74HCT253DB,112 查看數據表（PDF） - NXP Semiconductors.
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74HCT253DB,112 Datasheet PDF : 17 Pages
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NXP Semiconductors
74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
6.2 Pin description
Table 2. Pin description
Symbol
Pin
1OE, 2OE
1, 15
S0, S1
14, 2
1I0, 1I1, 1I2, 1I3
6, 5, 4, 3
1Y
7
GND
8
2Y
9
2I0, 2I1, 2I2, 2I3
10, 11, 12, 13
VCC
16
Description
output enable inputs (active LOW)
data select inputs
data inputs source 1
multiplexer output source 1
ground (0 V)
multiplexer output source 2
data inputs source 2
supply voltage
7. Functional description
Table 3. Function table[1]
select Inputs
data inputs
output enable output
S0
S1
nI0
nI1
nI2
nI3
nOE
nY
X
X
X
X
X
X
H
Z
L
L
L
X
X
X
L
L
L
L
H
X
X
X
L
H
H
L
X
L
X
X
L
L
H
L
X
H
X
X
L
H
L
H
X
X
L
X
L
L
L
H
X
X
H
X
L
H
H
H
X
X
X
L
L
L
H
H
X
X
X
H
L
H
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
8. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min Max Unit
VCC
supply voltage
IIK
input clamping current
IOK
output clamping current
IO
output current
VI < −0.5 V or VI > VCC + 0.5 V
VO < −0.5 V or VO > VCC + 0.5 V
−0.5 V < VO < VCC + 0.5 V
−0.5 +7.0 V
[1] -
±20 mA
[1] -
±50 mA
-
±35 mA
ICC
IGND
Tstg
supply current
ground current
storage temperature
-
70
mA
−70 -
mA
−65 +150 °C
74HC_HCT253_3
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 03 — 22 April 2010
© NXP B.V. 2010. All rights reserved.
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