HD74HC253 Datasheet, PDF (1/7 Pages) Hitachi Semiconductor – Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)

HD74HC253
Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
REJ03D0600–0200
(Previous ADE-205-477)
Rev.2.00
Jan 31, 2006
Description
The large output drive and 3-state features of this device make it ideally suited for interfacing with bus lines in bus
organized systems. When the output control input is taken high, the multiplexer outputs are sent into a high impedance
state.
When the output control is held low, the associated multiplexer chooses the correct output channel for the given input
signals determined by the select A and B inputs.
Features
• High Speed Operation: t_pd (Data to Y) = 18 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 4 µA max (Ta = 25°C)
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC253P
DILP-16 pin
PRDP0016AE-B
(DP-16FV)
P
HD74HC253FPEL SOP-16 pin (JEITA)
PRSP0016DH-B
(FP-16DAV)
FP
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
Function Table
Inputs
Select
Data
B
A
C₀
C₁
C₂
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
Notes: 1. H: high level, L: low level, X: irrelevant
2. Z; high impedance (off-state)
3. Address inputs A and B are common to both sections.
Output Control
Output
C₃
G
Y
H
Z
L
D₀
L
D₁
L
D₂
L
D₃
L
D₄
L
D₅
L
D₆
L
D₇
Rev.2.00 Jan 31, 2006 page 1 of 6