CY54FCT841T, CY74FCT841T

10-BIT LATCHES

WITH 3-STATE OUTPUTS

SCCS035A – SEPTEMBER 1994 – REVISED OCTOBER 2001

1

POST OFFICE BOX 655303

With FCT, F, and AM29841 Logic

Equivalent FCT Functions

Significantly Improved Noise

Characteristics

Operation

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

Output Logic Levels

– 32-mA Output Sink Current

– 12-mA Output Source Current

– 64-mA Output Sink Current

– 32-mA Output Source Current

description

The ’FCT841T bus-interface latches are designed to eliminate additional packages required to buffer existing

latches and provide additional data width for wider address/data paths or buses carrying parity. The ’FCT841T

devices are buffered 10-bit-wide versions of the FCT373 function.

The ’FCT841T devices’ high-performance interface is designed for high-capacitance-load drive capability, while

providing low-capacitance bus loading at both inputs and outputs. Outputs are designed for low-capacitance

bus loading in the high-impedance state.

outputs, preventing damaging current backflow through the device when it is powered down.

PIN DESCRIPTION

NAME

I/O

DESCRIPTION

D

I

Latch data inputs

LE

I

Latch-enable input. The latches are transparent when LE is high.

Input data is latched on the high-to-low transition.

Y

O

3-state latch outputs

OE

I

Output-enable control. When OE is low, the outputs are enabled.

When OE is high, the outputs are in the high-impedance (off) state.

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.

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

OE

GND

LE

CY54FCT841T ...D PACKAGE

CY74FCT841T ...P, Q, OR SO PACKAGE

(TOP VIEW)

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.