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SN54LS348J 数据表(PDF) 3 Page - Motorola, Inc

部件名 SN54LS348J
功能描述  8-INPUT PRIORITY ENCODERS WITH 3-STATE OUTPUTS
PDF  6 Pages
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制造商  MOTOROLA [Motorola, Inc]
网页  http://www.freescale.com
标志 MOTOROLA - Motorola, Inc

SN54LS348J 数据表(HTML) 3 Page - Motorola, Inc

  SN54LS348J Datasheet HTML 1Page - Motorola, Inc SN54LS348J Datasheet HTML 2Page - Motorola, Inc SN54LS348J Datasheet HTML 3Page - Motorola, Inc SN54LS348J Datasheet HTML 4Page - Motorola, Inc SN54LS348J Datasheet HTML 5Page - Motorola, Inc SN54LS348J Datasheet HTML 6Page - Motorola, Inc  
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5-501
FAST AND LS TTL DATA
SN54/74LS348
• SN54/74LS848
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
54
0.7
V
Guaranteed Input LOW Voltage for
All Inputs
VIL
Input LOW Voltage
74
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
– 0.65
– 1.5
V
VCC = MIN, IIN = – 18 mA
VOH
Output HIGH Voltage
A0, A1, A2
54, 74
2.4
3.1
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOH
EO, GS
54
2.5
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
EO, GS
74
2.7
3.5
V
VOL
Output LOW Voltage
EO, GS
54, 74
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
VOL
Output LOW Voltage
EO, GS
74
0.35
0.5
V
IOL = 8.0 mA
VIN = VIL or VIH
per Truth Table
VOL
Output LOW Voltage
A0, A1, A2
54, 74
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
VOL
Output LOW Voltage
A0, A1, A2
74
0.35
0.5
V
IOL = 24 mA
VIN = VIL or VIH
per Truth Table
IOZH
Output Off Current HIGH
20
µA
VCC = MAX, VOUT = 2.7 V
IOZL
Output Off Current LOW
–20
µA
VCC = MAX, VOUT = 0.4 V
IIH
Input HIGH Current
Input 0, EI — LS348
20
µA
VCC = MAX, VIN = 2.7 V
IIH
Input 0 — LS848
40
µA
VCC = MAX, VIN = 2.7 V
IIH
Other — LS348
Other — LS848
40
60
µA
µA
CC = MAX, VIN = 2.7 V
IIH
Input HIGH Current
Input 0, EI — LS348
0.1
mA
VCC = MAX, VIN = 7.0 V
Input 0 — LS848
0.2
mA
VCC = MAX, VIN = 7.0 V
Other — LS348
Other — LS848
0.2
0.3
mA
mA
CC = MAX, VIN = 7.0 V
IIL
Input LOW Current
Input 0, EI — LS348
– 0.4
mA
VCC = MAX, VIN = 0.4 V
IIL
Input 0 — LS848
– 0.8
mA
VCC = MAX, VIN = 0.4 V
IL
Other — LS348
Other — LS848
– 0.8
– 1.2
mA
mA
CC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
EO, GS
– 20
– 120
mA
VCC = MAX
IOS
EO, GS
A0, A1, A2
– 30
– 130
mA
VCC = MAX
ICC
Power Supply Current
Total, Output HIGH
12
23
mA
VCC = MAX
All Inputs and Outputs Open
ICC
Total, Output LOW
13
25
mA
VCC = MAX, Inputs 7, EI = GND
All Others Open
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.



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