器件名称:
74HCT640N
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. ……
