UTMC 5962R8864406ZX, 5962R8864406ZA, 5962R8864406YX, 5962R8864406XC, 5962R8864406XA, 5962R8864406VZC, 5962R8864406VZA, 5962R8864406VYX, 5962R8864406VYC, 5962R8864406VYA, 5962R8864406VXX, 5962R8864406VXC, 5962R8864405ZX, 5962R8864405ZC, 5962R8864405ZA, 5962R8864405YX, 5962R8864405YC, 5962R8864405YA, 5962R8864405XX, 5962R8864405XC, 5962R8864405XA, 5962R8864405VZX, 5962R8864405VZA, 5962R8864405VYX, 5962R8864405VYC, 5962R8864405VYA, 5962R8864405VXX, 5962R8864405VXC, 5962R8864405VXA, 5962-8864406ZX, 5962-8864406ZC, 5962-8864406VXX, 5962-8864405ZX, 5962-8864406VXA, 5962-8864405ZC, 5962-8864405ZA, 5962-8864405YX, 5962-8864405YC, 5962-8864405YA, 5962-8864406ZA, 5962-8864406YC, 5962-8864406XA, 5962-8864406XX, 5962-8864406VZX, 5962-8864406VZC, 5962-8864406VZA, 5962-8864406VYX, 5962-8864406VYA, 5962-8864405XX, 5962-8864405XC, 5962-8864405VZX, 5962-8864405XA, 5962-8864405VZC, 5962-8864405VZA, 5962-8864405VYC, 5962-8864405VYA, 5962-8864405VXX, 5962-8864405VXA, UT63M-127DVX, UT63M-127DVC, UT63M-127DVA, UT63M-127DQX, UT63M-127DQA, UT63M-127CCC, UT63M-127BVC, UT63M-127BVX, UT63M-127BQX, UT63M-127BQC, UT63M-127BQA, UT63M-127BCX, UT63M-127BPC, UT63M-125BVA, UT63M-125BQC, UT63M-125BPC, UT63M-125BCX, UT63M-125BCC, UT63M-125BCA, UT63M-127DPC, UT63M-127DCC, UT63M-127DCA, UT63M-127CVC, UT63M-127CQC, UT63M-127CVA, UT63M-127CPC, UT63M-127CCX, UT63M-125DCA, UT63M-125CVX, UT63M-125CVA, UT63M-125CVC, UT63M-125CQX, UT63M-125CQC, UT63M-125CQA, UT63M-125CPC, UT63M-125CCC, UT63M-125BVX, UT63M-127BCC, UT63M-127BCA, UT63M-125DVX, UT63M-125DVC, UT63M-125DVA, UT63M-125DQC, UT63M-125DPC, UT63M-125DCX, UT63M-125DCC Datasheet

Loading...

Standard Products

UT63M1XX MIL-STD-1553A/B BusTransceiver

Data Sheet

Sept. 1999

FEATURES

qFull conformance to MIL-STD-1553A and 1553B

qCompletely monolithic bipolar technology

qLow power consumption

qFit and functionally compatible to industry standard 631XX series

INTRODUCTION

The monolithic UT63M1XX Transceivers are complete transmitter and receiver pairs conforming fully to MIL-STD- 1553A and 1553B. Encoder and decoder interfaces are idle low. UTMC’s advanced bipolar technology allows the positive analog power to range from +5V to +12V or +5V to +15V, providing more flexibility in system power supply design.

q Idle low encoding version

The receiver section of the UT63M1XX series accepts biphase-

modulated Manchester II bipolar data from a MIL-STD-1553

 

qFlexible power supply voltages: V CC=+5V, V EE=-12V or -

data bus and produces TTL-level signal data at its RXOUT and

 

 

 

 

RXOUT outputs. An external RXEN input enables or disables

15V, and V CCA=+5V to +12V or +5V to +15V

the receiver outputs.

 

q Full military operating temperature range, -55°C to +125°C,

 

 

 

 

screened to QML Q or QML V requirements

 

 

 

 

q Standard Military Drawing available

 

 

RXEN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXIN

 

 

FILTER

 

 

 

 

 

 

 

 

 

 

FILTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TO DECODER

 

 

and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXIN

 

 

LIMITER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXOUT

 

 

 

 

 

 

 

 

THRESHOLD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRIVERS

 

 

REFERENCE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMPARE

FROM ENCODER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXIHB

Figure 1. Functional Block Diagram

1

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 42VPP, L- L. Activating the TXIHB input or setting both data inputs to the same logic level disables the transmitter.

