74HC251-Q100; 74HCT251-Q100
8-input multiplexer; 3-state
Rev. 1 — 12 August 2013
Product data sheet
1. General description
The 74HC251-Q100; 74HCT251-Q100 is an 8-bit multiplexer with eight binary inputs (I0
to I7), three select inputs (S0 to S2) and an output enable input (OE). The select inputs
select one of the eight binary inputs and route it to the complementary outputs (Y and Y).
A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Inputs include
clamp diodes that enable the use of current limiting resistors to interface inputs to voltages
in excess of V
CC
.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from
40 C
to +85
C
and from
40 C
to +125
C
Input levels:
For 74HC251-Q100: CMOS level
For 74HCT251-Q100: TTL level
Low-power dissipation
Non-inverting data path
Specified in compliance with JEDEC standard no. 7A
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0
)
Multiple package options
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74HC251D-Q100
74HCT251D-Q100
74HC251PW-Q100
74HCT251PW-Q100
40 C
to +125
C
TSSOP16
40 C
to +125
C
Name
SO16
Description
Version
plastic small outline package; 16 leads; body width SOT109-1
3.9 mm
plastic thin shrink small outline package; 16 leads; SOT403-1
body width 4.4 mm
Type number
Nexperia
74HC251-Q100; 74HCT251-Q100
8-input multiplexer; 3-state
4. Functional diagram
Fig 1.
Logic symbol
Fig 2.
Functional diagram
Fig 3.
Logic diagram
74HC_HCT251_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 12 August 2013
2 of 18
Nexperia
74HC251-Q100; 74HCT251-Q100
8-input multiplexer; 3-state
5. Pinning information
5.1 Pinning
Fig 4.
Pin configuration SO16
Fig 5.
Pin configuration TSSOP16
5.2 Pin description
Table 2.
Symbol
I0 to I7
Y
Y
OE
GND
S0, S1, S2
V
CC
Pin description
Pin
4, 3, 2, 1, 15, 14, 13, 12
5
6
7
8
11, 10, 9
16
Description
data inputs
multiplexer output
complementary multiplexer output
output enable input (active LOW)
ground (0 V)
common data select inputs
supply voltage
74HC_HCT251_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 12 August 2013
3 of 18
Nexperia
74HC251-Q100; 74HCT251-Q100
8-input multiplexer; 3-state
6. Functional description
Table 3.
Input
OE
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
[1]
Function table
[1]
Output
S2
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
S1
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
S0
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
I0
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
I1
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
X
X
I2
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
X
I3
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
I4
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
I5
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
I6
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
I7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
Y
Z
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
Y
Z
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
74HC_HCT251_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 12 August 2013
4 of 18
Nexperia
74HC251-Q100; 74HCT251-Q100
8-input multiplexer; 3-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
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
Parameter
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
Conditions
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)
Min
0.5
-
-
-
-
50
65
Max
+7
20
20
25
+50
-
+150
500
Unit
V
mA
mA
mA
mA
mA
C
mW
T
amb
=
40 C
to +125
C
[1][1]
-
For SO16 package: P
tot
derates linearly with 8 mW/K above 70
C.
For TSSOP16 package: P
tot
derates linearly with 5.5 mW/K above 60
C.
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
V
CC
V
I
V
O
T
amb
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
Conditions
74HC251-Q100
Min
2.0
0
0
40
-
-
-
Typ
5.0
-
-
+25
-
1.67
-
Max
6.0
V
CC
V
CC
+125
625
139
83
74HCT251-Q100
Min
4.5
0
0
40
-
-
-
Typ
5.0
-
-
+25
-
1.67
-
Max
5.5
V
CC
V
CC
+125
-
139
-
V
V
V
C
ns/V
ns/V
ns/V
Unit
74HC_HCT251_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 12 August 2013
5 of 18
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