HD26LS31
Quadruple Differential Line Drivers With 3 State Outputs
REJ03D0294–0200Z
(Previous ADE-205-576 (Z))
Rev.2.00
Jul.16.2004
Description
The HD26LS31 features quadruple differential line drivers which satisfy the requirements of EIA standard RS-422A.
This device is designed to provide differential signals with high current capability on bus lines. The circuit provides
enable input to control all four drivers. The output circuit has active pull up and pull down and is capable of sinking or
sourcing 40 mA.
Features
•
Ordering Information
Part Name
HD26LS31P
Package Type
DILP-16 pin
Package Code
DP-16E, -16FV
P
Package
Abbreviation
—
Taping Abbreviation
(Quantity)
Logic Diagram
1A
1Y
1Z
2Y
2Z
3Y
3Z
4Y
4Z
2A
3A
4A
Enable G
Enable G
Rev.2.00, Jul.16.2004, page 1 of 11
HD26LS31
Pin Arrangement
1A 1
1Y 2
1Z 3
Enable G 4
2Z 5
2Y 6
2A 7
GND 8
16 V
CC
15 4A
14 4Y
13 4Z
12 Enable G
11 3Z
10 3Y
9 3A
(Top view)
Function Table
Input
A
H
L
H
L
X
H
L
X
Z
:
:
:
:
H
H
X
X
L
High level
Low level
Irrelevant
High impedance (Off)
Enables
G
X
X
L
L
H
G
H
L
H
L
Z
Outputs
Y
L
H
L
H
Z
Z
Absolute Maximum Ratings
Item
Supply Voltage
Input Voltage
Output Voltage
Power Dissipation
Storage Temperature Range
V
CC
V
IN
V
OUT
P
T
Topr
Symbol
7.0
7.0
5.5
1
0 to +70
Ratings
V
V
V
W
°C
Unit
Lead Temperature Range
Tstg
–65 to +150
°C
Note: 1. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two
of which may be realized at the same time.
Recommended Operating Conditions
Item
Supply Voltage
Output Current
Output Current
Operating Temperature
Symbol
V
CC
I
OH
I
OL
Topr
Min
4.75
—
—
0
Typ
5.0
—
—
25
Max
5.25
–40
40
70
Unit
V
mA
mA
—
V
CC
All Output
All Output
—
Application Terminal
Rev.2.00, Jul.16.2004, page 2 of 11
HD26LS31
Electrical Characteristics
(Ta = 0 to +70°C)
Item
Input Voltage
Symbol
V
IH
V
IL
Min Typ*
2.0
—
—
2.5
—
—
—
—
—
—
—
–30
—
—
—
—
—
—
—
—
—
—
—
—
—
32
1
Max
—
0.8
–1.5
—
2.4
0.5
–20
20
0.1
20
Unit
V
Application
Terminal
All Inputs
Conditions
Input Clamp Voltage V
IK
Output Voltage
V
OH
V
OH
V
OL
Output Current
Input Current
I
OZL
I
OZH
I
I
I
IH
All Outputs
V
CC
= 4.75 V, I
I
= –18 mA
V
CC
= 4.75 V
I
OH
= –20 mA
I
OH
= –40 mA
I
OL
= 40 mA
mA
mA
µA
All Inputs
V
CC
= 5.25 V
V
CC
= 5.25 V
V
CC
= 5.25 V
V
O
= 0.5 V
V
O
= 2.5 V
V
I
= 7 V
V
I
= 2.7 V
V
I
= 0.4 V
I
IL
Short Circuit Output I
OS
*
2
Current
Supply Current
I
CC
–0.36 mA
–150
80
All Outputs
V
CC
V
CC
= 5.25 V
V
CC
= 5.25 V
Notes: 1. All typical values are at V
CC
= 5 V, Ta = 25°C
2. Not more than one output should be shorted at a time and duration of the short circuit should not exceed one
second.
Switching Characteristics
(V
CC
= 5 V, Ta = 25°C)
Item
Propagation Delay Time
Output Enable Time
Output Disable Time
Complementary Output To
Output
Application
Symbol Min Typ Max Unit terminal
t
PLH
t
PHL
t
ZH
t
ZL
t
HZ
t
LZ
Skew
—
—
—
—
—
—
—
14
14
25
37
21
23
1
20
20
40
45
30
35
6
ns
ns
ns
ns
ns
ns
ns
All Outputs
Test
circuit
1
2
3
2
3
1
CL = 30 pF
C
L
= 30 pF, R
L
Ω
75
=
C
L
= 30 pF, R
L
Ω
180
=
C
L
= 10 pF
C
L
= 10 pF
C
L
= 30 pF
Conditions
Rev.2.00, Jul.16.2004, page 3 of 11
HD26LS31
Test Circuit 1
4.5 V
G
Input
Pulse Generator
PRR = 1MHz
Duty Cycle 50%
Zout = 50Ω
G
Z
Y
Output
C
L
=
30 pF
C
L
=
30 pF
Output
A
Note:
1. C
L
includes probe and jig capacitance.
Waveforms
t
r
Input
0.3 V
t
PLH
Output Y
2.7 V
1.3 V
2.7 V
1.3 V
0.3 V
t
PHL
V
OH
1.5 V
Skew
t
PHL
1.5 V
t
PLH
V
OH
Output Z
1.5 V
V
OL
1.5 V
Skew
V
OL
t
f
3V
0V
Rev.2.00, Jul.16.2004, page 4 of 11
HD26LS31
Test Circuit 2
V
CC
4.5 V
Output
180
Ω
S1
75
Ω
A
Input
Pulse Generator
PRR = 1 MHz
Duty Cycle 50%
Zout = 50Ω
Y
Z
C
L
Output
G
G
C
L
S1
75
Ω
180
Ω
Note:
1. C
L
includes probe and jig capacitance.
Waveforms
t
r
Enable G
0.3 V
2.7 V
1.5 V
2.7 V
1.5 V
0.3 V
t
f
3V
0V
Enable G
S1 : Open
t
ZH
S1 : Closed
t
HZ
V
OH
1.5 V
0V
Output
S1 Open
1.5 V
0.5 V
Rev.2.00, Jul.16.2004, page 5 of 11
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