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参数资料
| 型号： | MC54F139J |
| 厂商： | MOTOROLA INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | DUAL 1-OF-4 DECODER FAST SHOTTKY TTL |
| 中文描述： | F/FAST SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDIP16 |
| 封装： | 620-09 |
| 文件页数： | 2/3页 |
| 文件大小： | 72K |
| 代理商： | MC54F139J |
4-57
FAST AND LS TTL DATA
MC54/74F139
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54, 74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
54
–55
25
125
°C
74
0
25
70
IOH
Output Current — High
54, 74
–1.0
mA
IOL
Output Current — Low
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
A
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
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%
CL = 50 pF
Symbol
Parameter
Min
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay,
3.5
7.0
2.5
12.0
3.0
8.5
ns
tPHL
Address to Output
3.5
8.0
3.5
9.5
3.5
9.0
tPLH
Enable to Output
3.5
7.0
3.0
9.0
3.5
8.0
ns
tPHL
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.
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