FEATURES
· Member of the Texas Instruments Widebus™
Family
· Operates From 1.65 V to 3.6 V
· Max tpd of 4.2 ns at 3.3 V
· ±12-mA Output Drive at 3.3 V
· All Outputs Have Equivalent 26-W Series
Resistors, So No External Resistors Are
Required
· Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
· 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)

DESCRIPTION/ORDERING INFORMATION
This 16-bit (dual-octal) noninverting bus transceiver is
designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCHR16245 is designed for
asynchronous communication between data buses.
The control-function implementation minimizes
external timing requirements.
This device can be used as two 8-bit transceivers or
one 16-bit transceiver. It allows data transmission
from the A bus to the B bus or from the B bus to the
A bus, depending on the logic level at the
direction-control (DIR) input. The output-enable (OE)
input can be used to disable the device so that the
buses are effectively isolated.
All outputs, which are designed to sink up to 12 mA, include equivalent 26-W series resistors to reduce overshoot
and undershoot.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.