74HC_HCT251_15 Datasheet, PDF (4/20 Pages) NXP Semiconductors – 8-input multiplexer; 3-state

NXP Semiconductors
74HC251; 74HCT251
8-input multiplexer; 3-state
6. Functional description
Table 3. Function table^[1]
Input
Output
OE S2
S1
S0
I0
I1
I2
I3
I4
I5
I6
I7
Y
Y
H
X
X
X
X
X
X
X
X
X
X
X
Z
Z
L
L
L
L
L
X
X
X
X
X
X
X
H
L
L
L
L
L
H
X
X
X
X
X
X
X
L
H
L
L
L
H
X
L
X
X
X
X
X
X
H
L
L
L
L
H
X
H
X
X
X
X
X
X
L
H
L
L
H
L
X
X
L
X
X
X
X
X
H
L
L
L
H
L
X
X
H
X
X
X
X
X
L
H
L
L
H
H
X
X
X
L
X
X
X
X
H
L
L
L
H
H
X
X
X
H
X
X
X
X
L
H
L
H
L
L
X
X
X
X
L
X
X
X
H
L
L
H
L
L
X
X
X
X
H
X
X
X
L
H
L
H
L
H
X
X
X
X
X
L
X
X
H
L
L
H
L
H
X
X
X
X
X
H
X
X
L
H
L
H
H
L
X
X
X
X
X
X
L
X
H
L
L
H
H
L
X
X
X
X
X
X
H
X
L
H
L
H
H
H
X
X
X
X
X
X
X
L
H
L
L
H
H
H
X
X
X
X
X
X
X
H
L
H
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. 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
V_CC
I_IK
I_OK
I_O
I_CC
I_GND
T_stg
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
V_I < 0.5 V or V_I > V_CC + 0.5 V
V_O < 0.5 V or V_O > V_CC + 0.5 V
V_O = 0.5 V to (V_CC + 0.5 V)
0.5 +7
V
-
20 mA
-
20 mA
-
25 mA
-
+50 mA
50 -
mA
65 +150 C
74HC_HCT251
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 9 July 2013
© NXP B.V. 2013. All rights reserved.
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