SEMICONDUCTOR
TECHNICAL DATA
QUAD EIA–422 LINE DRIVER
WITH THREE–STATE OUTPUTS
PIN CONNECTIONS
Order this document by AM26LS31/D
PC SUFFIX
PLASTIC PACKAGE
CASE 648
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
Device Operating
Temperature Range Package
ORDERING INFORMATION
AM26LS31PC
MC26LS31D* TA = 0 to +70°CPlastic DIP
SO–16
11
10 Outputs C
9
6
5
Outputs D
13
14
Outputs A 3
2
8
7
4
1
12
15
Outputs B Enable
VCC
Input C
Input D
Input A 16
Enable
Input B
Gnd
1
MOTOROLA ANALOG IC DEVICE DATA
The Motorola AM26LS31 is a quad differential line driver intended for
digital data transmission over balanced lines. It meets all the requirements of
EIA–422 Standard and Federal Standard 1020.
The AM26LS31 provides an enable/disable function common to all four
drivers as opposed to the split enables on the MC3487 EIA–422 driver.
The high impedance output state is assured during power down.
•Full EIA–422 Standard Compliance
•Single +5.0 V Supply
•Meets Full VO = 6.0 V, VCC = 0 V, IO
t
100 µA Requirement
•Output Short Circuit Protection
•Complementary Outputs for Balanced Line Operation
•High Output Drive Capability
•Advanced LS Processing
•PNP Inputs for MOS Compatibility
Representative Block Diagrams
Enable
Enable
Input
Non–Inverting
Outputs
Inverting
Output
Controls
TRUTH TABLE
Input Control
lnputs
(E/E)
Non–Inverting
Output Inverting
Output
H
L
X
H/L
H/L
L/H
H
L
Z
L
H
Z
* Note that the surface mount MC26LS31D device uses the same die as in the plastic DIP
*AM26LS31DC device, but with an MC prefix to prevent confusion with the package suffix.
Motorola, Inc. 1995
L = Low Logic State
H = High Logic State
X = Irrelevant
Z = Third–State (High Impedance)
AM26LS31
2MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage VCC 8.0 Vdc
Input Voltage VI5.5 Vdc
Operating Ambient Temperature Range TA0 to + 70 °C
Operating Junction Temperature Range TJ150 °C
Storage Temperature Range Tstg – 65 to + 150 °C
ELECTRICAL CHARACTERISTICS (Unless otherwise noted, specifications apply 4.75 V
p
VCC
p
5.25 V and 0°C
p
TA
p
70°C.
Typical values measured at VCC = 5.0 V, and TA = 25°C.)
Characteristic Symbol Min Typ Max Unit
Input Voltage – Low Logic State VIL – – 0.8 Vdc
Input Voltage – High Logic State VIH 2.0 – – Vdc
Input Current – Low Logic State
(VIL = 0.4 V) IIL – – – 360 µA
Input Current – High Logic State
(VIH = 2.7 V)
(VIH = 7.0 V)
IIH –
––
–+ 20
+ 100
µA
Input Clamp Voltage
(IIK = – 18 mA) VIK – – – 1.5 V
Output Voltage – Low Logic State
(IOL = 20 mA) VOL – – 0.5 V
Output Voltage – High Logic State
(IOH = –20 mA) VOH 2.5 – – V
Output Short Circuit Current
(VIH = 2.0 V) Note 1 IOS – 30 – – 150 mA
Output Leakage Current – Hi–Z State
(VOL = 0.5 V, VIL(E) = 0.8 V, VIH(E) = 2.0 V)
(VOH = 2.5 V, VIL(E) = 0.8 V, VIH(E) = 2.0 V)
IO(Z) –
––
–– 20
+ 20
µA
Output Leakage Current – Power OFF
(VOH = 6.0 V, VCC = 0 V)
(VOL = – 0.25 V, VCC = 0 V)
IO(off) –
––
–+ 100
– 100
µA
Output Offset Voltage Difference, Note 2 VOS – VOS – –
"
0.4 V
Output Differential Voltage, Note 2 VOD 2.0 – – V
Output Differential Voltage Difference, Note 2 ∆VOD– – ± 0.4 V
Power Supply Current
(Output Disabled) Note 3 ICCX – 60 80 mA
NOTES: 1.Only one output may be shorted at a time.
