M54HC356
M74HC356
8 CHANNEL MULTIPLEXER/REGISTER
WITH LATCHES (3-STATE)
.
.
.
.
.
.
.
.
HIGH SPEED
t
PD
= 25 ns (TYP.) AT V
CC
= 5 V
LOW POWER DISSIPATION
I
CC
= 4
µA
(MAX.) AT T
A
= 25
°C
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 6 mA (MIN.)
BALANCED PROPAGATION DELAYS
t
PLH
= t
PHL
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO 6 V
PIN AND FUNCTION COMPATIBLE WITH
54/74LS356
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HC356F1R
M74HC356M1R
M74HC356B1R
M74HC356C1R
PIN CONNECTIONS
(top view)
DESCRIPTION
The M54/74HC356 is a high speed CMOS 8-CHAN-
NEL MULTIPLEXER/REGISTER (3-State) fabri-
cated in silicon gate C
2
MOS technology. It has the
same high speed performance of LSTTL combined
with true CMOS low consumption.
This device contains an 8 channel digital multiplexer
with an 8-bit input data register and a 3-bit address
input register with 3-state outputs. The one of eight
input data will be provided on the Y output pin (non-
inverted output) and W output pin (inverted output)
is determineted by the address data.
The information at the data inputs (D0 to D7) is
stored in the 8-bit flip-flop at the positive going edge
of clock input (CLOCK). The information at the ad-
dress inputs (S0 to S2) is stored in the 3-bit latch at
the negative pulse on SC input. These outputs are
disabled to be high-impedance when input G1 is
held high, input G2 is held high or input G3 is held
low. This device is suitable for interfacing with bus
lines in a bus organized system. The M54/74HC356
is similar in function to the M54/74HC354, which has
an 8-bit latch as the data register instead of an 8-bit
flip-flop. All inputs are equipped with protection cir-
cuits against static discharge and transient excess
voltage.
January 1993
NC =
No Internal
Connection
1/12
M54/M74HC356
TRUTH TABLE
INPUTS
S2
X
X
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
SELECT *
S1
X
X
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
S0
X
X
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
CLOCK
X
X
X
OUTPUT ENABLES
G1
G2
G3
H
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
H
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
X
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
W
Z
Z
Z
D0
D0n
D1
D1n
D2
D2n
D3
D3n
D4
D4n
D5
D5n
D6
D6n
D7
D7n
Y
Z
Z
Z
D0
D0n
D1
D1n
D2
D2n
D3
D3n
D4
D4n
D5
D5n
D6
D6n
D7
D7n
X: DON’T CARE Z: HIGH IMPEDANCE *: This column shows the input adress setup with SC LOW.
D1 ..... D7: The level of steady state inputs at input D1 througth D7, respectively, at the time of the LOW to HIGH transition of the clock.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
3/12
M54/M74HC356
PIN DESCRIPTION
PIN No
8, 7,, 6, 5,
4, 3, 2, 1
9
11
14, 13, 12
15, 16
17
18
19
10
20
SYMBOL
D0 to D7
CLOCK
SC
S0, S1, S2
G1, G2
G3
W
Y
GND
V
CC
NAME AND FUNCTION
Data Inputs
Clock Input (LOW to
HIGH, Edge-triggered)
Latch Enable Input
(Active LOW)
Select Inputs
Output Enable Inputs
(Active LOW)
Output Enable Inputs
(Active HIGH)
3 State Multiplexer Output
(Active LOW)
3 State Multiplexer Output
(Active HIGH)
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL
ABSOLUTE MAXIMUM RATING
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
or I
GND
P
D
T
stg
T
L
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Source Sink Current Per Output Pin
DC V
CC
or Ground Current
Power Dissipation
Storage Temperature
Lead Temperature (10 sec)
Parameter
Value
-0.5 to +7
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+ 0.5
±
20
±
20
±
35
±
70
500 (*)
-65 to +150
300
Unit
V
V
V
mA
mA
mA
mA
mW
o
o
C
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW:
≅
65
o
C derate to 300 mW by 10mW/
o
C: 65
o
C to 85
o
C
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
T
op
t
r
, t
f
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature:
M54HC
Series
M74HC
Series
Input Rise and Fall Time
Parameter
Value
2 to 6
0 to V
CC
0 to V
CC
-55 to +125
-40 to +85
0 to 1000
0 to 500
0 to 400
Unit
V
V
V
C
C
ns
o
o
V
CC
= 2 V
V
CC
= 4.5 V
V
CC
= 6 V
4/12
PCB Design
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