MC54F139J 查看數據表（PDF） - Motorola => Freescale
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MC54F139J Datasheet PDF : 3 Pages
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MC54/74F139
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
Max
Unit
54, 74
4.5
5.0
5.5
V
54
–55
25
125
°C
74
0
25
70
54, 74
–1.0
mA
54, 74
20
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage
VIK
Input Clamp Diode Voltage
–1.2
V
VCC = MIN, IIN = –18 mA
VOH
Output HIGH Voltage
54, 74 2.5
V
IOH = –1.0 mA
VCC = 4.50 V
74
2.7
V
IOH = –1.0 mA
VCC = 4.75 V
VOL
Output LOW Voltage
0.5
V
IOL = 20 mA
VCC = MIN
IIH
Input HIGH Current
20
µA VCC = MAX, VIN = 2.7 V
0.1
mA VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
–0.6 mA VCC = MAX, VIN = 0.5 V
IOS
Output Short Circuit Current (Note 2)
-60
–150 mA VCC = MAX, VOUT = 0 V
ICC
Power Supply Current
20
mA VCC = MAX
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
Symbol
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay,
Address to Output
Enable to Output
54/74F
54F
74F
TA = +25°C
TA = -55°C to +125°C
TA = 0°C to 70°C
VCC = +5.0 V
VCC = 5.0 V ±10%
VCC = 5.0 V ±10%
CL = 50 pF
CL = 50 pF
CL = 50 pF
Min
Max
Min
Max
Min
Max
Unit
3.5
7.0
2.5
12.0
3.0
8.5
ns
3.5
8.0
3.5
9.5
3.5
9.0
3.5
7.0
3.0
9.0
3.5
8.0
ns
2.5
6.5
2.5
8.0
2.5
7.5
FUNCTIONAL DESCRIPTION
The F139 is a high speed dual 1-of-4 decoder/demultiplexer
fabricated with the Schottky barrier diode process. The device
has two independent decoders, each of which accepts two
binary weighted inputs (AO, A1) and provide four mutually ex-
clusive active LOW outputs (O0-O3). Each decoder has an ac-
tive LOW Enable (E). When E is HIGH all outputs are forced
HIGH. The enable can be used as the data input for a 4-output
demultiplexer application.
Each half of the F139 generates all four miniterms of two
variables. These four miniterms are useful in some applica-
tions, replacing multiple gate functions as shown in Figure 1,
and thereby reducing the number of packages required in a
logic network.
FAST AND LS TTL DATA
4-57
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