74VHC244 Octal Buffer/Line Driver with 3-STATE Outputs
November 1992 Revised April 2005
74VHC244 Octal Buffer/Line Dri...
74VHC244 Octal Buffer/Line Driver with 3-STATE Outputs
November 1992 Revised April 2005
74VHC244 Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The VHC244 is an advanced high speed
CMOS octal bus buffer 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 VHC244 is a non-inverting 3-STATE buffer having two active-LOW output enables. These devices are designed to be used as 3-STATE memory address drivers, clock drivers, and bus oriented transmitter/receivers.
An input protection circuit ensures that 0V to 7V can be applied to the input pins without regard to the supply
voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input
voltages.
Features
s High Speed: tPD 3.9ns (typ) at VCC 5V s High noise immunity: VNIH VNIL 28% VCC (min) s Power down protection is provided on all inputs s Low noise: VOLP 0.6V (typ) s Low power dissipation: ICC 4 PA (max) @ TA 25qC s Pin and function compatible with 74HC244
Ordering Code:
Order Number Package Number
Package Description
74VHC244M
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74VHC244SJ
M20D
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC244MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TS...