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 20A/20A 15mA/64mA

NOTE: One (1.0) FAST Unit Load (U.L.) is defined as: 20A 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)
74F670 74F670; 4 X 4 Register File (3-State);; Package: SOT162-1 (SO16), SOT38-1 (DIP16)
74F674 74F674; 16-bit Serial/parallel-in, Serial-out Shift Register (3-State)
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)
74F723-1 74F723A; 74F723-1; 74F725A; 74F725-1; Various Quad Data Selector Multiplexers (3-State)
74F74 74F74; Dual D-type Flip-flop;; Package: SOT27-1 (DIP14)
74F756 74F756; 74F757; 74F760; Octal Inverter Buffer (open-collector); Octal Buffer (open-collector); Octal Buffer (open-collector);; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F764-1 DRAM Dual-ported Controller
74F776 74F776; Pi-bus Transceiver;; Package: SOT117-1 (DIP28), SOT261-2 (PLCC28)
74F777 74F777; Triple Bidirectional Latched Bus Transceiver (3-State + Open Collector);; Package: SOT146-1 (DIP20), SOT380-1 (PLCC20)
74F779 74F779; 8-bit Bidirectional Binary Counter (3-State);; Package: SOT38-1 (DIP16)
74F786 74F786; 4-bit Asynchronous Bus Arbiter;; Package: SOT109 (SO16), SOT38-4 (DIP16)
74F804 74F804; 74F1804; Hex 2-input NAND Drivers;; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F805 74F805; 74F1805; Hex 2-input Nor Drivers;; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F808 74F808; 74F1808; Hex 2-input And Drivers;; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F821 74F821; 74F822; 74F823; 74F824; 74F825; 74F826; Bus Interface Registers;; Package: SOT222-1 (DIP24)
74F827 74F827; 74F828; 10-bit Buffer/line Driver, Non-inverting (3-State); 10-bit Buffer/line Driver, Inverting (3-State);; Package: SOT137 (SO24), SOT222-1 (DIP24), SOT340-1 (SSOP24)
74F832 74F832; 74F1832; Hex 2-input or Drivers;; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F835 8-bit Shift Register With 2:1 Mux-in, Latched B Inputs, And Serial Out
0-C     D-L     M-R     S-Z