Texas Instruments SN55ALS194J, SN75ALS194D, SN75ALS194DR, SN75ALS194N, SN75ALS194NS Datasheet
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SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MA Y 1995
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meet or Exceed the Requirements of ANSI
Standard EIA/TIA-422-B and ITU
Recommendation V.11
D
Designed to Operate Up to 20 Mbaud
D
3-State TTL-Compatible Outputs
D
Single 5-V Supply Operation
D
High Output Impedance in Power-Off
Condition
D
Two Pairs of Drivers, Independently
Enabled
D
Designed as Improved Replacements for
the MC3487
description
These four differential line drivers are designed
for data transmission over twisted-pair or
parallel-wire transmission lines. They meet the
requirements of ANSI Standard EIA/TIA-422-B
and ITU Recommendation V.11 and are
compatible with 3-state TTL circuits. Advanced
low-power Schottky technology provides high
speed without the usual power penalty . Standby
supply current is typically only 26 mA. Typical
propagation delay time is less than 10 ns, and
enable/disable times are typically less than
16 ns.
High-impedance inputs keep input currents low:
less than 1 µA for a high level and less than
100 µA for a low level. The driver circuits can be
enabled in pairs by separate active-high enable
inputs. The SN55ALS194 and SN75ALS194 are
capable of data rates in excess of 20 megabits
per second and are designed to operate with the
SN55ALS195 and SN75ALS195 quadruple line
receivers.
The SN55ALS194 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN75ALS194 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUTS
OUTPUT
OUTPUTS
A EN
Y Z
H H H L
L H L H
X L Z Z
H = high level, L = low level, X = irrelevant,
Z = high impedance
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.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1Y
1Z
1, 2EN
2Z
2Y
2A
GND
V
CC
4A
4Y
4Z
3, 4EN
3Z
3Y
3A
SN55ALS194 ...J OR W PACKAGE
SN75ALS194 ...D OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
910111213
4
5
6
7
8
18
17
16
15
14
4Y
4Z
NC
3, 4EN
3Z
1Z
1, 2EN
NC
2Z
2Y
SN55ALS194 ...FK PACKAGE
(TOP VIEW)
1Y1ANC3Y4A
2A
GND
NC
NC – No internal connection
CC
V
3A
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MA Y 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for the D, J, N, and W packages.
1Y
2
1Z
3
2Y
6
2Z
5
1
1A
7
2A
4
1, 2EN
EN
3Y
10
3Z
11
4Y
14
4Z
13
9
3A
15
4A
12
3, 4EN
EN
logic diagram (positive logic)
2A
1A
7
1
4
2Z
2Y
1Z
1Y
5
6
3
2
1, 2EN
4A
3A
15
9
12
4Z
4Y
3Z
3Y
13
14
11
10
3, 4EN
schematics of inputs and outputs
EQUIVALENT OF EACH
DATA (A) INPUT
EQUIVALENT OF EACH
ENABLE INPUT
EQUIVALENT OF EACH
OUTPUT
Output
V
CC
V
CC
Input
V
CC
Input
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MA Y 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
(see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, V
O
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN55ALS194 – 55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN75ALS194 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case temperature for 60 seconds, T
C
: FK package 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or W package 260°C. . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package 300°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.
NOTE 1: All voltage values are with respect to network ground terminal
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 125°C
POWER RATING
D 950 mW 7.6 mW/°C 608 mW N/A
FK 1375 mW 11.0 mW/°C 880 mW 275 mW
J 1375 mW 11.0 mW/°C 880 mW 275 mW
N 1150 mW 9.2 mW/°C 736 mW N/A
W 1000 mW 8.0 mW/°C 640 mW 200 mW
recommended operating conditions
‡
SN55ALS194 SN75ALS194
MIN NOM MAX MIN NOM MAX
UNIT
Supply voltage, V
CC
4.5 5 5.5 4.75 5 5.25 V
All inputs, TA = 25°C 2 2
High-level input voltage, V
IH
A inputs, TA = Full range 2 2
V
EN inputs, TA = Full range 2.1 2
Low-level input voltage, V
IL
0.8 0.8 V
High-level output current, I
OH
–20 –20 mA
p
TA = 25°C 48 48
Low-level output current, I
OL
TA = Full range 20 48
mA
Operating free-air temperature, T
A
–55 125 0 70 °C
‡
Full range is TA = – 55°C to 125°C for SN55ALS194 and TA = 0°C to 70°C for SN75ALS194.
SN55ALS194, SN75ALS194
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS009D – OCTOBER 1985 – REVISED MA Y 1995
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS
†
MIN TYP‡MAX UNIT
V
IK
Input clamp voltage VCC = MIN, II = –18 mA – 1.5 V
p
V
= MIN,
SN55ALS194 2.4
VOHHigh-level output voltage
CC
,
IOH = –20 mA
SN75ALS194 2.5
V
V
OL
Low-level output voltage VCC = MIN, IOL = MAX 0.5 V
V
O
Output voltage IO = 0 0 6 V
|V
OD1
| Differential output voltage IO = 0 1.5 6 V
p
1/2 V
OD1
|V
OD2
|
Differential output voltage
OD1
or 2
§
V
∆|VOD|
Change in magnitude of
differential output voltage
¶
RL = 100 Ω, See Figure 1
± 0.4 V
V
OC
Common-mode output voltage ± 3 V
∆|VOC|
Change in magnitude of
common-mode output voltage
¶
± 0.4 V
p
p
VO = 6 V 100
IOOutput current with power off
V
CC
=
0
VO = – 0.25 V – 100
µ
A
VO = 2.7 V 100
I
OZ
High-impedance-state output current
V
CC
=
MAX
,
Output enables at 0.8 V
VO = 0.5 V – 100
µA
I
I
Input current at maximum input voltage VCC = MAX, VI = 5.5 V 100 µA
I
IH
High-level input current VCC = MAX, VI = 2.7 V 50 µA
I
IL
Low-level input current VCC = MAX, VI = 0.5 V – 200 µA
I
OS
Short-circuit output current
#
VCC = MAX, VI = 2 V –40 – 140 mA
I
CC
Supply current (all drivers) VCC = MAX, All outputs disabled 26 45 mA
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡
All typical values are at VCC = 5 V, TA = 25°C.
§
The minimum V
OD2
with a 100-Ω load is either 1/2 V
OD1
or 2 V, whichever is greater.
¶
∆ | VOD | and ∆ | VOC | are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to
a low level.
#
Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
switching characteristics, VCC = 5 V, TA = 25°C
TEST
SN55ALS194 SN75ALS194
PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX
UNIT
t
PLH
Propagation delay time, low- to high-level output
6 13 6 13 ns
t
PHL
Propagation delay time, high- to low-level output
CL = 15 pF,
9 14 9 14 ns
Output-to-output skew
See Figure 2
3.5 6 3.5 6 ns
t
t(OD)
Differential output transition time
CL = 15 pF,
See Figure 3
8 14 8 14 ns
t
PZH
Output enable time to high level 9 12 9 12 ns
t
PZL
Output enable time to low level
CL = 15 pF,
12 20 12 20 ns
t
PHZ
Output disable time from high level
L
See Figure 4
9 15 9 14 ns
t
PLZ
Output disable time from low level 12 15 12 15 ns
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