ACT4440N-2 参数 Datasheet PDF下载

TX DATA IN

TX DATA IN

TX INHIBIT

GND

CASE GND

EXT. THRESHOLD

DATA

DATA

SET INTERNAL

THRESHOLD DATA

EXT. THRESHOLD

DATA

+5 V

-12V or -15V

RX DATA IN

RX DATA IN

+15V or +12V

STROBE

DRIVER

TRANSMIT

ACTIVE

FILTER

V+

TX DATA OUT

OUTPUT

STAGE

TX DATA OUT

COMP.

RX DATA OUT

V-

RECEIVE

ACTIVE

FILTER

INPUT

AMP

COMP.

RX DATA OUT

BLOCK DIAGRAM (WITHOUT TRANSFORMER

DATA IN

DATA IN

INHIBIT

LINE TO LINE

OUTPUT

Notes: 1. Line to line waveforms illustrate Macair signals, MIL-STD-1553 signals are trapezoidal.

2. DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them.

3. DATA and DATA must be in the same state during off time (both high or low).

FIGURE 1 – TRANSMITTER LOGIC WAVEFORMS IDEALIZED

LINE TO LINE

INPUT

DATA OUT

DATA OUT

Note overlap

Notes: 1. Normally high output in standby.

FIGURE 2 – RECEIVER LOGIC WAVEFORMS IDEALIZED

(Shown for normally high only)

2

SCD4404N Rev D 12/19/07

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