TI SN75ALS126

SN75ALS126
QUADRUPLE LINE DRIVER
SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993
D
D
D
D
D
D
D
D
Meets IBM 360/370 I/O Interface
Specification GA22-6974-3 (Also See
SN75ALS130)
Minimum Output Voltage of 3.11 V at
IOH = – 60 mA
Fault-Flag Circuit Output Signals Driver
Output Fault
Fault-Detection Current Limit Circuit
Minimizes Power Dissipation During a
Fault Condition
Advanced Low-Power Schottky Circuitry
Dual Common Enable
Individual Fault Flags
Designed to Be an Improved Replacement
for the MC3481
D OR N PACKAGE
(TOP VIEW)
1Y
1F
1A
1,2G
2A
2F
2Y
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
4Y
4F
4A
3,4G
3A
3F
3Y
FUNCTION TABLE
INPUTS
description
OUTPUTS
G
A
Y
F
L
H
H
X
H
H
L
H
S
H
H
L
H = high level, L = low level,
The SN75ALS126 quadruple line driver is
X = irrelevant,
S = shorted to GND
designed to meet the IBM 360/370 I/O
specification GA22-6974-3. The output voltage is
3.11 V minimum (at IOH = – 59.3 mA) over the recommended ranges of supply voltage (4.5 V to 5.95 V) and
temperature. Driver outputs use a fault-detection current-limit circuit to allow high drive current but still minimize
power dissipation when the output is shorted to ground. The SN75ALS126 is compatible with standard T TL logic
and supply voltages.
The SN75ALS126 employs the IMPACT process to achieve fast switching speeds and low power dissipation.
Fault-flag circuitry is designed to sense and signal a line short on any Y line. Upon detecting an output fault
condition, the fault-flag circuit forces the driver output into a low state and signals a fault condition by causing
the fault-flag output to go low.
The SN75ALS126 can drive a 50-Ω load as required in the IBM GA22-6974-3 specification or a 90-Ω load as
used in many I/O systems. Optimum performance can be achieved when the device is used with either the
SN75127, SN75128, or SN75129 line receivers.
The SN75ALS126 is characterized for operation from 0°C to 70°C.
IMPACT is a trademark of Texas Instruments Incorporated
Copyright  1993, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN75ALS126
QUADRUPLE LINE DRIVER
SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993
logic symbol†
1A
3
logic diagram (positive logic)
&
2
1EN2
2
1F
1A
1, 2G
G1
1, 2G
2
4
&
2A
3A
3, 4G
4A
1
6
3EN4
6
2F
2A
7
4
10
11
9
12
14
1
1F
1Y
1Y
G3
5
3
4
5
7
2F
2Y
2Y
3F
10
3Y
4F
3A
3, 4G
11
12
9
3F
3Y
13
15
14
4Y
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
4A
13
15
4F
4Y
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
TYPICAL OF ALL Y OUTPUTS
VCC
VCC
Req
TYPICAL OF F OUTPUT
VCC
20 kΩ NOM
Y Output
Input
F OUTPUT
GND
GND
A Inputs: Req = 20 kΩ NOM
G Inputs: Req = 10 kΩ NOM
2
GND
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN75ALS126
QUADRUPLE LINE DRIVER
SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
DISSIPATION RATING TABLE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
D
950 mW
7.6 mW/°C
608 mW
N
1150 mW
9.2 mW/°C
736 mW
PACKAGE
recommended operating conditions
Supply voltage, VCC
High-level input voltage, VIH
MIN
NOM
MAX
UNIT
4.5
5
5.95
V
2
Low-level input voltage, VIL
V
0.8
High-level output current, IOH
Operating free-air temperature, TA
0
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
V
– 59.3
mA
70
°C
3
SN75ALS126
QUADRUPLE LINE DRIVER
SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993