The UT63M1XX series offers a monolithic transmitter and receiver packaged in either single channel (24-pin) or dualchannel (36-pin) 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 () = Channel designator

TRANSMITTER

 

NAME

 

PACKAGE

PIN

TYPE

 

 

 

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SINGLE

 

DUAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXOUT

 

1

 

1

DO

 

Transmitter outputs: TXOUT and

TXOUT

are differential data signals.

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

TXOUT

 

N/A

 

10

DO

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXOUT

 

2

 

2

DO

 

 

 

is the complement of TXOUT.

 

TXOUT

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/A

 

11

DO

 

 

 

 

 

 

 

 

TXOUT

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXIHB

 

21

 

34

TI

 

Transmitter inhibit: this is an active high input signal.

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXINB

 

N/A

 

25

TI

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXIN

 

22

 

35

TI

 

Transmitter inputs: TXIN and

TXIN

are complementary TTL-level

 

 

(A)

 

 

 

 

 

 

Manchester II encoder inputs.

 

 

TXIN

 

N/A

 

26

TI

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXIN

 

 

23

 

36

TI

 

TXIN

is the complement of TXIN input.

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/A

 

27

TI

 

 

 

 

 

 

 

 

 

 

TXIN

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

RECEIVER

 

NAME

 

PACKAGE

PIN

TYPE

 

 

 

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SINGLE

 

DUAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXOUT

 

7

 

5

TO

 

Receiver outputs: RXOUT and

 

 

are complementary

 

RXOUT

 

 

(A)

 

 

 

 

 

 

Manchester II decoder outputs.

RXOUT

 

N/A

 

14

TO

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXOUT

 

10

 

8

TO

 

 

 

is the complement of RXOUT output

 

 

RXOUT

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/A

 

17

TO

 

 

 

 

 

 

 

 

RXOUT

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXEN

 

8

 

6

TI

 

Receiver enable/disable: This is an active high input signal.

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXEN

 

N/A

 

15

TI

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXIN

 

15

 

29

DI

 

Receiver inputs: RXIN and

 

 

are biphase-modulated Manchester

 

 

RXIN

 

 

(A)

 

 

 

 

 

 

II bipolar inputs from MIL-STD-1553 data bus.

 

 

RXIN

 

N/A

 

20

DI

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXIN

 

 

16

 

30

DI

 

 

is the complement of RXIN input.

 

 

 

 

RXIN

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/A

 

21

DI

 

 

 

 

 

 

 

 

 

 

RXIN

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER AND GROUND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NAME

 

PACKAGE

PIN

TYPE

 

 

 

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SINGLE

 

DUAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

20

 

33

PWR

 

+5VDC power (±10%)

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

N/A

 

24

PWR

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCCA

 

13

 

28

PWR

 

+5 to +12VDC power or

 

 

(A)

 

 

 

 

 

 

+5 to +15VDC power (± 5%)

 

 

VCCA

 

N/A

 

19

PWR

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VEE

 

19

 

32

PWR

 

-12 or -15VDC power (± 5%)

 

 

(A)

 

 

 

 

 

 

Recommended de-coupling capacitors 4.7μF and.1μF

 

 

VEE

 

N/A

 

23

PWR

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

3, 9, 18

3, 7, 31

GND

 

Ground reference

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

N/A

12, 16, 22

GND

 

 

 

 

 

 

 

 

 

 

(B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

TXOUT

1

24

 

NC

 

 

 

2

23

 

 

 

 

 

TXOUT

 

 

 

 

 

 

 

 

TXIN

 

 

 

 

 

 

 

 

GND

 

3

22

 

TXIN

NC

4

21

 

TXIHB

NC

 

5

CHANNEL 20

 

VCC

 

 

NC

6

A

 

 

 

 

 

19

 

VEE

 

 

 

 

 

 

RXOUT

 

7

18

 

GND

RXEN

 

8

17

 

NC

GND

9

16

 

 

 

 

 

 

RXIN

 

 

 

 

 

 

 

 

 

10

15

 

RXIN

RXOUT

 

 

 

 

 

 

 

 

 

 

NC

11

14

 

NC

NC

 

12

13

 

VCCA

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2a. Functional Pin Diagram--Single Channel

TXOUT

 

 

1

 

36

 

 

 

 

 

 

 

 

TXIN

 

 

 

TXOUT

 

2

 

35

 

TXIN

GND

3

 

34

 

TXIHB

NC

 

4

CHANNEL 33

 

VCC

 

5

A

32

 

RXOUT

 

 

VEE

 

 

 

 

 

 

RXEN

 

6

 

31

 

GND

GND

7

 

30

 

 

 

 

 

 

RXIN

 

 

 

8

 

29

 

RXIN

RXOUT

 

 

 

NC

9

 

268

 

VCCA

 

 

 

 

 

 

 

 

 

10

 

27

 

 

 

 

TXOUT

 

 

TXIN

 

 

 

11

 

26

 

TXIN

TXOUT

 

 

 

 

 

 

GND

12

CHANNEL

25

 

TXIHB

NC

 

13

24

 

VCC

 

14

B

23

 

RXOUT

 

 

VEE

 

15

 

22

 

RXEN

 

 

 

GND

 

 

 

GND

16

 

21

 

 

 

 

 

 

 

RXIN

 

 

 

 

17

 

20

 

RXOUT

 

 

 

RXIN

 

 

 

NC

 

18

 

19

 

VCCA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2b. Functional Pin Diagram--Dual Channel

4

TRANSMITTER

The transmitter section accepts Manchester II biphase TTL data and converts this data into differential phase-modulated current drive. Transmitter current drivers are coupled to a MIL-STD- 1553 data bus via a transformer driven from the TXOUT and

TXOUT terminals. Transmitter output terminals’ nontransmitting state is enabled by asserting TXIHB (logic 1), or by placing both TXIN and TXIN at the same logic level. Table 1, Transmit Operating Mode, lists the functions for the output data in reference to the state of TXIHB. Figure 3 shows typical transmitter waveforms.

RECEIVER

The receiver section accepts biphase differential data from a MIL-STD-1553 data bus at its RXIN and RXIN inputs. The receiver converts input data to biphase Manchester II TTL format and is available for decoding at the RXOUT and RXOUT

terminals. The outputs RXOUT and RXOUT represent positive and negative excursions (respectively) of the inputs RXIN and RXIN. Figure 4 shows typical receiver output waveforms.

Models UT63M105, UT63M107, UT63M125, and UT63M127 idle in the “0” state when disabled or receiving no signal.

POWER SUPPLY VOLTAGES

The UT63M1XX series meets device requirements over a wide range of power supply voltages. Table 2 shows the overall capabilities of all available devices. Each channel of the dual transceiver is electrically and physically separate from the other and fully independent, including all power and signal lines. Thus there will be no interaction between the channels.

TXIN

BOTH HIGH

 

OR

TXIN

BOTH LOW

 

TXIHB

LINE-TO-LINE

DIFFERENTIAL 90%

OUTPUT

TXOUT, TXOUT

 

 

10%

 

 

 

 

 

 

TXIN

TXIN

tTXDD

Figure 3. Typical Transmitter Waveforms

Table 1. Transmit Operating Mode

TXIN

TXIN

TXIHB

TXOUT

 

 

 

 

x1

x

1

Off 2

0

0

x

Off 3

0

1

0

On

 

 

 

 

1

0

0

On

 

 

 

 

1

1

x

Off 3

Notes:

1.x = Don’t care.

2.Transmitter output terminals are in the non-transmitting mode during Off time.

3.Transmitter output terminals are in the non-transmitting mode during Off time, independent of TXIHB status.

5

DATA BUS INTERFACE

The designer can connect the UT63M1XX to the data bus via a short-stub (direct-coupling) connection or a long-stub (transformer-coupling) connection. Use a short-stub connection when the distance from the isolation transformer to the data bus does not exceed a one-foot maximum. Use a long-stub connection when the distance from the isolation transformer exceeds the one-foot maximum and is less than twenty-five feet. Figure 5 shows various examples of bus coupling configurations. The UT63M1XX series transceivers are designed to function with MIL-STD-1553A and 1553B compatible transformers.

RECOMMENDED THERMAL PROTECTION

All packages, single and dual, should mount to or contact a heat removal rail located in the printed circuit board. To insure proper heat transfer between the package and the heat removal rail, use a thermally conductive material between the package and the heat removal rail. Use a material such as Mereco XLN-589 or equivalent to insure heat transfer between the package and heat removal rail.

