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74HCT132D View Datasheet(PDF) - Philips Electronics

Part NameDescriptionManufacturer
74HCT132D Quad 2-input NAND Schmitt trigger Philips
Philips Electronics Philips
74HCT132D Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Philips Semiconductors
Quad 2-input NAND Schmitt trigger
Product specification
Application information
The slow input rise and fall times cause additional power dissipation, this can be calculated using the following formula:
Pad = fi × (tr × ICCa + tf × ICCa) × VCC.
Pad = additional power dissipation (µW)
= input frequency (MHz)
= input rise time (ns); 10% 90%
= input fall time (ns); 10% 90%
ICCa = average additional supply current (µA)
Average ICCa differs with positive or negative input transitions, as shown in Figs 14 and 15.
Fig.14 Average ICC for HC Schmitt trigger devices;
linear change of Vi between 0.1 VCC to
0.9 VCC.
Fig.15 Average ICC for HCT Schmitt trigger
devices; linear change of Vi between
0.1 VCC to 0.9 VCC.
HC/HCT132 used in a relaxation oscillator circuit, see Fig.16.
HC: f = T-1-- 0----.-8---1-R-----C---
HCT: f = T-1-- 0----.-6----7-1----R-----C--
Fig.16 Relaxation oscillator using HC/HCT132.
Note to Application information
All values given are typical unless otherwise specified.
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
September 1993
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