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74_257 - Multiplexer

Baustelle

Quad 2-Input Multiplexer (3-State)

The 74F257A is a quad 2-input multiplexer with 3-STATE outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (non-inverted) form. The outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems.

Pinbelegung / Pinout

74_257

im Amiga

TypCommo-Nr. C= Bezeichnung C= Info Form Editors Info
A 315033-01XXX IC 74LS257 *=901521-57
B 380227-58IC 74 HCT 257A-SIDECAR
C 390091-01IC 74 F 257AMIGA-2000
D 391495-01IC 74 F 257 SMDA-4000 So-16
E 901521-57IC 74 LS 257 N(7708)*
F 901525-28IC 74 S 257


Alternativ-Typ : xx (lt. Commodore ? )


VorkommenAnzahlTypPosition Bemerkung
Axx 1 ? U,-
A3640 1 D U212,-



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Zuletzt geändert: 2024/09/22 00:26