ST M74HC253 User Manual
M74HC253
DUAL 4 CHANNEL MULTIPLEXER 3 STATE OUTPUT
■ HIGH SPEED:
t
= 16ns (TYP.) at VCC = 6V
PD
■ LOW POWER DISSIPATION:
I
= 4µA(MAX.) at TA=25°C
CC
■ HIGH NOISE IMMUNITY:
V
= V
NIH
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
| = IOL = 4mA (MIN)
OH
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PLH
■ WIDE OPERATING VOLTAGE RANGE:
V
(OPR) = 2V to 6V
CC
■ PIN AND FUNCTION COMPATIBLE WITH
= 28 % VCC (MIN.)
NIL
PHL
74 SERIES 253
DESCRIPTION
The M74HC253 is an high speed CM OS DU AL 4
CHANNEL MULTIPLEXER fabricated with silicon
gate C
2
MOS technology.
Each of these data (1C0-1C3, 2C0-2C3) is
selected by the two address inputs A and B.
Separate strobe inpu ts (1G
, 2G) are provided for
each of the two four-line sections. The strobe input
TSSOPDIP SOP
ORDER CODES
PACKAGE TUBE T & R
DIP M74HC253B1R
SOP M74HC253M1R M74HC253RM13TR
TSSOP M74HC253TTR
(nG
) can be used to inhibit the data output; the
output of M74HC253 is a high impedance while
the strobe input is held high.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/11July 2001
M74HC253
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1, 15 1G
14, 2 A, B Common Data Select
6, 5, 4, 3 1C0 to 1C3 Data Inputs From
7, 9 1Y, 2Y 3 State Multiplexer
10, 11, 12, 132C0 to 2C3 Data Inputs From
8 GND Ground (0V)
16 V
TRUTH TABLE
, 2G Output Enable Inputs
CC
Inputs
Source 1
Outputs
Source 2
Positive Supply Voltage
SELECT INPUTS DATA INPUTS STROBE
BA
C
0
C
1
C
2
C
3
G
OUTPUT Y
XXXXXXHZ
LLLXXXLL
LLHXXXLH
LHXLXXLL
LHXHXXLH
HLXXLXLL
HLXXHXLH
HHXXXLLL
HHXXXHLH
X : Don’t Care
Z : High Impedance
2/11
LOGIC DIAGRAM
M74HC253
This log i c diagram has not be used to est i m at e propagation delays
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
OK
I
I
or I
CC
P
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65
Supply Voltage
CC
DC Input Voltage -0.5 to VCC + 0.5
I
DC Output Voltage -0.5 to VCC + 0.5
O
DC Input Diode Current
IK
DC Output Diode Current
DC Output Current
O
DC VCC or Ground Current
GND
Power Dissipation
D
Storage Temperature
stg
Lead Temperature (10 sec)
L
°C; derate to 300mW by 10mW/°C from 65°C to 85°C
-0.5 to +7 V
V
V
± 20 mA
± 20 mA
± 25 mA
± 50 mA
500(*) mW
-65 to +150 °C
300 °C
3/11
M74HC253
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
T
t
r
DC SPECIFICATIONS
Symbol Parameter
V
IH
V
IL
V
OH
V
OL
I
I
I
OZ
I
CC
Supply Voltage
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature
op
Input Rise and Fall Time VCC = 2.0V
, t
f
V
V
CC
CC
= 4.5V
= 6.0V
Test Condition Value
T
= 25°C
A
Min. Typ. Max. Min. Max. Min. Max.
High Level Input
V
CC
(V)
2.0 1.5 1.5 1.5
Voltage
6.0 4.2 4.2 4.2
Low Level Input
2.0 0.5 0.5 0.5
Voltage
6.0 1.8 1.8 1.8
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
High Impedance
Output Leakage
Current
Quiescent Supply
Current
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
6.0
6.0
6.0
IO=-20 µA
I
=-20 µA
O
I
=-20 µA
O
I
=-4.0 mA
O
I
=-5.2 mA
O
=20 µA
I
O
I
=20 µA
O
I
=20 µA
O
I
=4.0 mA
O
I
=5.2 mA
O
= VCC or GND
V
I
= VIH or V
V
I
IL
VO = VCC or GND
= VCC or GND
V
I
1.9 2.0 1.9 1.9
4.4 4.5 4.4 4.4
5.9 6.0 5.9 5.9
4.18 4.31 4.13 4.10
5.68 5.8 5.63 5.60
0.0 0.1 0.1 0.1
0.0 0.1 0.1 0.1
0.0 0.1 0.1 0.1
0.17 0.26 0.33 0.40
0.18 0.26 0.33 0.40
± 0.1 ± 1 ± 1 µA
± 0.5 ± 5 ± 5 µA
44080µA
2 to 6 V
CC
CC
-55 to 125 °C
0 to 1000 ns
0 to 500 ns
0 to 400 ns
-40 to 85°C -55 to 125°C
V
V
Unit
V4.5 3.15 3.15 3.15
V4.5 1.35 1.35 1.35
V
V
4/11
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