參數(shù)資料
型號: SN54LS77J
廠商: MOTOROLA INC
元件分類: 鎖存器
英文描述: LS SERIES, DUAL HIGH LEVEL TRIGGERED D LATCH, TRUE OUTPUT, CDIP14
封裝: 632-08
文件頁數(shù): 3/4頁
文件大小: 70K
代理商: SN54LS77J
5-3
FAST AND LS TTL DATA
SN54/74LS77
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Sb l
P
Limits
Ui
T
C
di i
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
VIL
Input LOW Voltage
74
0.8
V
pg
All Inputs
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
VCC = MIN, IOH = MAX, VIN = VIH
VOH
Output HIGH Voltage
74
2.7
3.5
V
CC
, OH
,
IN
IH
or VIL per Truth Table
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN =VIL or VIH
VOL
Output LOW Voltage
74
0.35
0.5
V
IOL = 8.0 mA
VIN = VIL or VIH
per Truth Table
IIH
Input HIGH Current
D Input
E Input
20
80
A
VCC = MAX, VIN = 2.7 V
IIH
Input HIGH Current
D Input
E Input
0.1
0.4
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
D Input
E Input
– 0.4
–1.6
mA
VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
–20
–100
mA
VCC = MAX
ICC
Power Supply Current
13
mA
VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Sb l
P
Limits
Ui
T
C
di i
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
tPLH
tPHL
Propagation Delay, Data to Q
11
9.0
19
17
ns
VCC = 5.0 V
tPLH
tPHL
Propagation Delay, Enable to Q
10
18
ns
CC
CL = 15 pF
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