Rev.2.00 Jan 31, 2006 page 1 of 8

HD74HC299

8-bit Universal Shift/Storage Register (with 3-state outputs)

REJ03D0609–0200

(Previous ADE-205-488)

Rev.2.00

Jan 31, 2006

Description

The HD74HC299 features multiplexed inputs/outputs to achieve full 8-bit data handling in a single 20-pin package.

Due to the large output drive capability and 3-state feature, this device is ideally suited for interfacing with bus lines in

a bus oriented system. Two function select inputs and two output control inputs are used to choose the mode of

operation as listed in the function table. Synchronous parallel loading is accomplished by taking both function select

input/output lines to be clocked into the register. Reading out of the register can be done while the outputs are enabled

in any mode. A direct overriding clear input is provided to clear the register whether the outputs are enabled or

disabled.

Features

• High Speed Operation

• High Output Current: Fanout of 15 LSTTL Loads

• Wide Operating Voltage: V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: I

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74HC299FPEL

SOP-20 pin (JEITA)

PRSP0020DD-B

(FP-20DAV)

FP

EL (2,000 pcs/reel)

HD74HC299RPEL

SOP-20 pin (JEDEC)

PRSP0020DC-A

(FP-20DBV)

RP

EL (1,000 pcs/reel)

Note:

Please consult the sales office for the above package availability.