HI-1574

The HI-1573 and HI-1574 are low power CMOS dual transceivers designed to meet the requirements of the MIL-STD-1553 specification.

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 of HI-1573 and HI-1574 are provided for each transmitter.

The receiver section of the each channel converts the 1553 bus 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 HI-1573 and HI-1574 .
To minimize the package size for this function, the transmitter outputs are internally connected to the receiver  inputs, so that only two pins of HI-1573 and HI-1574  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.