Appendix 2 - 2

The transmitter section accepts biphase TTL-level signal data

at its TXIN and TXIN and produces MIL-STD-1553 data

signals. The transmitter’s output voltage is typically

inputs to the same logic level disables the transmitter outputs.

The UT63M14x series offers complete transmitter and receiver

pairs packaged in a dual-channel 36-pin DIP or 24-lead flatpack

configurations designed for use in any MIL-STD-1553

application.

Legend for TYPE field:

TI

=

TTL input

TO

=

TTL output

DO

=

Differential output

DI

=

Differential input

DIO =

Differential input/output

( )

=

Channel designator

[ ]

=

24-lead flatpack

TRANSMITTER

Note:

1. The 24-lead flatpack internally connects TXOUT to RXIN (CHA, CHB) and TXOUT to RXIN (CHA, CHB) for each channel.

NAME

PIN

NUMBER

TYPE

DESCRIPTION

(A)

TXOUT

(B)

1 [1]

10 [7]

DO

[DIO]

DO

[DIO]

Transmitter outputs: TXOUT and TXOUT are differential data

signals.

(A)

TXOUT

(B)

2 [2]

11 [8]

DO

[DIO]

DO

[DIO]

TXOUT is the half-cycle complement of TXOUT.

TXIHB

(A)

TXIHB

(B)

34 [22]

25 [16]

TI

TI

Transmitter inhibit: This is an active high input signal.

TXIN

(A)

TXIN

(B)

35 [23]

26 [17]

TI

TI

Transmitter input: TXIN and TXIN are complementary TTL-

level Manchester II encoder inputs.

TXIN

(A)

TXIN

(B)

36 [24]

27 [18]

TI

TI

TXIN is the complement of TXIN input.