1 Features
• Operates from 1.65V to 3.6V
• Inputs accept voltages to 5.5V
• Specified from –40°C to +85°C and
–40°C to +125°C
• Maximum tpd of 5.9ns at 3.3V
• Typical VOLP (output ground bounce)
< 0.8V at VCC = 3.3V, TA = 25°C
• Typical VOHV (output VOH undershoot)
> 2V at VCC = 3.3V, TA = 25°C
• Supports mixed-mode signal operation on
all ports (5V input or output voltage with
3.3V VCC)
• Ioff supports live insertion, partial-power-down
mode, and back-drive protection
• Can be used as a down translator to translate
inputs from a maximum of 5.5V down
to the VCC level
• Available in ultra small logic QFN package (0.5mm
maximum height)
• Latch-up performance exceeds 250mA per
JESD 17

2 Applications
• Servers
• LED displays
• Network switches
• Telecom infrastructure
• Motor drivers
• I/O expanders
• Enable or disable a digital signal
• Controlling an indicator LED
• Translation between communication modules and
system controllers

3 Description
These octal bus buffers are designed for 1.65V to
3.6V VCC operation. The SN74LVC244A devices are
designed for asynchronous communication between
data buses.