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HI-1570
MIL-STD-1553 / 1760
5V Monolithic Dual Variable AmplitudeTransceiver
PIN CONFIGURATIONS
DESCRIPTION
bus
To minimize the package size for this function, the
transmitter outputs are internally connected to the
receiver inputs so that only two pins are required for
connection to each coupling transformer. For designs
requiring independent access to transmitter and receiver
1553 signals, please contact your Holt Sales
representative.
The HI-1570 is a low power CMOS dual +5V transceiver
with the ability to vary the amplitude of the transmitter
outputs. It is designed to meet the requirements of the
MIL-STD-1553 / 1760 specifications.
The transmitter section of each channel takes
complementary CMOS / TTL digital input data and
converts it to bi-phase Manchester encoded 1553 signals
suitable for driving the bus isolation transformer.
Separate transmitter inhibit control signals are provided
for each transmitter. Asingle pin allows the user to control
the transmitter output amplitude.
The receiver section of each channel converts the 1553
bi-phase
data to complementary CMOS / TTL data
suitable for inputting to a Manchester decoder. Each
receiver has a separate enable input which can be used to
force the output of the receiver to a logic “0“.
V
A&B 1
BUSA 2
3
RXENA 4
GNDA 5
VDDA/B 6
BUSB 7
8
RXENB 9
GNDB 10
CONT
BUSA
BUSB
FEATURES
Compliant to MIL-STD-1553A & B,
MIL-STD-1760,ARINC 708A
CMOS technology for low standby power
Single +5V power supply
Variable transmitter output amplitude
Smallest footprint available in 20 pin plastic
ESOIC (thermally enhanced SOIC) package
Less than 1.0W maximum power dissipation
Military processing options
Industry standard pin configurations
20 Pin Ceramic DIP package
20
19 TXA
18 TXINHA
17 RXA
16
15
14 TXB
13 TXINHB
12 RXB
11
TXA
RXA
TXB
RXB
November 2004
(DS1570 Rev. C)
11/04
V
A&B 1
BUSA 2
BUSA
3
RXENA 4
GNDA 5
VDDA/B 6
BUSB 7
BUSB
8
RXENB 9
GNDB 10
CONT
20
19 TXA
18 TXINHA
17 RXA
16
15
14 TXB
13 TXINHB
12 RXB
11
RXB
TXA
RXA
TXB
20 Pin Plastic ESOIC - WB package
1570PSI
1570PST
1570PSM
1570CDI
1570CDT
1570CDM
HOLT INTEGRATED CIRCUITS
www.holtic.com