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74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
Rev. 6 — 1 February 2016
Product data sheet
1. General description
The 74HC253; 74HCT253 is a dual 4-bit multiplexer, each with four binary inputs (nI0 to
nI3), an output enable input (nOE) and shared select inputs (S0 and S1). One of the four
binary inputs is selected by the select inputs and routed to the output nY. A HIGH on nOE
causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes.
This enables the use of current limiting resistors to interface inputs to voltages in excess
of V
CC
.
2. Features and benefits
Non-inverting data path
3-state outputs interface directly with system bus
Complies with JEDEC standard no. 7A
Common select inputs
Separate output enable inputs
Input levels:
For 74HC253: CMOS level
For 74HCT253: TTL level
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from
40 C
to +85
C
and from
40 C
to +125
C
3. Applications
Data selectors
Data multiplexers
NXP Semiconductors
74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
4. Ordering information
Table 1.
Ordering information
Package
Temperature range
74HC253D
74HCT253D
74HC253DB
74HCT253DB
40 C
to +125
C
SSOP16
40 C
to +125
C
Name
SO16
Description
plastic small outline package; 16 leads; body width
3.9 mm
plastic shrink small outline package; 16 leads;
body width 5.3 mm
Version
SOT109-1
SOT338-1
Type number
5. Functional diagram
Fig 1.
Logic symbol
Fig 2.
Functional diagram
74HC_HCT253
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 6 — 1 February 2016
2 of 16
NXP Semiconductors
74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
Fig 3.
Logic diagram
6. Pinning information
6.1 Pinning
Fig 4.
Pin configuration SO16
Fig 5.
Pin configuration SSOP16
74HC_HCT253
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 6 — 1 February 2016
3 of 16
NXP Semiconductors
74HC253; 74HCT253
Dual 4-input multiplexer; 3-state
6.2 Pin description
Table 2.
Symbol
1OE, 2OE
S0, S1
1I0, 1I1, 1I2, 1I3
1Y
GND
2Y
2I0, 2I1, 2I2, 2I3
V
CC
Pin description
Pin
1, 15
14, 2
6, 5, 4, 3
7
8
9
10, 11, 12, 13
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.
S0
X
L
L
H
H
L
L
H
H
[1]
Function table
[1]
data inputs
S1
X
L
L
L
L
H
H
H
H
nI0
X
L
H
X
X
X
X
X
X
nI1
X
X
X
L
H
X
X
X
X
nI2
X
X
X
X
X
L
H
X
X
nI3
X
X
X
X
X
X
X
L
H
output enable
nOE
H
L
L
L
L
L
L
L
L
output
nY
Z
L
H
L
H
L
H
L
H
select Inputs
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
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
Parameter
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
0.5
V < V
O
< V
CC
+ 0.5 V
[1]
[1]
Conditions
Min
0.5
-
-
-
-
70
65
Max
+7.0
20
50
35
70
-
+150
Unit
V
mA
mA
mA
mA
mA
C
74HC_HCT253
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 6 — 1 February 2016
4 of 16
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