Standard Products
UT63M143 MIL-STD-1553A/B Bus +3.3V
Transceiver
Datasheet
March 18, 2011
www.aeroflex.com/HiRel
FEATURES
INTRODUCTION
3.3-volt only operation
The monolithic UT63M143 Transceivers are complete
transmitter and receiver pairs for +3-volt MIL-STD-1553A and
1553B applications. Encoder and decoder interfaces are idle
low.
Dual-cavity monolithic silicon technology
Fit and functionally compatible to industry standard
transceiver
The receiver section of the UT63M143 series accepts biphasemodulated Manchester II bipolar data from a MIL-STD-1553
data bus and produces TTL-level signal data at its RXOUT and
RXOUT outputs. An external RXEN input enables the receiver
outputs or disables them low.
Idle low transmitter inputs and receiver outputs
Operating temperature range: -55C to +125C
Operational environment:
- Total-dose tolerance: 300 krads and 1Mrad(Si)
- SEL Immune to a LET of 111 MeV-cm2/mg
The transmitter section accepts biphase TTL-level signal data
at its TXIN and TXIN and produces MIL-STD-1553 data
signals. The transmitter’s output voltage is typically 7.1 VPP,LL.
Activating the TXIHB input or setting both data inputs to the
same logic level disables the transmitter outputs.
Packaging options:
- 24-lead flatpack, dual-channel 50-mil center
- 36-pin DIP, dual-channel 100-mil center
Standard Microcircuit Drawing (SMD): 5962-07242
The UT63M143 series offers complete transmitter and receiver
pairs packaged in a dual-channel 36-pin DIP or 24-lead flatpack
configurations designed for use in any MIL-STD-1553
application.
- QML Q and QML V compliant part
RXEN
RXOUT
RXIN
RXIN
FILTER
and
LIMITER
FILTER
TO DECODER
RXOUT
THRESHOLD
REFERENCE
TXOUT
TXIN
DRIVERS
COMPARE
FROM ENCODER
TXOUT
TXIN
TXIHB
Figure 1. Functional Block Diagram
1
RECEIVER
NAME
PIN
NUMBER
TYPE
DESCRIPTION
RXOUT
(A)
5 [4]
TO
Receiver outputs: RXOUT and RXOUT are complementary
Manchester II decoder outputs.
RXOUT
(B)
14 [10]
TO
RXOUT
(A)
8 [6]
TO
RXOUT
(B)
17 [12]
TO
RXEN
(A)
6 [5]
TI
RXEN
(B)
15 [11]
TI
RXIN 1
(A)
29 [1]
DI
[DIO]
RXIN
(B)
20 [7]
DI
[DIO]
RXIN 1
(A)
30 [2]
DI
[DIO]
RXIN
(B)
21 [8]
DI
[DIO]
RXOUT is the complement of RXOUT output.
Receiver enable/disable: This is an active high input signal. Low
input forces RXOUT and RXOUT low.
Receiver input: RXIN and RXIN are biphase-modulated
Manchester II bipolar inputs from MIL-STD-1553 data bus.
RXIN is the half-cycle complement of RXIN input.
Note:
1. The 24-lead flatpack internally connects TXOUT to RXIN (CHA, CHB) and TXOUT to RXIN (CHA, CHB) for each channel.
POWER AND GROUND (Note 1)
NAME
PIN
NUMBER
TYPE
VDD
(A)
33 [20]
PWR
VDD
(B)
24 [14]
PWR
GND
(A)
3, 7, 31
[3,19,21]
GND
GND
(B)
12, 16, 22
[9,13,15]
DESCRIPTION
GND
+3.3 VDC power (0.15V)
Recommended decoupling capacitors:
1F (tantalum) and 0.1F (ceramic)
Ground reference
Note:
1. Recommended decoupling it to place one 1F Tantalum and one 0.1F ceramic, capacitor as close as possible to each VDD power pin.
3
