CY29FCT52T

8-BIT REGISTERED TRANSCEIVER

SCCS010A – MAY 1994 – REVISED OCTOBER 2001

1

POST OFFICE BOX 655303

With FCT, F Logic, and AM2952

of Equivalent FCT Functions

Significantly Improved Noise

Characteristics

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

Operation

Output Logic Levels

32-mA Output Source Current

description

The CY29FCT52T has two 8-bit back-to-back registers that store data flowing in both directions between two

bidirectional buses. Separate clock, clock enable, and 3-state output-enable signals are provided for each

register. Both A outputs and B outputs are specified to sink 64 mA.

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

PIN DESCRIPTION

NAME

DESCRIPTION

A

A register inputs or B register outputs

B

B register inputs or A register outputs

CPA

Clock for the A register. When CEA is low, data enters the A register on the low-to-high transition of the CPA signal.

CEA

Clock enable for the A register. When CEA is low, data enters the A register on the low-to-high transition of the CPA signal. When CEA

is high, the A register holds its contents, regardless of CPA signal transitions.

OEA

Output enable for the A register. When OEA is low, the A register outputs are enabled onto the B lines. When OEA is high, the A outputs

are in the high-impedance state.

CPB

Clock for the B register. When CEB is low, data enters the B register on the low-to-high transition of the CPB signal.

CEB

Clock enable for the B register. When CEB is low, data enters the B register on the low-to-high transition of the CPB signal. When

CEB is high, the B register holds its contents, regardless of CPA signal transitions.

OEB

Output enable for the B register. When OEB is low, the B register outputs are enabled onto the A lines. When OEB is high, the B outputs

are in the high-impedance 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.

Q OR SO PACKAGE

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OEB

CPA

CEA

GND

OEA

CPB

CEB