HI-1585 Datasheet, PDF (1/14 Pages) Holt Integrated Circuits – 3.3V Dual Transceiver with Tail-Off Control

December 2015
HI-1585
MIL-STD-1553 / 1760
3.3V Dual Transceiver with Tail-Off Control
DESCRIPTION
The HI-1585 is an ultra-low power CMOS dual transceiver
designed to meet the requirements of the MIL-STD-1553
and MIL-STD-1760 specifications.
The transmitter section of each bus takes complementary
CMOS / TTL Manchester II bi-phase data and converts it to
differential voltages suitable for driving the bus isolation
transformer. Separate transmitter inhibit control signals are
provided for each transmitter.
The receiver section of the each bus converts the 1553 bus
bi-phase analog signals to complementary CMOS / TTL
data suitable for input to a Manchester decoder. Each bus
has its own Receive Enable input, which forces both
receive output signals to the bus idle state (logic "0") when
disabled.
To reduce end-of-transmission residual voltage offset
(”tail-off”), logic-level transmit signal inputs can be clocked-
in to synchronize their rise/fall transitions. This
compensates for timing mismatch or transmit signal path
propagation differences caused by board layout.
When sub-optimal board design consistently presents tail-
off magnitudes close to or exceeding mandatory limits,
another unique option lets the user select a bus-specific
level of digital tail-off compensation.
The HI-1585 also provides optional Receive output pulse
extension. With traditional MIL-STD-1553 transceivers,
low amplitude receive signals can result in RX/nRX pulses
less than 100ns wide. When this feature is enabled,
RX/nRX output pulse widths do not drop below 300ns,
greatly simplifying decoder design and enhancing noise
performance.
APPLICATIONS
· MIL-STD-1553 Terminals
· Flight Control and Monitoring
· Radar Systems
· ECCM Interfaces
· Stores Management
· Test Equipment
· Sensor Interfaces
· Instrumentation
PIN CONFIGURATION
GND 1
VDDB 2
TXB 3
TXB 4
TXINHB 5
RXENB 6
RXB 7
RXB 8
GND 9
ENPEXTB 10
VDDB 11
BUSBIN 12
1585PCI
1585PCT
1585PCM
36 GND
35 VDDA
34 TXA
33 TXA
32 TXINHA
31 RXENA
30 RXA
29 RXA
28 GND
27 ENPEXTA
26 VDDA
25 BUSAIN
48 Pin Plastic 6mm x 6mm
Chip-Scale Package (QFN)
FEATURES
· Compliant to MIL-STD-1553A and B,
MIL-STD-1760 and ARINC 708A
· 3.3V single supply operation
· Smallest transceiver footprint available in
6mm x 6mm 48-pin plastic chip-scale
package (QFN)
· Input data synchronization.
· Tail-off compensation control.
· Receiver output pulse-width extension
control.
(DS1585 Rev. New)
HOLT INTEGRATED CIRCUITS
www.holtic.com
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