HI-1567, HI-1568
March 2001
DESCRIPTION
The HI-1567 and HI-1568 are low power CMOS dual
transceivers designed to meet the requirements of
MIL-STD-1553 /1760 specifications.
PIN CONFIGURATIONS
VDDA 1
20 TXA
19 TXA
18 TXINHA
17 RXA
16 RXA
15 TXB
14 TXB
13 TXINHB
12 RXB
11 RXB
The transmitter section of each channel takes
complimentary 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.
The receiver section of the each channel converts the 1553
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
logic 1 (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, please contact your Holt Sales representative.
BUSA 2
BUSA 3
RXENA 4
GNDA 5
VDDB 6
BUSB 7
BUSB 8
RXENB 9
GNDB 10
20 Pin Ceramic DIP package
FEATURES
VDDA
BUSA
BUSA
RXENA
GNDA
VDDB
BUSB
BUSB
RXENB
GNDB
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
TXA
TXA
TXINHA
RXA
RXA
TXB
TXB
TXINHB
RXB
RXB
!
Compliant
to MIL-STD-1553A & B,
MIL-STD-1760
!
CMOS technology for low standby power
!
Smallest footprint available in 20 pin plastic
ESOIC (thermally enhanced SOIC) package
!
Less than 1.0W maximum power dissipation
!
Available in DIP, Flatpack and small outline
(ESOIC) package options
20 Pin Plastic ESOIC - WB package
!
Military processing options
!
Industry standard pin configurations
(DS1567 Rev. B)
HOLT INTEGRATED CIRCUITS
1
03/01
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