LINE-TO-LINE

DIFFERENTIAL

INPUT

RXOUT

RXOUT QUIESCENT IDLE LOW

RXOUT

RXOUT

tRXDD

Figure 4. Typical Receiver Waveforms

Table 2. Transceiver Model Capabilities

MODEL

VCC

VEE

VCCA

IDLE

UT63M105

+5V

-15V

+5 to +15V

Low

 

 

 

 

 

UT63M107

+5V

-12V

+5 to +12V

Low

 

 

 

 

 

UT63M125

+5V

-15V

+5 to +15V

Low

 

 

 

 

 

UT63M127

+5V

-12V

+5 to +12V

Low

 

 

 

 

 

6

UTMC 5962R8864406ZX, 5962R8864406ZA, 5962R8864406YX, 5962R8864406XC, 5962R8864406XA, 5962R8864406VZC, 5962R8864406VZA, 5962R8864406VYX, 5962R8864406VYC, 5962R8864406VYA, 5962R8864406VXX, 5962R8864406VXC, 5962R8864405ZX, 5962R8864405ZC, 5962R8864405ZA, 5962R8864405YX, 5962R8864405YC, 5962R8864405YA, 5962R8864405XX, 5962R8864405XC, 5962R8864405XA, 5962R8864405VZX, 5962R8864405VZA, 5962R8864405VYX, 5962R8864405VYC, 5962R8864405VYA, 5962R8864405VXX, 5962R8864405VXC, 5962R8864405VXA, 5962-8864406ZX, 5962-8864406ZC, 5962-8864406VXX, 5962-8864405ZX, 5962-8864406VXA, 5962-8864405ZC, 5962-8864405ZA, 5962-8864405YX, 5962-8864405YC, 5962-8864405YA, 5962-8864406ZA, 5962-8864406YC, 5962-8864406XA, 5962-8864406XX, 5962-8864406VZX, 5962-8864406VZC, 5962-8864406VZA, 5962-8864406VYX, 5962-8864406VYA, 5962-8864405XX, 5962-8864405XC, 5962-8864405VZX, 5962-8864405XA, 5962-8864405VZC, 5962-8864405VZA, 5962-8864405VYC, 5962-8864405VYA, 5962-8864405VXX, 5962-8864405VXA, UT63M-127DVX, UT63M-127DVC, UT63M-127DVA, UT63M-127DQX, UT63M-127DQA, UT63M-127CCC, UT63M-127BVC, UT63M-127BVX, UT63M-127BQX, UT63M-127BQC, UT63M-127BQA, UT63M-127BCX, UT63M-127BPC, UT63M-125BVA, UT63M-125BQC, UT63M-125BPC, UT63M-125BCX, UT63M-125BCC, UT63M-125BCA, UT63M-127DPC, UT63M-127DCC, UT63M-127DCA, UT63M-127CVC, UT63M-127CQC, UT63M-127CVA, UT63M-127CPC, UT63M-127CCX, UT63M-125DCA, UT63M-125CVX, UT63M-125CVA, UT63M-125CVC, UT63M-125CQX, UT63M-125CQC, UT63M-125CQA, UT63M-125CPC, UT63M-125CCC, UT63M-125BVX, UT63M-127BCC, UT63M-127BCA, UT63M-125DVX, UT63M-125DVC, UT63M-125DVA, UT63M-125DQC, UT63M-125DPC, UT63M-125DCX, UT63M-125DCC Datasheet

± 15VDC

OPERATION

± 12VDC

OPERATION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHORT-STUB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIRECT COUPLING

55 OHMS

 

 

 

 

ZO

1.4:1

 

 

 

 

 

 

1 FT MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LONG-STUB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER COUPLING

.75ZO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2:1

 

 

 

20 FT MAX 1:1.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.75ZO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHORT-STUB

DIRECT COUPLING

1.2:1

 

 

1 FT MAX

55 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55 OHMS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LONG-STUB

TRANSFORMER COUPLING

1.66:1

20 FT MAX 1:1.4

.75ZO

 

 

 

 

 

.75ZO

Note:

 

ZO defined per MIL-STD-1553B in section 4.5.1.5.2.1.

ZO

 

Figure 5. Bus Coupling Configuration

7

+ 16 hidden pages