74HC640 查看數據表（PDF） - NXP Semiconductors.
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74HC640 Datasheet PDF : 6 Pages
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Philips Semiconductors
Octal bus transceiver; 3-state; inverting
AC WAVEFORMS
Product specification
74HC/HCT640
(1) HC : VM = 50%; VI = GND to VCC.
HCT: VM = 1.3 V; VI = GND to 3 V.
Fig.5 Waveforms showing the input (An, Bn) to
output (Bn, An) 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.6 Waveforms showing the 3-state enable and
disable times.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
March 1988
6
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