产品介绍

M74HCT640 Octal Bus Transceiver (3-State/Inv.)

The M74HCT640 is an advanced high-speed CMOS OCTAL BUS TRANSCEIVER (3-STATE) fabricated with silicon gate C2MOS technology.

This IC is intended for two-way asynchronous communication between data buses, and the direction of data transmission is determined by DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated.

All inputs are equipped with protection circuits against static discharge and transient excess voltage.

All floating bus terminals during High Z State must be held HIGH or LOW

技术特性

• HIGH SPEED:
  • tPD = 13ns (TYP.) at VCC = 4.5V
• LOW POWER DISSIPATION:
  • ICC = 4µA(MAX.) at TA=25 °C
• COMPATIBLE WITH TTL OUTPUTS :
  • VIH = 2V (MIN.) VIL = 0.8V (MAX)
• SYMMETRICAL OUTPUT IMPEDANCE:
  • |IOH| = IOL = 6mA (MIN)
• BALANCED PROPAGATION DELAYS:
  • tPLH tPHL
• PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 640

M74HCT640 订购信息

DATASHEET