.85
C 0.145 0.175 3.69 4.44
D 0.015 0.021 0.39 0.53
F 0.040 0.70 1.02 1.77
G 0.100 BSC 2.54 BSC
H 0.050 BSC 1.27 BSC
J 0.008 0.015 0.21 0.38
K 0.110 0.130 2.80 3.30
L 0.295 0.305 7.50 7.74
M 0 10 0 10
S 0.020 0.040 0.51 1.01

____

D SUFFIX

SOG PACKAGE

CASE 751B–05

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

1 8

16 9

SEATING

PLANE

F

J

M

R

X 45

_

G

8 PLP

–B–

–A–

M

0.25 (0.010) B

S

–T–

D

K

C

16 PL

S

B

M

0.25 (0.010) A

S

T

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 9.80 10.00 0.386 0.393
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 0.229 0.244
R 0.25 0.50 0.010 0.019

_ _ _ _

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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 can and do vary in different
applications. All operating parameters, including “T ypicals” must be validated for each customer application by customer’s technical experts. Motorola does
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MC26C31/D

*MC26C31/D*

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