54AC164245
Rad-hard 16-bit transceiver, 3.3 V to 5 V bidirectional level shifter
Datasheet −production data
Features
■ Fully compatible with 54ACS164245
■ Dual supply bidirectional level shifter
■ Extended voltage range from 2.3 V to 5.5 V
■ Separated enable pin for 3-state output
■ Schmidt-triggered I/Os: 100 mV hysteresis
■ Internal 26 Ω limiting resistor on each I/O
■ High speed: Tpd = 8 ns maximum
■ Bus hold
Ceramic Flat-48
■ Fail safe
■ Cold spare
The upper metallic lid is not electrically connected to
any pins, nor to the IC die inside the package
■ Hermetic package
■ 100 krad (Si) at any Mil1019 dose rate
2
■ SEL immune to 110MeV.cm /mg LET ions
■ RHA QML-V qualified
All pins have cold spare buffers to change them to
high impedance when V is tied to ground.
DD
Description
This IC is intended for two-way asynchronous
communication between the data buses and the
direction of the data transmission is determined
by the nDIR inputs.
The 54AC164245 is a rad-hard advanced high-
speed CMOS, Schmitt trigger 16-bit bidirectional
multi-purpose transceiver with 3-state outputs and
cold sparing.
The A port interfaces with the 3.3 V bus but can
also operate at 2.3 V. The B port operates with the
5 V bus.
Designed for use as an interface between a 5 V
bus and a 3.3 V bus in mixed 5 V/3.3 V supply
systems, it achieves high-speed operation while
maintaining the CMOS low-power dissipation.
Table 1.
Device summary
Quality
level
Lead
finish
Reference
SMD pin
Package
Mass
EPPL
Temp range
Engineering
model
RHRAC164245K1
-
Gold
-
-55 °C
to +125 °C
Flat-48
1.50 g
QMLV-
Flight
RHRAC164245K01V 5962R9858008VYC
Gold
Target
Note:
Contact your ST sales office for information on the specific conditions for products in die form.
April 2012
Doc ID 18093 Rev 2
1/22
This is information on a product in full production.
www.st.com
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