SN55115, SN75115

DUAL DIFFERENTIAL RECEIVERS

SLLS072D – SEPTEMBER 1973 – REVISED MAY 1998

1

POST OFFICE BOX 655303

(Totem-Pole) Outputs

Terminating Resistor

SN55114, and SN75114 Drivers

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 temperature range of – 55

°C to 125°C. The

SN75115 is characterized for operation from 0

°C to 70°C.

FUNCTION TABLE

STRB

DIFF INPUT

(A AND B)

OUTPUT

(YP AND YS

TIED

TOGETHER)

L

X

H

H

LH

H

H

L

H = VI ≥ VIH min or VID more positive than VT+ max

L = VI ≤ VIL max or VID more negative thanVT– max

X = irrelevant

Copyright

© 1998, 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

1A

GND

2YS

2YP

2STRB

2RTC

2B

2A

SN55115 ...J OR W PACKAGE

SN75115 ...N PACKAGE

(TOP VIEW)

32

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

2YP

2STRB

NC

2RTC

2B

1STRB

1RTC

NC

1B

SN55114 . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection