FEATURES
· Operate From 1.65 V to 3.6 V
· Inputs Accept Voltages to 5.5 V
· Max tpd of 7.4 ns at 3.3 V
· Typical V OLP (Output Ground Bounce)
<0.8 at VCC = 3.3 V, TA = 25°C
· Typical V OHV (Output VOH Undershoot)
>2 V at VCC = 3.3 V, TA = 25°C
· Support Mixed-Mode Signal Operation on All
Ports (5-V Input/Output Voltage With
3.3-V VCC)
· Ioff Supports Partial-Power-Down Mode
Operation
· Latch-Up Performance Exceeds 250 mA Per
JESD 17
· ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION
The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V VCC operation, and the
SN74LVC646A octal bus transceiver and register is designed for 1.65-V to 3.6-V VCC operation.