electrical characteristics over recommended operating free-air temperature range
PARAMETER
VIK
Input clamp voltage
VOH
High-level output voltage
TEST CONDITIONS
A,G
VCC = 5.5 V,
VCC = 5.95 V,
IOL = – 240 µA,
IOL = – 1 mA,
Y
VCC = 4.5 V,
VCC = 4.5 V,
IOL = 8 mA,
VIL = 0,
Y
VCC = 0 V,
VIL = 0,
VCC = 4
4.5
5V
V,
VI = 5
5.5
5V
VCC = 4
4.5
5V
V,
VI = 2
2.7
7V
VCC = 5.95
5 95 V
V,
VI = 0
0.4
4V
VCC = 5.5 V,
VCC = 5.5 V,
VO = 0,
VO = 0
VIH = 2.7 V
VCC = 5.95 V,
VCC = 5.95 V,
VO = 0,
VO = 0
VIH = 2.7 V
VIH = 2.7 V
VIH = 2.7 V
25
VIL = 0.4 V
VIL = 0.4 V
45
Y
F
Off state output current
Off-state
II
Input current
IIH
High level input current
High-level
IIL
Low level input current
Low-level
A
G
A
G
A
G
Y
F
IOS
Short circuit output
Short-circuit
V
IOH = – 41 mA,
IOH = – 400 µA,
Y
IO(
O(off)
ff)
UNIT
– 1.5
VCC = 5.25 V,
VCC = 4.5 V,
Y
F
Low-level output voltage
MAX
II = – 18 mA
IOH = – 59.3 mA,
Y
VOL
MIN
VCC = 4.5 V,
VCC = 4.5 V,
Y
F
ICCH
Supply current,
current all outputs high
VCC = 5.5 V,
VCC = 5.95 V,
No load,
ICCL
Supply current
current, Y outputs low
VCC = 5.5 V,
VCC = 5.95 V,
No load,
VIH = 2 V
VIH = 2 V
VIH = 2 V
VIL = 0.8 V
3.11
2.5
0.15
VIL = 0.8 V
Y at 0 V
0.15
VO = 3.11 V
VO = 3.11 V
100
200
100
400
20
80
– 250
–1000
µA
µA
µA
µA
–5
–100
–5
–15
No load,
V
0.5
–15
No load,
V
3.9
mA
–110
27
47
mA
mA
switching characteristics over recommended operating free-air temperature range
PARAMETER
tPLH
Propagation delay time,
low-to-high-level output
tPHL
Propagation delay time,
high-to-low-level output
tPLH
tPHL
Ratio of propagation delay
times
tPLH
Propagation delay time,
low-to-high-level output
tPHL
Propagation delay time,
high-to-low-level output
tPLH
Propagation delay time,
low-to-high-level output
tPHL
4
Propagation delay time,
high-to-low-level output
FROM
(INPUT)
A
TO
(OUTPUT)
Y
TEST CONDITIONS
4 5 V to
t 5.5
5 5 V,
V
VCC = 4.5
RL = 50 Ω,
See Figures 1 and 2
MIN
F
CL = 50 pF,
VH(ref) = 3.11 V,
0.3
A
A
Y
F
VCC = 5.25 V to 5.95 V,
RL = 90 Ω
Ω,
See Figures 1 and 2
CL = 50 pF,
VH(
3.9
9V
V,
H(ref)
f) = 3
VCC = 5 V,
CL = 15 pF,
RL = 2 kΩ,
See Figures 1 and 2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MAX
UNIT
30
ns
28
ns
3
34
ns
34
ns
45
ns
75
ns
SN75ALS126
QUADRUPLE LINE DRIVER
SLLS016C – FEBRUARY 1986 – REVISED FEBRUARY 1993
PARAMETER MEASUREMENT INFORMATION
tf
tr
4V
90%
90%
1.3 V
1.3 V
10%
10%
A Input
tPLH
0V
Normal
Operation
tPHL
VOH
VH(ref)
0.5 V
Y Output
tPHL
VOL
tPLH
F Output
VOH
1.3 V
Driver Short-Circuit
Operation
1.3 V
VOL
NOTE A: The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle ≤ 50%,
tr ≤ 6 ns, tf ≤ 6 ns, ZO ≈ 50 Ω.
Figure 1. Input and Output Voltage Waveforms
5V
RL = 2 kΩ
Y Output
RL
CL = 50 pF
(see Note A)
F Output
Close for
Testing F
CL = 15 pF
(see Note A)
NOTE A: CL includes probe and stray capacitance.
Figure 2. Switching Characteristics Load Circuits
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• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
24-Jun-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
SN75ALS126D
OBSOLETE
SOIC
D
Pins Package Eco Plan (2)
Qty
14
TBD
Lead/Ball Finish
Call TI
MSL Peak Temp (3)
Call TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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Addendum-Page 1
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