參數(shù)資料
型號(hào)： SCAN18373T
廠商： National Semiconductor Corporation
英文描述： Transparent Latch with TRI-STATE Outputs(帶三態(tài)輸出的透明鎖存器)
中文描述： 透明鎖存器與三態(tài)輸出（帶三態(tài)輸出的透明鎖存器）
文件頁(yè)數(shù)： 11/14頁(yè)
文件大?。?/td> 170K
代理商： SCAN18373T
AC Electrical Characteristics
(Continued)
Scan Test Operation
Symbol
Parameter
V
CC
(V)
(Note 10)
Military
Units
Fig.
No.
T
A
=55C to +125C
C
L
= 50 pF
Min
6.5
6.5
Max
26.2
26.2
t
PZL
,
t
PZH
Propagation Delay
TCK to Data Out
during Update-IR
State
Propagation Delay
TCK to Data Out
during Test Logic
Reset State
5.0
ns
t
PZL
,
t
PZH
7.0
27.4
5.0
ns
7.0
27.4
Note 10:
Voltage Range 5.0 is 5.0V
±
0.5V.
All propagation delays involving TCK are measured from the falling edge of TCK.
AC Operating Requirements
Scan Test Operation
Symbol
Parameter
V
CC
(V)
(Note 11)
Military
Units
Fig.
No.
T
A
= 55C to +125C
C
L
= 50 pF
Guaranteed Minimum
3.0
t
S
Setup Time,
Data to TCK (Note 13)
Hold Time,
TCK to Data (Note 13)
Setup Time, H or L
AOE
1
, BOE
1
to TCK (Note 15)
Hold Time, H or L
TCK to AOE
1
, BOE
1
(Note 15)
Setup Time, H or L
Internal AOE, BOE,
to TCK (Note 14)
Hold Time, H or L
TCK to Internal
AOE, BOE (Note 14)
Setup Time
ALE, BLE (Note 12) to TCK
Hold Time
TCK to ALE, BLE (Note 12)
Setup Time, H or L
TMS to TCK
Hold Time, H or L
TCK to TMS
Setup Time, H or L
TDI to TCK
Hold Time, H or L
TCK to TDI
Pulse Width TCK
5.0
ns
t
H
5.0
5.5
ns
t
S
5.0
3.0
ns
t
H
5.0
4.5
ns
t
S
5.0
3.0
ns
t
H
5.0
3.0
ns
t
S
5.0
3.0
ns
t
H
5.0
4.0
ns
t
S
5.0
8.0
ns
t
H
5.0
2.0
ns
t
S
5.0
4.0
ns
t
H
5.0
4.5
ns
t
W
5.0
H
L
12.0
5.0
25
ns
f
max
Maximum TCK
Clock Frequency
5.0
MHz
www.national.com
11
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