參數(shù)資料
型號: DM74LS299N
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: 8-Input Universal Shift/Storage Register with
中文描述: LS SERIES, 8-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDIP20
封裝: 0.300 INCH, PLASTIC, MS-001, DIP-20
文件頁數(shù): 4/6頁
文件大小: 65K
代理商: DM74LS299N
www.fairchildsemi.com
4
D
Electrical Characteristics
Over recommended operating free air temperature range (unless otherwise noted)
Note 2:
All typicals are at V
CC
=
5V, T
A
=
25
°
C.
Note 3:
Not more than one output should be shorted at a time, and the duration should not exceed one second.
Switching Characteristics
V
CC
=
+
5.0V, T
A
=
+
25
°
C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 2)
V
I
V
OH
Input Clamp Voltage
HIGH Level
Output Voltage
V
CC
=
Min, I
I
=
18 mA
V
CC
=
Min, I
OH
=
Max
V
IL
=
Max
V
CC
=
Min, I
OL
=
Max
V
IH
=
Min
I
OL
=
4 mA, V
CC
=
Min
V
CC
=
Max
V
I
=
7V
V
CC
=
Max, V
I
=
2.7V
1.5
V
Q0, Q7
I/O0–I/O7
2.7
2.4
3.4
V
V
OL
LOW Level
Output Voltage
0.35
0.5
V
0.25
0.4
I
I
Input Current @ Max
Input Voltage
HIGH Level
Inputs
Sn
Sn
0.1
0.2
40
mA
mA
μ
A
μ
A
mA
mA
I
IH
Input Current
LOW Level
Input Current
Inputs
Sn
Inputs
20
0.8
0.4
100
130
I
IL
V
CC
=
Max, V
I
=
0.4V
I
OS
Short Circuit
Output Current
V
CC
=
Max
(Note 3)
Q
0
, Q
7
I/O
0
–I/O
7
20
30
mA
I
CC
I
OZH
Supply Current
3-STATE Output Off
V
CC
=
Max, OE
=
4.5V
V
CC
=
Max
V
O
=
2.7V
V
CC
=
Max
V
O
=
0.4V
60
mA
40
μ
A
Current HIGH
3-STATE Output Off
Current Low
I
OZL
400
μ
A
Symbol
Parameter
R
L
=
2 k
C
L
=
15 pF
Units
Min
35
Max
f
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PHL
Maximum Input Frequency
Propagation Delay
CP to Q0 or Q7
MHz
26
28
ns
Propagation Delay
CP to I/O
n
Propagation Delay
25
35
ns
28
ns
MR to Q0 or Q7
Propagation Delay
MR to I/O
n
Output Enable Time
t
PHL
35
ns
t
PZH
t
PZL
t
PHZ
t
PLZ
18
25
ns
Output Disable Time
15
20
ns
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