
HI-1567, HI-1568
DESCRIPTION
FEATURES
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Compliant
MIL-STD-1760
PIN CONFIGURATIONS
The HI-1567 and HI-1568 are low power CMOS dual
transceivers designed to meet the requirements of
MIL-STD-1553/1760specifications.
The transmitter section of each channel takes
complimentaryCMOS / TTL digitalinputdata andconverts
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.
Thereceiversectionoftheeachchannelconvertsthe1553
bus bi-phase data to complimentary 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 (HI-1567) or
logic1(HI-1568).
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,pleasecontactyourHoltSalesrepresentative.
VDDA 1
BUSA 2
3
RXENA 4
GNDA 5
VDDB 6
BUSB 7
8
RXENB 9
GNDB 10
BUSA
BUSB
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to
MIL-STD-1553A
&
B,
CMOStechnologyforlowstandbypower
Smallest footprint available in 20 pin plastic
ESOIC(thermallyenhancedSOIC) package
Lessthan1.0Wmaximumpowerdissipation
Available in DIP, Flatpack and small outline
(ESOIC) package options
Militaryprocessingoptions
Industrystandardpinconfigurations
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
VDDA
BUSA
RXENA
GNDA
VDDB
BUSB
RXENB
GNDB
BUSA
BUSB
TXA
RXA
TXB
RXB
TXA
TXINHA
RXA
TXB
TXINHB
RXB
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20 Pin Plastic ESOIC - WB package
March 2001
(DS1567 Rev. B)
03/01
HOLT INTEGRATED CIRCUITS
1