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HD74HC21

Hitachi Semiconductor
Part Number HD74HC21
Manufacturer Hitachi Semiconductor
Description Dual 4-input AND Gates
Published Mar 23, 2005
Detailed Description HD74HC21 Dual 4-input AND Gates Features • • • • • High Speed Operation: tpd = 11 ns typ (CL = 50 pF) High Output Curre...
Datasheet PDF File HD74HC21 PDF File

HD74HC21
HD74HC21

Overview
HD74HC21 Dual 4-input AND Gates Features • • • • • High Speed Operation: tpd = 11 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 1B NC 1C 1D 1Y GND 1 2 3 4 5 6 7 (Top view) 14 VCC 13 2D 12 2C 11 NC 10 2B 9 8 2A 2Y HD74HC21 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.
5 1.
35 1.
8 — — — — — 0.
1 0.
1 0.
1 0.
33 0.
33 ±1.
0 10 µA µA I OL = 4 mA I OL = 5.
2 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –4 mA I OH = –5.
2 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.
0 4.
5 6.
0 1.
5 — 3.
15 — 4.
2 — — — — — — — — — — 0.
5 1.
5 3.
15 4.
2 — VIL 2.
0 4.
5 6.
0 1.
35 — 1.
8 — 1.
9 4.
4 5.
9 4.
13 5.
63 — — — Output voltage VOH 2.
0 4.
5 6.
0 4.
5 6.
0 1.
9 2.
0 — 4.
4 4.
5 — 5.
9 6.
0 — 4.
18 — 5.
68 — — — — — — — — — — VOL ...


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