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MM74HC157N

P1-P3P4-P6P7-P7
September 1983
Revised February 1999
MM74HC157 Quad 2-Input Multiplexer
© 1999 Fairchild Semiconductor Corporation DS005314.prf www.fairchildsemi.com
MM74HC157
Quad 2-Input Multiplexer
General Description
The MM74HC157 high speed Quad 2-to-1 Line data selec-
tor/Multiplexers utilizes advanced silicon-gate CMOS tech-
nology. It possesses the high noise immunity and low
power consumption of standard CMOS integrated circuits,
as well as the ability to drive 10 LS-TTL loads.
This device consists of four 2-input digital multiplexers with
common select and STROBE inputs. When the STROBE
input is at logical “0” the four outputs assume the values as
selected from the inputs. When the STROBE input is at a
logical “1” the outputs assume logical “0”.
The 74HC logic family is functionally as well as pin-out
compatible with the standard 74LS logic family. All inputs
are protected from damage due to static discharge by inter-
nal diode clamps to V
CC
and ground.
Features
■ Typical propagation delay: 14 ns data to any output
■ Wide power supply range: 2–6V
■ Low power supply quiescent current: 80 µA maximum
(74HC Series)
■ Fan-out of 10 LS-TTL loads
■ Low input current: 1 µA maximum
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignments for DIP, SOIC, SOP and TSSOP
Top View
Function Table
H = HIGH Level,
L = LOW Level
X = Irrelevant
Order Number Package Number Package Description
MM74HC157M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
MM74HC157SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HC157MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HC157N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Inputs Output
Strobe Select A B Y
HXXXL
LLLXL
LLHXH
LHXLL
LHXHH
www.fairchildsemi.com 2
MM74HC157
Logic Diagram
3 www.fairchildsemi.com
MM74HC157
Absolute Maximum Ratings(Note 1)
(Note 2)
Recommended Operating
Conditions
Note 1: Absolute Maximum Ratings are those values beyond which dam-
age to the device may occur.
Note 2: Unless otherwise specified all voltages are referenced to ground.
Note 3: Power Dissipation temperature derating — plastic “N” package: −
12 mW/°C from 65°C to 85°C.
DC Electrical Characteristics (Note 4)
Note 4: For a power supply of 5V ±10% the worst case output voltages (V
OH
, and V
OL
) occur for HC at 4.5V. Thus the 4.5V values should be used when
designing with this supply. Worst case V
IH
and V
IL
occur at V
CC
= 5.5V and 4.5V respectively. (The V
IH
value at 5.5V is 3.85V.) The worst case leakage cur-
rent (I
IN
, I
CC
, and I
OZ
) occur for CMOS at the higher voltage and so the 6.0V values should be used.
Supply Voltage (V
CC
) −0.5 to +7.0V
DC Input Voltage (V
IN
) −1.5 to V
CC
+1.5V
DC Output Voltage (V
OUT
) −0.5 to V
CC
+0.5V
Clamp Diode Current (I
IK
, I
OK
) ±20 mA
DC Output Current, per pin (I
OUT
) ±25 mA
DC V
CC
or GND Current, per pin (I
CC
) ±50 mA
Storage Temperature Range (T
STG
) −65°C to +150°C
Power Dissipation (P
D
)
(Note 3) 600 mW
S.O. Package only 500 mW
Lead Temperature (T
L
)
(Soldering 10 seconds) 260°C
Min Max Units
Supply Voltage (V
CC
)26V
DC Input or Output Voltage 0 V
CC
V
(V
IN
, V
OUT
)
Operating Temperature Range (T
A
) −40 +85 °C
Input Rise or Fall Times
(t
r
, t
f
) V
CC
= 2.0V 1000 ns
V
CC
= 4.5V 500 ns
V
CC
= 6.0V 400 ns
Symbol Parameter Conditions
V
CC
T
A
= 25°CT
A
= −40 to 85°CT
A
= −55 to 125°C
Units
Typ Guaranteed Limits
V
IH
Minimum HIGH Level 2.0V 1.5 1.5 1.5 V
Input Voltage 4.5V 3.15 3.15 3.15 V
6.0V 4.2 4.2 4.2 V
V
IL
Maximum LOW Level 2.0V 0.5 0.5 0.5 V
Input Voltage 4.5V 1.35 1.35 1.35 V
6.0V 1.8 1.8 1.8 V
V
OH
Minimum HIGH Level V
IN
= V
IH
or V
IL
Output Voltage |I
OUT
| ≤ 20 µA 2.0V 2.0 1.9 1.9 1.9 V
4.5V 4.5 4.4 4.4 4.4 V
6.0V 6.0 5.9 5.9 5.9 V
V
IN
= V
IH
or V
IL
|I
OUT
| ≤ 4.0 mA 4.5V 4.2 3.98 3.84 3.7 V
|I
OUT
| ≤ 5.2 mA 6.0V 5.7 5.48 5.34 5.2 V
V
OL
Maximum LOW Level V
IN
= V
IH
or V
IL
Output Voltage |I
OUT
| ≤ 20 µA 2.0V 0 0.1 0.1 0.1 V
4.5V 0 0.1 0.1 0.1 V
6.0V 0 0.1 0.1 0.1 V
V
IN
= V
IH
or V
IL
|I
OUT
| ≤ 4.0 mA 4.5V 0.2 0.26 0.33 0.4 V
|I
OUT
| ≤ 5.2 mA 6.0V 0.2 0.26 0.33 0.4 V
I
IN
Maximum Input V
IN
= V
CC
or GND 6.0V ±0.1 ±1.0 ±1.0 µA
Current
I
CC
Maximum Quiescent V
IN
= V
CC
or GND 6.0V 8.0 80 160 µA
Supply Current I
OUT
= 0 µA
P1-P3P4-P6P7-P7

MM74HC157N

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Manufacturer:
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Description:
Encoders, Decoders, Multiplexers & Demultiplexers Qd 2-Inp Mulitplexer
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