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[China]
Address: Room 36B1-B2, Building C, Electronics Science & Technology Building Shennan Mid-Road, Shenzhen China
Contact name:Sharon Yang
Anterwell Technology Ltd. |
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Triple 3-input NOR gate 74HC/HCT27
FEATURES
• Output capability: standard
• ICC category: SSI
GENERAL DESCRIPTION
The 74HC/HCT27 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. 7A. The 74HC/HCT27 provide the 3-input NOR function.
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 × VCC2 × fo) = sum of outputs CL = output load capacitance in pF VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC − 1.5 V
| SYMBOL | PARAMETER | CONDITIONS | TYPICAL
| UNIT | |
| HC | HCT | ||||
| tPHL/ tPLH | propagation delay nA, nB, nC to nY | CL = 15 pF; VCC = 5 V | 8 | 10 | ns |
| CI | input capacitance | 3.5 | 3.5 | pF | |
| CPD | power dissipation capacitance per gate | notes 1 and 2 | 24 | 30 | pF |
AC WAVEFORMS
