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參數(shù)資料
| 型號： | 74LS77 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 4-BIT D LATCH LOW POWER SCHOTTKY |
| 中文描述： | 4位D鎖存低功耗肖特基 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大小： | 71K |
| 代理商： | 74LS77 |
5-2
FAST AND LS TTL DATA
SN54/74LS75
LOGIC SYMBOLS
VCC = PIN 5
GND = PIN 12
2
3
6
7
16
1 15 14 10 11 9
8
D0
D1
D2
D3
13
4
E0–1
E2–3
Q0
Q0Q1
Q2
Q3
Q1
Q2
Q3
SN54/74LS75
VCC = PIN 4
GND = PIN 11
NC = PIN 7, 10
1
2
5
6
14
13
9
8
D0
D1
D2
D3
12
3
E0–1
E2–3
Q0
Q3
Q1
Q2
SN54/74LS77
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Symbol
b l
Parameter
Limits
U i
Unit
Test Conditions
di i
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
VCC = MIN, IOH = MAX, VIN
,OH
or VIL per Truth Table
74
2.7
3.5
V
IH
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN= VILor VIH
VIN = VIL or VIH
per Truth Table
74
0.35
0.5
V
IOL = 8.0 mA
IIH
Input HIGH Current
D Input
E Input
20
80
μ
A
VCC = MAX, VIN = 2.7 V
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
ICC
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
Short Circuit Current (Note 1)
–20
–100
mA
VCC = MAX
VCC = MAX
Power Supply Current
12
mA
AC CHARACTERISTICS
(TA = 25
°
C, VCC = 5.0 V)
Symbol
b l
Parameter
Limits
U i
Unit
Test Conditions
di i
Min
Typ
Max
tPLH
tPHL
Propagation Delay, Data to Q
15
9.0
27
17
ns
VCC = 5.0 V
CL = 15 pF
5 0 V
tPLH
tPHL
Propagation Delay, Data to Q
12
7.0
20
15
ns
tPLH
tPHL
Propagation Delay, Enable to Q
15
14
27
25
ns
tPLH
tPHL
Propagation Delay, Enable to Q
16
7.0
30
15
ns
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相關(guān)代理商/技術(shù)參數(shù) |
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