74ls40 4输入双与非缓冲器
- 格式：pdf
- 大小：72.08 KB
- 文档页数：3
5-51FAST AND LS TTL DATADUAL 4-INPUT NAND BUFFER
14131211109
123456V
CC
8
7
GNDGUARANTEED OPERATING RANGES
SymbolParameterMinTypMaxUnit
V
CCSupply Voltage54
744.5
4.755.0
5.05.5
5.25V
T
AOperating Ambient Temperature Range54
74–55
025
25125
70°C
I
OHOutput Current — High54, 74–1.2mA
I
OLOutput Current — Low54
7412
24mA
5-52
FAST AND LS TTL DATASN54/74LS40
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
SymbolParameterMinTypMaxUnitTest Conditions
V
IHInput HIGH Voltage2.0VGuaranteed Input HIGH Voltage for
All Inputs
V540.7
Guaranteed Input LOW Voltage for
ILInput LOW Voltage
740.8V
All Inputs
V
IKInput Clamp Diode Voltage–0.65–1.5VV
CC = MIN, I
IN = –18 mA
V542.53.5V
V
OHOutput HIGH Voltage
742.73.5VCC = MIN, I
OH = MAX, V
IN = V
IH
or V
IL per Truth Table
V54,740.250.4VI
OL = 12 mAV
CC = V
CC MIN,
OLOutput LOW Voltage
740.350.5VI
OL = 24 mAV
IN = V
IL or V
IH
per Truth Table
I20µAV
CC = MAX, V
IN = 2.7 V
IHInput HIGH Current
0.1mAV
CC = MAX, V
IN = 7.0 V
I
ILInput LOW Current–0.4mAV
CC = MAX, V
IN = 0.4 V
I
OSShort Circuit Current (Note 1)–30–130mAV
CC = MAX
I
CCPower Supply Current
Total, Output HIGH1.0
V
Total, Output LOW
6.0mA
CC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T
A = 25°C)
Limits
SymbolParameterMinTypMaxUnitTest Conditions
t
PLHTurn-Off Delay, Input to Output1224ns
V
t
PHLTurn-On Delay, Input to Output1224nsCC = 5.0 V, R
L = 667 Ω
C
L = 45 pF
