UT54ACTQ16245 Datasheet, PDF (1/12 Pages) Aeroflex Circuit Technology – RadHard CMOS 16-bit Bidirectional Transceiver, TTL Inputs, and Three-State Outputs

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 bidirectional buffers with three-state out-
puts
 Guaranteed simultaneously switching noise level and
dynamic threshold performance
 Separate control logic for each byte
 0.6m Commercial RadHard^TM 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 mil pitch (.390 x .640)
DESCRIPTION
The 16-bit wide UT54ACTQ16245 transceiver is built using
Aeroflex’s Commercial RadHard^TM 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" output impedance make the
UT54ACTQ16245 well suited for driving 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 control (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
OE1 (48)
OE2 (25)
(1)
T/R1
G1
G2
2EN1 (BA)
2EN2 (AB)
1EN1 (BA)
1EN2 (AB)
(47)
A0
A1 ⁽⁴⁶⁾
(44)
A2
(43)
A3
(41)
A4
(40)
A5
(38)
A6
(37)
A7
(36)
A8
(35)
A9
(33)
A10
(32)
A11
(30)
A12
(29)
A13
(27)
A14
(26)
A15
11
12
21
22
(24)
T/R2
(2)
B0
(3)
B1
(5)
B2
(6)
B3
(8)
B4
(9)
(11) ^B5
B6
(12)
(13) ^B7
B8
(14)
B9
(16)
B10
(17)
B11
(19)
B12
(20)
(22)
B13
B14
(23)
B15
PIN DESCRIPTION
Pin Names
Description
OEn
T/Rn
Output Enable Input (Active Low)
Direction Control Inputs
A0-A15
B0-B15
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
FUNCTION TABLE
ENABLE
OEn
DIRECTION
T/Rn
L
L
L
H
H
X
OPERATION
B Data To A Bus
A Data To B Bus
Isolation, High-Z State on
Bus A and Bus B
1