MOTOROLA MC74F538DW

MC54/74F538
1-OF-8 DECODER
WITH 3-STATE OUTPUTS
The MC54 / 74F538 decoder/demultiplexer accepts three Address (A0 – A2)
input signals and decodes them to select one of eight mutually exclusive
outputs. A polarity control input (P) determines whether the outputs are active
LOW or active HIGH. A HIGH Signal on either of the active LOW Output
Enable (OE) inputs forces all outputs to the high impedance state. Two active
HIGH and two active LOW input enables are available for easy expansion to
1-of-32 decoding with four packages, or for data demultiplexing to 1-of-8 or
1-of-16 destinations.
•
•
•
•
•
Output Polarity Control
Data Demultiplexing Capability
Multiple Enables for Expansion
3-State Outputs
ESD Protection > 4000 Volts
1-OF-8 DECODER
WITH 3-STATE OUTPUTS
FAST SCHOTTKY TTL
20
1
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC O3
20
19
J SUFFIX
CERAMIC
CASE 732-03
O4
A2
E1
E2
E3
E4
P
O7
18
17
16
15
14
13
12
11
N SUFFIX
PLASTIC
CASE 738-03
20
1
1
2
3
O2
O1
O0
4
5
OE1 OE2
DW SUFFIX
SOIC
CASE 751D-03
20
6
7
8
9
A0
A1
O5
O6 GND
10
1
ORDERING INFORMATION
MC54FXXXJ
Ceramic
MC74FXXXN
Plastic
MC74FXXXDW SOIC
LOGIC DIAGRAM
A2
A1
A0
E1
E2
E3
E4
LOGIC SYMBOL
16
15
14
P
13
4
5
OE1
OE2
O0
O1
O2
O3
O4
O5
O6
O7
Please note that this diagram is provided only for the understanding of logic operations and
should not be used to estimate propagation delays.
FAST AND LS TTL DATA
4-206
12
6
7
17
P
A0
A1 A2
E1
E2
E3
E4
OE1
OE2
O0 O1 O2 O3 O4 O5 O6 O7
3
2
1 14 18
VCC = PIN 20
GND = PIN 10
8
9
11
MC54/74F538
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
54, 74
4.5
5.0
5.5
V
54
– 55
25
125
74
0
25
70
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
54, 74
– 3.0
mA
IOL
Output Current — Low
54, 74
24
mA
°C
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Min
Parameter
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VIK
Input Clamp Diode Voltage
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
IOZH
Output OFF Current — HIGH
IOZL
Output OFF Current — LOW
IIH
Input HIGH Current
IIL
Input LOW Current
IOS
Output Short Circuit Current (Note 2)
ICCZ
Power Supply Current
Typ
Max
Unit
2.0
Test Conditions
V
Guaranteed Input HIGH Voltage
0.8
V
Guaranteed Input LOW Voltage
– 1.2
V
VCC = MIN, IIN = – 18 mA
54, 74
2.4
V
IOH = – 3.0 mA
VCC = 4.5 V
74
2.7
V
IOH = – 3.0 mA
VCC = 4.75 V
0.5
V
IOL = 24 mA
VCC = MIN
50
µA
VOUT = 2.7 V
VCC = MAX
– 50
µA
VOUT = 0.5 V
VCC = MAX
20
µA
VCC = MAX, VIN = 2.7 V
0.1
mA
VCC = MAX, VIN = 7.0 V
– 60
37
– 0.6
mA
VCC = MAX, VIN = 0.5 V
–150
mA
VCC = MAX, VOUT = 0 V
56
mA
VCC = MAX: A0 – A2, E1, E2 = GND
OE1, OE2, E3, E4, P = HIGH
AC CHARACTERISTICS
Symbol
Parameter
54 / 74F
54F
74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
TA = –55 to +125′C
VCC = 5.0 V ± 10%
CL = 50 pF
TA = 0 to 70°C
VCC = 5.0 V ± 10%
CL = 50 pF
Min
Typ
Max
Min
Max
Min
Max
tPLH
tPHL
Propagation Delay
An to On
4.0
3.0
11
7.5
13
12.5
4.0
3.0
17
16.5
4.0
3.0
14
13.5
tPLH
tPHL
Propagation Delay
E1 or E2 to On
4.0
3.0
8.5
6.5
12
12
3.5
3.0
15
14.5
3.5
3.0
13
12.5
tPLH
tPHL
Propagation Delay
E3 or E4 to On
6.5
4.0
11
10
12.5
12.5
5.5
3.5
15.5
15
5.5
3.5
13.5
13
tPLH
tPHL
Propagation Delay
P to On
4.5
3.5
11.5
11
15
11.5
4.0
3.5
18.5
12.5
4.0
3.5
16.5
12
tPZH
tPZL
Output Enable Time
OE1 or OE2 to On
2.5
4.0
5.5
9.0
9.5
13.5
2.0
4.0
13
16
2.0
4.0
11
15
tPHZ
tPLZ
Output Disable Time
OE1 or OE2 to On
1.0
1.0
4.0
5.0
6.0
8.5
1.0
1.0
8.0
10.5
1.0
1.0
7.0
9.5
Unit
ns
ns
ns
FAST AND LS TTL DATA
4-207
MC54/74F538
TRUTH TABLE
INPUTS
OUTPUTS
FUNCTION
OE1
OE2
E1
E2
E3
E4
A2
A1
A0
O0
O1
O2
O3
O4
O5
O6
O7
High
Impedance
H
X
X
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Disable
L
L
L
L
L
L
L
L
H
X
X
X
X
H
X
X
X
X
L
X
X
X
X
L
X
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
H
L
L
L
L
H
L
L
L
L
H
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
H
L
L
L
L
H
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
Active HIGH
Output
(P = L)
Active LOW
Output
(P = H)
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
FAST AND LS TTL DATA
4-208
Outputs Equal P Input