2.See EIA Specification EIA–422 for exact test conditions.
3.Circuit in three–state condition.
SWITCHING CHARACTERISTICS (VCC = 5.0 V, TA = 25°C unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
Propagation Delay Times
High to Low Output
Low to High Output tPHL
tPLH –
––
–20
20
ns
Output Skew – – 6.0 ns
Propagation Delay – Control to Output
(CL = 10 pF, RL = 75 Ω to Gnd)
(CL = 10 pF, RL = 180 Ω to VCC)
(CL = 30 pF, RL = 75 Ω to Gnd)
(CL = 30 pF, RL = 180 Ω to VCC)
tPHZ(E)
tPLZ(E)
tPZH(E)
tPZL(E)
–
–
–
–
–
–
–
–
30
35
40
45
ns
AM26LS31
3
MOTOROLA ANALOG IC DEVICE DATA
Pulse generator characteristics
3.0 V
Scope
(Input)
Non–Inv
Output 75
200
5.0 V
Scope
(Output)
3.0 V
Enable
CL = 30 pF
Inv
Output
50
3.0 V
+ 5 V
75
Inv
Output
180
CL
Non–Inv
Output
To Scope
Output
3.0 V or Gnd
Input
To Scope (Input)
Enable
50
VOH
VOL
tPLH
VOH
Pulse
Generator
≈
1.5 V
≈
1.5 V
VOL
0 V
tPLZ(E)
VOH VOL
0 V
0 V
VOH
0
CL Includes Probe and Jig Capacitance. See Test Table.
RL – See Test Table
tPHL
1.3 V
1.3 V
1.3 V
0 V
1.3 V
0 V
1.3 V
1.3 V
Output
Output
tPHL
Input
Control
Input
(Enable)
CL Includes Probe and Jig Capacitance
1.3 V
tPHZ(E)
3.0 V
0.5 V
0
Output
Output
0.5 V
3.0 V
1.3 V
1.3 V
1.3 V
Pulse
Generator
Control
Input
(Enable)
Output
Output
tPZH(E)
tPZL(E)
tPLH
Open for tPZH(E) Test Only
0 V
VOL
Figure 1. Three–State Enable Test Circuit and Waveforms
Figure 2. Propagation Delay Times Input to Output Waveforms and Test Circuit
Zo = 50 Ω
PRR
p
1.0 MHz
50% Duty Cycle
tTLH, tTHL
p
6 ns
Pulse generator characteristics
Zo = 50 Ω
PRR
p
1.0 MHz
50% Duty Cycle
tTLH, tTHL
p
6 ns
AM26LS31
4MOTOROLA ANALOG IC DEVICE DATA
OUTLINE DIMENSIONS
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
FC
S
HGD
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
A0.740 0.770 18.80 19.55
B0.250 0.270 6.35 6.85
C0.145 0.175 3.69 4.44
D0.015 0.021 0.39 0.53
F0.040 0.70 1.02 1.77
G0.100 BSC 2.54 BSC
H0.050 BSC 1.27 BSC
J0.008 0.015 0.21 0.38
K0.110 0.130 2.80 3.30
L0.295 0.305 7.50 7.74
M0 10 0 10
S0.020 0.040 0.51 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
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
RX 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
A9.80 10.00 0.386 0.393
B3.80 4.00 0.150 0.157
C1.35 1.75 0.054 0.068
D0.35 0.49 0.014 0.019
F0.40 1.25 0.016 0.049
G1.27 BSC 0.050 BSC
J0.19 0.25 0.008 0.009
K0.10 0.25 0.004 0.009
M0 7 0 7
P5.80 6.20 0.229 0.244
R0.25 0.50 0.010 0.019
____
PC SUFFIX
PLASTIC PACKAGE
CASE 648–08
ISSUE R
D SUFFIX
PLASTIC PACKAGE
CASE 751B–05
(SO–16)
ISSUE J
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AM26LS30/D
*AM26LS30/D*
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