Philips 74HCT21
The 74HC/HCT21 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. The 74HC/HCT21 provide the 4-input AND function.| Part No. | 74HCT21 |
|---|---|
| Datasheet | 74HCT21 Download |
| Manufacturer |  Philips |
| Description | Dual 4-input AND gate |
| Buy | Stock & Price |
FEATURES
● Output capability: standard● ICC category: SSI
GENERAL DESCRIPTION
74HC/HCT21 7A. The 74HC/HCT21 provide the 4-input AND function. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH CI CPD Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW): PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fO) where: fi = input frequency in MHz fo = output frequency in MHz CL = output load capacitance in pF VCC = supply voltage in V ∑ (CL × VCC2 × fo) = sum of outputs 2. For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC − 1.5 V ORDERING INFORMATION See “74HC/HCT/HCU/HCMOS Logic Package Information”. PARAMETER propagation delay nA, nB, nC, nD to nY input capacitance power dissipation capacitance per package notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 10 3.5 15 HCT 12 3.5 16 ns pF pF UNIT December 1990 2 Philips Semiconductors Product specification Dual 4-input AND gate PINDESCRIPTION
PIN NO. 1, 9 2, 10 3, 11 4, 12 5, 13 6, 8 7 14 SYMBOL 1A, 2A 1B, 2B n.c.
