TI SN75126N

SN75126
QUADRUPLE LINE DRIVER
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
•
•
•
•
•
•
•
Meets or Exceeds the Requirements of
IBM System 360/370 Input/Output
Interface Specification GA22-6974-3
Minimum Output Voltage of 3.11 V at
IOH = – 59.3 mA
Fault-Flag Circuit Output Signals Driver
Output Fault
Fault-Detection Current-Limit Circuit
Minimizes Power Dissipation During a
Fault Condition
Dual Common Enable
Individual Fault Flags
Designed to Replace 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
The SN75126 quadruple line driver is designed to
meet the IBM 360/370 I/O specification A22-6974-3.
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 SN75126 is compatible with standard
TTL logic and supply voltages.
G
A
L
H
H
X
H
H
OUTPUTS
Y
F
L
H
H
H
S
L
H = high level,
L = low level,
X = irrelevant,
S = shorted to ground
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 SN75126 can drive a 50-Ω load 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 SN75128 or SN75129 line receivers. Also, see the
SN751730 for new 360/370 interface designs.
The SN75126 is characterized for operation from 0°C to 70°C.
IBM is a trademark of International Business Machines Corp.
Copyright  1995, 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
2–1
SN75126
QUADRUPLE LINE DRIVER
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
logic symbol†
1A
3
logic diagram (positive logic)
&
1EN2
2
G1
1, 2G 4
2A
1
2
&
3EN4
1Y
3
1A
4
1, 2G
5
7
10
11
1
2F
6
G3
4
3A
6
2
1F
2Y
2A
5
7
3, 4G
4A
12
14
1Y
2F
2Y
3F
10
9
1F
3Y
4F
11
3A
12
3, 4G
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
R(eq)
TYPICAL OF F OUTPUTS
VCC
20 kΩ NOM
Y Output
Input
F Output
GND
GND
A Inputs: R(eq) – 20 kΩ NOM
G Inputs: R(eq) – 10 kΩ NOM
R(eq) = equivalent resistor
GND
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2–2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN75126
QUADRUPLE LINE DRIVER
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
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
V
Low-level input voltage, VIL
0.8
High-level output current, IOH
Operating free-air temperature, TA
0
V
– 59.3
mA
70
°C
electrical characteristics over recommended operating free-air temperature range
PARAMETER
VIK
Input clamp voltage
TEST CONDITIONS
A,G
Y
VOH
High-level output voltage
Y
F
Y
VOL
Low-level out
output
ut voltage
Y
F
IO(
O(off)
ff)
Off state output current
Off-state
II
Input current
IIH
High level input current
High-level
IIL
Low level input current
Low-level
Y
Y
A
G
A
G
A
G
Y
IOS
Short circuit output current
Short-circuit
F
Y
F
MIN
MAX
UNIT
– 1.5
V
VCC = 4.5 V,
VCC = 4.5 V,
II = – 18 mA
IOH = – 59.3 mA,
VCC = 5.25 V,
VCC = 4.5 V,
IOH = – 41 mA,
IOH = – 400 µA,
VCC = 5.5 V,
VCC = 5.95 V,
IOL = – 240 µA,
IOL = – 1 mA,
VCC = 4.5 V,,
VIH = 2 V
IOL = 8 mA,,
Y at 0 V,,
VCC = 4.5 V,
VCC = 0,
VI = 0,
VI = 0,
VO = 3.11 V
VO = 3.11 V
5V
VCC = 4
4.5
V,
5V
VI = 5
5.5
VCC = 4
4.5
5V
V,
VI = 2
2.7
7V
VCC = 5
5.95
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 V
VIH = 2 V
70
VIL = 0.8 V
VIL = 0.8 V
55
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,
POST OFFICE BOX 655303
No load,
No load,
• DALLAS, TEXAS 75265
VIH = 2 V
VIH = 2 V
VIH = 2 V
VIL = 0.8 V
3.11
V
3.9
2.5
0.15
VIL = 0.8 V
0.15
V
05
0.5
100
200
100
200
20
40
– 250
– 500
µA
µA
µA
µA
–5
– 15
– 100
–5
– 15
mA
– 110
80
70
mA
mA
2–3
SN75126
QUADRUPLE LINE DRIVER
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
switching characteristics at TA = 25°C
FROM
(INPUT)
PARAMETER
tPLH
Propagation delay time,
time lowlow to high-level
high level output
tPHL
time highhigh to low-level
low level output
Propagation delay time,
tPLH
tPHL
Ratio of propagation delay times
tPLH
Propagation delay time,
time lowlow to high-level
high level output
TO
(OUTPUT)
A
Y
A
tPHL
Propagation delay time,
time highhigh to low-level
low level output
tPLH
Propagation delay time,
time lowlow to high-level
high level output
Y
F
A
tPHL
Propagation delay time,
time highhigh to low-level
low level output
TEST CONDITIONS
VCC = 4
4.5
5 V to 5
5.5
5V
V,
RL = 50 Ω
Ω,
F
CL = 50 pF,
VOH(ref) = 3.11 V,
S Figures
Fi
d2
See
1 and
VCC = 5.25 V to 5.95 V,
RL = 90 Ω,
CL = 50 pF,
F,
VOH(ref) = 3.9 V,
See Figures 1 and 2
VCC = 5 V,
CL = 15 pF,
RL = 2 kΩ,
kΩ
S Figures
See
Fi
1 and
d2
MIN
MAX
UNIT
40
ns
37
ns
03
0.3
3
45
ns
45
ns
60
ns
100
ns
PARAMETER MEASUREMENT INFORMATION
tr
tf
90%
1.3 V
A Input
4V
90%
1.3 V
10%
10%
tPLH
0V
tPHL
Normal Operation
VOH
VOH(ref)
0.8 V
Y Output
tPHL
VOL
tPLH
VOH
F Output
1.3 V
Driver Short-Circuit
Operation
1.3 V
VOL
NOTE: 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
2–4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN75126
QUADRUPLE LINE DRIVER
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
PARAMETER MEASUREMENT INFORMATION
5V
RL = 2 kΩ
Y Output
RL
F Output
CL = 50 pF
(see Note A)
Close for
Testing F
CL = 15 pF
(see Note A)
NOTE A: CL includes probe and stray capacitance.
Figure 2. Switching Characteristics Load Circuits
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
2–5
SN75126
QUADRUPLE LINE DRIVER
FAMILY NAME
SLLS060B – FEBRUARY 1990 – REVISED MAY 1995
2–6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
30-Mar-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
SN75126N
OBSOLETE
PDIP
N
Pins Package Eco Plan (2)
Qty
16
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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