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Details, datasheet, quote on part number: 74F655A
CategoryLogic => Buffers/Inverters => 3-State
DescriptionOctal Buffer/driver With Parity, Non-inverting 3-state
CompanyPhilips Semiconductors (Acquired by NXP)
DatasheetDownload 74F655A datasheet


Features, Applications

74F655A* Octal buffer/driver with parity, inverting (3-State) 74F656A Octal buffer/driver with parity, non-inverting (3-State)

* Discontinued part. Please see the Discontinued Product List.

74F655A Octal buffer/driver with parity, inverting (3-State) 74F656A Octal buffer/driver with parity, non-inverting (3-State)


· Significantly improved AC performance over 74F655 and 74F656· High impedance NPN base input for reduced loading


The 74F655A and 74F656A are octal buffers and line drivers with parity generation/checking designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers. These parts include parity generator/checker to improve PC board density. TYPICAL PROPAGATION DELAY 6.5ns

· Ideal in applications where high output drive and light bus loading· 74F655A combines 74F240 and 74F280A functions in one

· 74F655A Inverting· 74F656A Non-inverting· 3-State outputs sink 64mA and source 15mA· 24-pin plastic Slim DIP (300mil) package· Inputs on one side and outputs on the other side simplifies PC

· Combined functions reduce part count and enhance system

DESCRIPTION 24-pin Plastic Slim DIP (300mil) 24-pin Plastic SOL COMMERCIAL RANGE VCC 5V ±10%, Tamb N74F656AN N74F656AD INDUSTRIAL RANGE VCC 5V ±10%, Tamb I74F656AN I74F656AD PKG DWG SOT222-1 SOT137-1

PINS O Q0­Q7 Data inputs Parity input Output Enable Inputs (active Low) Parity outputs Data outputs (74F655A) Data outputs (74F656A) DESCRIPTION 74F(U.L.) HIGH/LOW LOAD VALUE HIGH/LOW 20µA/20µA 15mA/64mA

NOTE: One (1.0) FAST Unit Load (U.L.) is defined as: 20µA in the High state and 0.6mA in the Low state.

* Discontinued part. Please see the Discontinued Products List. 1991 Jul 17

* Discontinued part. Please see the Discontinued Products List.

Some Part number from the same manufacture Philips Semiconductors (Acquired by NXP)
74F656A 74F656A; Octal Buffer/driver With Parity, Non-inverting (3-State);; Package: SOT137 (SO24), SOT222-1 (DIP24)
74F657 74F657; Octal Transceiver With 8-bit Parity Generator/checker;; Package: SOT137-1 (SO24), SOT222-1 (DIP24)
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74F676 74F676; 16-bit Serial/parallel-in, Serial-out Shift Register (3-State);; Package: SOT137 (SO24), SOT222-1 (DIP24)
74F7111 74F711A; 74F711-1; 74F712A; 74F712-1; Multiplexers;; Package: SOT146-1 (DIP20), SOT163 (SO20)
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74F777 74F777; Triple Bidirectional Latched Bus Transceiver (3-State + Open Collector);; Package: SOT146-1 (DIP20), SOT380-1 (PLCC20)
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0-C     D-L     M-R     S-Z