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HD74BC244A Datasheet(PDF) 5 Page - Hitachi Semiconductor

Part # HD74BC244A
Description  Octal Buffers/Line Drivers With 3 State Outputs
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HD74BC244A Datasheet(HTML) 5 Page - Hitachi Semiconductor

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HD74BC244A
5
Switching Test Method (C
L = 50 pF)
Ta = 25
°C
V
CC = 5.0 V
Ta = –40 to 85
°C
V
CC = 5.0 V ±10%
Item
Symbol
Min
Max
Min
Max
Unit
Test Conditions
Propagation delay time
t
PLH
3.0
6.0
3.0
7.0
ns
See under figure
t
PHL
3.0
6.0
3.0
7.0
Output enable time
t
ZH
3.0
8.0
3.0
10.0
ns
t
ZL
3.0
8.0
3.0
10.0
Output disable time
t
HZ
3.0
7.0
3.0
9.0
ns
t
LZ
3.0
7.0
3.0
9.0
Input capacitanse
C
IN
3.0(Typ)
pF
V
IN = VCC or GND
Output capacitance
C
O
15.0(Typ)
pF
V
O = VCC or GND
Test Circuit
VCC
1A1
G
VCC
Input
Pulse Generator
Zout = 50 Ω
OPEN
7 V
C =
50 pF
L
50
Scope
500
450
Output
1A2
1A3
1A4
Same as above
load circuit
1Y1
1Y2
1Y3
1Y4
Output
*3
Same as above
load circuit
Same as above
load circuit
Notes:
1.
C
L includes probe and jig capacitance.
2.
2
G, 2A1-2A4 to 2Y1-2Y4 are identical to above load circuit.
2.
Open: t
PLH, t PHL, t ZH, t HZ
7 V: t
ZL, t LZ


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