參數(shù)資料
型號(hào): HD74BC540A
廠商: Hitachi,Ltd.
英文描述: Octal Buffers/Line Drivers With 3 State Outputs(三態(tài)輸出的八緩沖器/線驅(qū)動(dòng)器)
中文描述: 八路緩沖器/線路驅(qū)動(dòng)器,三態(tài)輸出(三態(tài)輸出的八緩沖器/線驅(qū)動(dòng)器)
文件頁(yè)數(shù): 5/8頁(yè)
文件大小: 38K
代理商: HD74BC540A
HD74BC540A
5
Switching Characteristics
(C
L
= 50 pF)
Ta = 25
°
C
V
CC
= 5.0 V
Min
Ta = –40 to +85
°
C
V
CC
= 5.0 V
±
10
Min
Item
Symbol
Max
Max
Unit
Test Conditions
Propagation delay time
t
PLH
t
PHL
t
ZH
t
ZL
t
HZ
t
LZ
C
IN
C
O
3.0
6.0
3.0
7.0
ns
See under figure
3.0
6.0
3.0
7.0
Output enable time
3.0
9.0
3.0
11.0
ns
3.0
9.0
3.0
11.0
Output disable time
3.0
8.0
3.0
10.0
ns
3.0
8.0
3.0
10.0
Input capacitance
3.0(Typ)
pF
V
IN
= V
CC
or GND
V
O
= V
CC
or GND
Output capacitance
15.0(Typ)
pF
Test circuit
C =
50 pF
Input
V
CC
Output
OPEN
7V
500
50
Scope
G
2
G
1
A1
Y1
V
CC
Pulse
Generator
Z = 50
S
450
*3
Notes:
1.
2.
3.
C
L
includes probe and jig capacitance.
A2-Y2 to A8-Y8 are identical to above load circuit.
Open: t
PLH
, t
PHL
, t
ZH
, t
HZ
7V: t
ZL
, t
LZ
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