HI-1570 Datasheet, PDF(1/9 Page) Holt Integrated Circuits – 5V Monolithic Dual Variable AmplitudeTransceiver

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HI-1570 Datasheet, PDF (1/9 Pages) Holt Integrated Circuits – 5V Monolithic Dual Variable AmplitudeTransceiver

November 2004

HI-1570

MIL-STD-1553 / 1760

5V Monolithic Dual Variable AmplitudeTransceiver

DESCRIPTION

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. A single pin allows the user to control

the transmitter output amplitude.

The receiver section of each channel converts the 1553

bi-phase bus 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 â0â.

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.

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

PIN CONFIGURATIONS

VCONT A&B 1

BUSA 2

BUSA 3

RXENA 4

GNDA 5

VDDA/B 6

BUSB 7

BUSB 8

RXENB 9

GNDB 10

1570CDI

1570CDT

1570CDM

20 TXA

19 TXA

18 TXINHA

17 RXA

16 RXA

15 TXB

14 TXB

13 TXINHB

12 RXB

11 RXB

20 Pin Ceramic DIP package