SN75140

DUAL LINE RECEIVER

SLLS080C – JANUARY 1977 – REVISED APRIL 1998

1

POST OFFICE BOX 655303

– Single-Ended Line Receiver

– Gated Oscillator

– Level Comparator

Applications

description

This device consists of a dual single-ended line receiver with TTL-compatible strobes and outputs. The

reference voltage (switching threshold) is applied externally and can be adjusted from 1.5 V to 3.5 V, making

it possible to optimize noise immunity for a given system design. Due to the low input current (less than 100

µA),

the device is suited ideally for party-line (data-bus) systems.

The SN75140 has a common reference-voltage pin and a common strobe.

The SN75140 is characterized for operation from 0

°C to 70°C.

FUNCTION TABLE

(each receiver)

LINE INPUT

STROBE

OUTPUT

≤ Vref – 100 mV

L

H

≥ Vref + 100 mV

X

L

X

H

L

H = high level, L = low level, X = irrelevant

2

COMSTRB

‡ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

3

1LINE

1OUT

1

≥1

5

2LINE

2OUT

7

≥1

6

COMREF

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

8

7

6

5

1OUT

COMSTRB

1LINE

GND

2OUT

COMREF

2LINE

P OR PS† PACKAGE

(TOP VIEW)

† The PS package is only available

left-ended taped and reeled (order

SN75140 PSR).