74HC257 Datasheet, PDF (3/13 Pages) NXP Semiconductors – Quad 2-input multiplexer 3-state

Philips Semiconductors
Quad 2-input multiplexer; 3-state
Product specification
74HC/HCT257
ORDERING INFORMATION
TYPE
NUMBER
74HC257N;
74HCT257N
74HC257D;
74HCT257D
74HC257DB;
74HCT257DB
74HC257PW;
74HCT257PW
NAME
DIP16
PACKAGE
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil); long body
SO16 plastic small outline package; 16 leads; body width 3.9 mm
SSOP16 plastic shrink small outline package; 16 leads; body width 5.3 mm
TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm
VERSION
SOT38-1
SOT109-1
SOT338-1
SOT403-1
PIN DESCRIPTION
PIN NO.
1
2, 5, 11, 14
3, 6, 10, 13
4, 7, 9, 12
8
15
16
SYMBOL
S
1I₀ to 4I₀
1I₁ to 4I₁
1Y to 4Y
GND
OE
V_CC
NAME AND FUNCTION
common data select input
data inputs from source 0
data inputs from source 1
3-state multiplexer outputs
ground (0 V)
3-state output enable input (active LOW)
positive supply voltage
fpage
S1
1I0 ₂
1I1 3
1Y 4
2I0 ₅
2I1 6
2Y 7
GND 8
16 VCC
15 _OE
14 4I0
13 4I1
257
12 4Y
11 3I0
10 3I1
9 3Y
MLB311
fpage
1
S
2
1I0
1Y 4
3
1I1
5
2I0
6
2I1
2Y 7
11
3I0
10
3I1
3Y 9
14
4I0
13
4I1
4Y 12
15
OE
MGA835
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
1998 Sep 30
3