器件名称:
74VHCT244A
功能描述:
Octal Buffer/Line Driver with 3-STATE Outputs
文件大小:
98.74KB 共8页
简 介:
74VHCT244A Octal Buffer/Line Driver with 3-STATE Outputs March 1997 Revised April 2005 74VHCT244A Octal Buffer/Line Driver with 3-STATE Outputs General Description The VHCT244A is an advanced high speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The VHCT244A is a non-inverting 3-STATE buffer having two active-LOW output enables. This device is designed to be used as 3-STATE memory address drivers, clock drivers, and bus oriented transmitter/ receivers. Protection circuits ensure that 0V to 7V can be applied to the input and output (Note 1) pins without regard to the supply voltage. These circuits prevent device destruction due to mismatched supply and input/output voltages. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. Note 1: Outputs in OFF-State Features s High Speed: tPD 5.9 ns (typ) at VCC 5V s Power down protection is provided on inputs and outputs s Low power dissipation: ICC 4 PA (max) @ TA 25qC s Pin and function compatible with 74HCT244 Ordering Code: Order Number 74VHCT244AM 74VHCT244ASJ 74VHCT244AMTC 74VHCT244AN Package Number M20B M20D MTC20 N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Thin Shrink Small Outline Pack……
