參數(shù)資料
型號: SN74LS21D
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: 500mA, 8V,±2% Tolerance, Voltage Regulator, Ta = -40°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Rail; Qty per Container: 75
中文描述: LS SERIES, DUAL 4-INPUT AND GATE, PDSO14
封裝: SOIC-14
文件頁數(shù): 2/4頁
文件大小: 118K
代理商: SN74LS21D
5-60
FAST AND LS TTL DATA
SN54/74LS21
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
20
μ
A
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 0.4 V
VCC = MAX
0.1
mA
IIL
IOS
Input LOW Current
–0.4
mA
Short Circuit Current (Note 1)
–20
–100
mA
ICC
Power Supply Current
Total, Output HIGH
Total, Output LOW
2.4
mA
VCC = MAX
4.4
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
(TA = 25
°
C)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
tPLH
tPHL
Turn-Off Delay, Input to Output
8.0
15
ns
CL = 15 pF
Turn-On Delay, Input to Output
10
20
ns
VCC = 5.0 V
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PDF描述
SN74LS21N 500mA, 8V,±2% Tolerance, Voltage Regulator, Ta = -40°C to +125°C; Package: TO-220, SINGLE GAUGE; No of Pins: 3; Container: Rail; Qty per Container: 50
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SN74LS221D 500mA, 8V,±4% Tolerance, Voltage Regulator, Ta = -40°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Rail; Qty per Container: 75
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