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Part Number: SN54HC21
Description: These devices contain two independent 4-input AND gates. They perform the Boolean function Y = A ̶...


Description: These devices contain two independent 4-input AND gates. They perform the Boolean function Y = A ̶...
These devices contain two independent 4-input AND gates. They perform the Boolean function Y = A • B • C • D or Y= A+B+C+D in positive logic. The SN54HC21 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74HC21 is characterized for operation from 40°C to 85°C.
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Package thermal impedance, qJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages, which use a trace length of zero.
SN54HC21
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