74HCT7540 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

74HCT7540

Octal Schmitt trigger buffer/line driver; 3-state; inverting

Philips Electronics 

Philips Semiconductors

Octal Schmitt trigger buffer/line driver;

3-state; inverting

TRANSFER CHARACTERISTIC WAVEFORMS

Product specification

74HC/HCT7540

Fig.6 Transfer characteristic.

AC WAVEFORMS

Fig.7 Waveforms showing the definition of VT+,

VT− and VH.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.8 Waveforms showing the input (An) to output (Yn) propagation delays and the output transition times.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.9 Waveforms showing the 3-state enable and disable times.

PACKAGE OUTLINES

See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.

December 1990

7

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