參數(shù)資料
型號: SN54LS148J
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS
中文描述: LS SERIES, 8-BIT ENCODER, CDIP16
封裝: 620-09
文件頁數(shù): 4/7頁
文件大小: 231K
代理商: SN54LS148J
5-248
FAST AND LS TTL DATA
SN54/74LS147
SN54/74LS148
SN54/74LS748
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°
C
IOH
IOL
Output Current — High
54, 74
–0.4
mA
Output Current — Low
54
74
4.0
8.0
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
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
74
0.8
VIK
Input Clamp Diode Voltage
–0.65
–1.5
V
VCC = MIN, IIN = –18 mA
VOH
Output HIGH Voltage
54
2.5
3.5
V
or VIL per Truth Table
74
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
per Truth Table
74
0.35
0.5
V
IOL = 8.0 mA
VIN = VIL or VIH
IIH
Input HIGH Current
All Others
Input 0 (LS748)
Inputs 1–7 (LS148)
Inputs 1–7 (LS748)
20
40
40
60
μ
A
VCC = MAX, VIN = 2.7 V
All Others
Input 0 (LS748)
Inputs 1–7 (LS148)
Inputs 1–7 (LS748)
0.1
0.2
0.2
0.3
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
All Others
Input 0 (LS748)
Inputs 1–7 (LS148)
Inputs 1–7 (LS748)
–0.4
–0.8
–0.8
–1.2
mA
VCC = MAX, VIN = 0.4 V
IOS
ICCH
Short Circuit Current (Note 1)
–20
–100
mA
VCC = MAX
VCC = MAX, All Inputs = 4.5 V
VCC = MAX, Inputs 7 & E1 = GND
All Other Inputs = 4.5 V
Power Supply Current Output HIGH
17
mA
ICCL
Output LOW
20
mA
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
相關(guān)PDF資料
PDF描述
SN54LS748J Data Selector/Multiplexer 2-Input Q; Package: TSSOP-16; No of Pins: 16; Container: Tape and Reel; Qty per Container: 2500
SN74LS748D 500mA, 8V,±4% Tolerance, Negative Voltage Regulator, Ta = -40°C to +125°C; Package: TO-220, SINGLE GAUGE; No of Pins: 3; Container: Rail; Qty per Container: 50
SN74LS748N 500mA, 8V,±4% Tolerance, Negative Voltage Regulator, Ta = 0°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Rail; Qty per Container: 75
SN74LS147D 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS
SN74LS147N 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS
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