器件名称: 74HCT640PW
功能描述: Octal bus transceiver; 3-state; inverting
文件大小: 47.05KB 共6页
简 介:INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications The IC06 74HC/HCT/HCU/HCMOS Logic Package Information The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT640 Octal bus transceiver; 3-state; inverting
Product specication File under Integrated Circuits, IC06 March 1988
Philips Semiconductors
Product specication
Octal bus transceiver; 3-state; inverting
FEATURES Octal bidirectional bus interface Inverting 3-state outputs Output capability: bus driver ICC category: MSI GENERAL DESCRIPTION
74HC/HCT640
The 74HC/HCT640 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/HCT640 are octal transceivers featuring inverting 3-state bus compatible outputs in both send and receive directions. The “640” features an output enable (OE) input for easy cascading and a send/receive (DIR) for direction control. OE controls the outputs so that the buses are effectively isolated. The “640” is similar to the “245” but has inverting outputs.
QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH PARAMETER propagation delay An to Bn; Bn to An input capacitance input/output capacitance power dissipation capacitance per transceiver notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 9 HCT 9 ns UNIT
CI CI/O CPD Notes
3.5 10 35
3.5 10 35
pF pF pF
1. ……