Texas Instruments SN55115N, SN55115W, SN75115FK Datasheet
SN55115, SN75115
DUAL DIFFERENTIAL RECEIVERS
SLLS072C – SEPTEMBER 1973 – REVISED MARCH 1997
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Choice of Open-Collector or Active Pullup
(Totem-Pole) Outputs
D
Single 5-V Supply
D
Differential Line Operation
D
Dual-Channel Operation
D
TTL Compatible
D
±15-V Common-Mode Input Voltage Range
D
Optional-Use Built-In 130-Ω LineT erminating Resistor
D
Individual Frequency Response Controls
D
Individual Channel Strobes
D
Designed for Use With SN55113, SN75113,
SN55114, and SN75114 Drivers
D
Designed to Be interchangeable With
National DS9615 Line Receivers
description
The SN55115 and SN75115 dual differential line
receivers are designed to sense small differential
signals in the presence of large common-mode
noise. These devices give TTL-compatible
output signals as a function of the differential
input voltage. The open-collector output configuration permits the wire-ANDing of similar TTL
outputs (such as SN5401/SN7401) or other
SN55115/SN75115 line receivers. This permits a
level of logic to be implemented without extra
delay. The output stages are similar to TTL totem-pole outputs, but with sink outputs, 1YS and 2YS, and the
corresponding active pullup terminals, 1YP and 2YP, available on adjacent package pins. The frequency
response and noise immunity may be provided by a single external capacitor. A strobe input is provided for each
channel. With the strobe in the low level, the receiver is disabled and the outputs are forced to a high level.
The SN55115 is characterized for operation over the full military range of –55°C to 125°C. The SN75115 is
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
DIFF INPUT
OUTPUT
(
YP AND YS
STRB
(A AND B)
(
TIED
TOGETHER)
L X H
H LH
HHL
H = VI ≥ VIH min or VID more positive than VT+ max
L = VI ≤ VIL max or VID more negative than VT– max
X = irrelevant
Copyright 1997, 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
1YS
1YP
1STRB
1RTC
1B
1R
T
1A
GND
V
CC
2YS
2YP
2STRB
2RTC
2B
2R
T
2A
SN55115 ...J OR W PACKAGE
SN75115 ...N PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
2YP
2STRB
NC
2RTC
2B
1STRB
1RTC
NC
1B
1R
T
SN55114 . . . FK PACKAGE
(TOP VIEW)
1YP
1YSNC2YS
1A
GND
NC
NC – No internal connection
CC
V
2A
2R
T
SN55115, SN75115
DUAL DIFFERENTIAL RECEIVERS
SLLS072C – SEPTEMBER 1973 – REVISED MARCH 1997
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
&
2YS
2YP
1YS
1YP
R
T
RSP
12
13
10
9
11
4
3
6
7
5
2RTC
2STRB
2R
T
2A
2B
1RTC
1STRB
1R
T
1A
1B
15
14
1
2
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
11
9
10
12
13
2YP (Pullup)
2YS (Sink)
14
15
2B
2A
2R
T
2RTC
2SRTB
1SRTB
1RTC
1R
T
1A
1B
1
2
1YP (Pullup)
3
4
6
7
5
1YS (Sink)
SN55115, SN75115
DUAL DIFFERENTIAL RECEIVERS
SLLS072C – SEPTEMBER 1973 – REVISED MARCH 1997
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematic (each receiver)
Input 7.9
V
V
V
V
150
2.5 k
Common to
Both Receivers
A
8 k
7 k
1 pF
1.5 k 1.64 k
B
Input 5.11
130 150
150
8 k
7 k
1 pF
1.64 k
1 k 1 k
130
2.6 k
500
2.6 k
500
150
1.5 k
3 k
5 k
20
2 k
R
T
6,10
Strobe
3,13
Response
Time
Control
4,12
2.7 k
16
V
CC
2,14 Pullup
YP
1,15
Output
YS
8
GND
Sink
Resistor values are nominal and in ohms.
Pin numbers shown are for J, N, and W packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
SN55115 SN75115 UNIT
Supply voltage, VCC (see Note 1) 7 7 V
Input voltage, VI (A, B, and RT) ±25 ±25 V
Input voltage, VI (STRB) 5.5 5.5 V
Off-state voltage applied to open-collector outputs 14 14 V
Continuous total power dissipation See Dissipation Rating Table
Operating free-air temperature range, T
A
–55 to 125 0 to 70 °C
Storage temperature range, T
stg
–65 to 150 –65 to 150 °C
Case temperature for 60 seconds: FK package 260 °C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J or W package 300 °C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: N package 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.
NOTE 1: All voltage values, except differential input voltage, are with respect to network ground terminal.
SN55115, SN75115
DUAL DIFFERENTIAL RECEIVERS
SLLS072C – SEPTEMBER 1973 – REVISED MARCH 1997
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DISSIPATION RATING TABLE
T
≤ 25°C DERATING FACTOR T
= 70°C T
= 125°C
PACKAGE
A
POWER RATING ABOVE TA = 25°CAPOWER RATINGAPOWER RATING
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 —
W
†
1000 mW 8.0 mW/°C 640 mW 200 mW
‡
In the FK, J, and W packages, SN55115 chips are either silver glass or alloy mounted. SN75115 chips are
glass mounted.
recommended operating conditions
SN55115 SN75115
MIN NOM MAX MIN NOM MAX
UNIT
Supply voltage, V
CC
4.5 5 5.5 4.75 5 5.25 V
High-level input voltage at STRB, V
IH
2.4 2.4 V
Low-level input voltage at STRB, V
IL
0.4 0.4 V
High-level output current, I
OH
–5 –5 mA
Low-level output current, I
OL
15 15 mA
Operating free-air temperature, T
A
–55 125 0 70 °C
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