Standard Products
UT54ACTQ16245
RadHard CMOS 16-bit Bidirectional Transceiver, TTL Inputs, and
Three-State Outputs
Datasheet
May 16, 2012
www.aeroflex.com/radhard
FEATURES
16 non-inverting bidirectio nal buffers with three-state out-
puts
Guaranteed simultaneously switching noise level and
dynamic threshold performance
Separate control logic for each byte
0.6m Commercial RadHardTM CMOS
- Total dose: 100K rad(Si)
- Single Event Latchup immune
High speed, low power consumption
Output source/sink 24mA
Standard Microcircuit Drawing 5962-06244
- QML compliant part
Package:
- 48-lead flatpack, 25 mi l pi tch (.390 x .640)
DESCRIPTION
The 16-bit wide UT54ACTQ1 6245 transceiver is built using
Aeroflex’s Commercial RadHardTM epitaxial CMOS technol-
ogy and is ideal for space applications. This high speed, low
power UT54ACTQ16245 transceiver is designed to perform
asynchronous two-way communication and signal buffering.
Balanced outputs and low "on" outpu t impe dance mak e the
UT54ACTQ16245 well sui ted for dri ving high capacitance
loads and low impedance backplanes. The Transmit/Receive
input (T/R) controls the direction of data flow through the de-
vice. The output enable input (OEn, active low) overrides the
direction co ntrol (T/R) and disables both the A and B ports by
placing them in a high impedance state. These signals can be
driven from either port A or B. The direction and output enable
controls operate these devices as either two independent 8-bit
transceivers or one 16-bit transceiver
LOGIC SYMBOL
PIN DESCRIP TION
FUNCTION TABLE
Pin Names Description
OEnOutput Enable Input (Active Low)
T/RnDirection Control Inputs
A0-A15 Side A Inputs or 3-State Outputs
B0-B15 Side B Inputs or 3-State Outputs
ENABLE
OEnDIRECTION
T/RnOPERATION
L L B Data To A Bus
L H A Data To B Bus
H X Isolation, High-Z State on
Bus A and Bus B
(48)
OE1
G2
(47)
A0
(46)
A1 (44)
(2) B0
(5)
(3) B1
A2 (43)
A3 (41)
A4 (40)
A5
B2
(9) B5
(8) B4
(6) B3
(38)
A6 (37)
A7 (12) B7
(11) B6
(1)
T/R11EN1 (BA)
1EN2 (AB)
11 12
(25)
OE2G1 (24) T/R2
21 22
(36)
A8 B8
(13)
(35)
A9 (33)
A10 (32)
A11 (30)
A12 (29)
A13 (27)
A14 (26)
A15
(16) B9
B10
(20) B13
(19) B12
(17) B11
(23) B15
(22) B14
(14)
2EN1 (BA)
2EN2 (AB)