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FEATURES

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OE

1Q

1D

2D

2Q

3Q

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4D

4Q

GND

8Q

8D

7D

7Q

6Q

6D

5D

5Q

CLK

SN54LVC374A . . . J OR W PACKAGE

SN74LVC374A . . . DB, DGV, DW, N, NS,

OR PW PACKAGE

(TOP VIEW)

SN54LVC374A . . . FK PACKAGE

(TOP VIEW)

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SN74LVC374A . . . RGY PACKAGE

(TOP VIEW)

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8Q

8D

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6Q

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5Q

1Q

1D

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DESCRIPTION/ORDERING INFORMATION

SN54LVC374A, SN74LVC374A

OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS

WITH 3-STATE OUTPUTS

SCAS296N – JANUARY 1993 – REVISED MAY 2005

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Operation

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Operate From 1.65 V to 3.6 V

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Latch-Up Performance Exceeds 250 mA Per

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Inputs Accept Voltages to 5.5 V

JESD 17

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ESD Protection Exceeds JESD 22

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– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

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– 1000-V Charged-Device Model (C101)

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Support Mixed-Mode Signal Operation on

All Ports (5-V Input/Output Voltage

These devices feature 3-state outputs designed specifically for driving highly capacitive or relatively

low-impedance loads. These devices are particularly suitable for implementing buffer registers, input/output (I/O)

ports, bidirectional bus drivers, and working registers.

On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D)

inputs.

A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or

low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the

bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines

without interface or pullup components.

OE does not affect internal operations of the latch. Old data can be retained or new data can be entered while

the outputs are in the high-impedance state.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators

in a mixed 3.3-V/5-V system environment.

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 1993–2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

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

Instruments standard warranty. Production processing does not

tested unless otherwise noted. On all other products, production

necessarily include testing of all parameters.

processing does not necessarily include testing of all parameters.