Standard ICs
Quad 2-input NOR gate
BU4001B / BU4001BF
The BU4001B and BU4001BF are 2-input positive logic NOR gates, each with four built-in circuits. A buffer achieved
by an inverter added at the gate output improves the input / output propagation characteristic and minimizes variation
in the propagation time caused by increase of the load capacitance.
鈥?/div>
Features dissipation.
1) Low power
2) Wide range of operating power supply voltage.
3) High input impedance.
4) High fan-out.
5) Direct drive of 2 L-TTL inputs and 1 LS-TTL input.
鈥?/div>
Block diagram
A
1
1
14 V
DD
B
1
2
13 A
4
O
1
O
2
3
4
12 B
4
11 O
4
B
2
5
10 O
3
A
2
V
SS
6
7
9
B
3
8
A
3
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Absolute maximum ratings (V
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Input voltage
SS
= 0V, Ta = 25擄C)
Symbol
V
DD
Pd
Topr
Tstg
V
IN
Limits
鈥?0.3 ~ + 18
1000 (DIP), 450 (SOP)
鈥?40 ~ + 85
鈥?55 ~ + 150
鈥?0.3 ~ V
DD
+ 0.3
Unit
V
mW
擄C
擄C
V
1
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