SN74FB2033A

8-BIT TTL/BTL REGISTERED TRANSCEIVER

SCBS174M – NOVEMBER 1991 – REVISED SEPTEMBER 2001

1

POST OFFICE BOX 655303

(BTL)

(BTL) B Port

100 mA

During Live Insertion or Withdrawal

and Power Down

Connector and PC Trace to the BTL

High-Level Voltage

Clamping Networks to Aid in Line

Termination

14 15 16 17 18 19 20 21 22 23 24 25 26

52 51 50 49 48 47 46 45 44 43 42 41 40

RC PACKAGE

(TOP VIEW)

GND

AO2

AI3

AO3

AI4

AO4

LOOPBACK

AI5

AO5

AI6

AO6

AI7

GND

GND

B2

GND

B3

GND

B4

GND

B5

GND

B6

GND

B7

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

39

38

37

36

35

34

33

32

31

30

29

28

27

description

The SN74FB2033A is an 8-bit transceiver featuring a split input (AI) and output (AO) bus on the TTL-level A port.

The common-I/O, open-collector B port operates at backplane transceiver logic (BTL) signal levels.

The logic element for data flow in each direction is configured by two mode inputs (IMODE1 and IMODE0 for

B-to-A, OMODE1 and OMODE0 for A-to-B) as a buffer, a D-type flip-flop, or a D-type latch. When configured

in the buffer mode, the inverted input data appears at the output port. In the flip-flop mode, data is stored on

the rising edge of the appropriate clock input (CLKAB/LEAB or CLKBA/LEBA). In the latch mode, the clock

inputs serve as active-high transparent latch enables.

Copyright

 2001, 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.