HIT HD74HC51 Datasheet
HD74HC51
2-wide 2-input, 2-wide 3-input AND-OR-INVERT Gate
Features
• High Speed Operation: tpd = 10.5 ns typ (CL = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 1 µA max (Ta = 25°C)
Pin Arrangement
1A
2A
2B
2C
2D
2Y
GND
V
1
2
3
4
5
6
7
(Top view)
14
13
12
11
10
CC
1C
1B
1F
1E
9
1D
8
1Y
HD74HC51
DC Characteristics
Ta = –40 to
Ta = 25°C
Item Symbol V
Input voltage V
IH
(V) Min Typ Max Min Max Unit Test Conditions
CC
2.0 1.5 — — 1.5 — V
4.5 3.15 — — 3.15 —
6.0 4.2 — — 4.2 —
V
IL
2.0 — — 0.5 — 0.5 V
4.5 — — 1.35 — 1.35
6.0 — — 1.8 — 1.8
Output voltage V
OH
2.0 1.9 2.0 — 1.9 — V Vin = VIH or VILIOH = –20 µA
4.5 4.4 4.5 — 4.4 —
6.0 5.9 6.0 — 5.9 —
4.5 4.18 — — 4.13 — IOH = –4 mA
6.0 5.68 — — 5.63 — IOH = –5.2 mA
V
OL
2.0 — 0.0 0.1 — 0.1 V Vin = VIH or VILIOL = 20 µA
4.5 — 0.0 0.1 — 0.1
6.0 — 0.0 0.1 — 0.1
4.5 — — 0.26 — 0.33 IOL = 4 mA
6.0 — — 0.26 — 0.33 IOL = 5.2 mA
Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND
Quiescent supply
I
CC
6.0 — — 1.0 — 10 µA Vin = VCC or GND, Iout = 0 µA
current
+85°C
2
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
Ta = 25°C
Item Symbol V
Propagation delay t
PLH
(V) Min Typ Max Min Max Unit Test Conditions
CC
2.0 — — 110 — 140 ns
time 4.5 — 11 22 — 28
6.0 — — 19 — 24
t
PHL
2.0 — — 110 — 140 ns
4.5 — 10 22 — 28
6.0 — — 19 — 24
Output rise time t
TLH
2.0 — — 75 — 95 ns
4.5 — 5 15 — 19
6.0 — — 13 — 16
Output fall time t
THL
2.0 — — 75 — 95 ns
4.5 — 5 15 — 19
6.0 — — 13 — 16
Input capacitance Cin — — 5 10 — 10 pF
+85°C
HD74HC51
3
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