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CT 2542 Dual Redundant Remote Terminal
FOR MIL-STD-1553B
Features
* Replaces DDC BUS-65142 and BUS-65143 * Functions as a Complete Remote Terminal Unit * Supports 13 Mode Codes, Illegalization of Codes Allowed * Transfers Data with DMA Type Handshaking * Latched Outputs for Command Word and Word Count * 14 Bit Built-ln-Test Word Register * 4 Error Flag Outputs * Advanced Low Power VLSI Technology * DESC SMD# 5962-89798 Approved
CIRCUIT TECHNOLOGY
www.aeroflex.com
A E RO
F
LE
X LA
B
S
I NC .
C
ISO 9001
E
RTIFIED
General Description
The CT2542 contains 2 transceivers, 2 encoder/decoders, bit processors and complete Remote Terminal (RT) logic. The device is constructed using Aeroflex advanced VLSI custom chip and hybrid technology. It functions as a complete dual redundant MIL-STD-1553B RT Unit supporting all 13 mode codes for dual redundant operation. The CT2542 is a pin-for-pin functional equivalent of the DDC BUS-65142/143 and performs parallel data transfers with a DMA type handshake. Multiple error flag outputs and host access to many of the RT Status Word bits are just some of the features that make this part ideal for many RT applications. The unit has an operating range of -55C to + 125C. Aeroflex is a MIL-PRF-38534 Certified Manufacturer.
DATA BUS A DUAL TRANSCEIVER DATA BUS B
ENCODER/ DECODER
MIL-STD-1553B PROTOCOL AND BIT I/O INTERFACE
DB0-DB15 A0-A11 ERROR FLAG TIMING FLAGS STATUS BITS
ENCODER/ DECODER
PROCESSING LOGIC
Figure 1 - Functional Block Diagram
eroflex Circuit Technology - Data Bus Modules For The Future (c) SCDCT2542 REV C 8/11/98
Absolute Maximum Ratings
Parameter
Power Supply Voltage (VEE)
Limits
+0.3 to -18.0
Units
Volts
Power Supply Voltage (VCCL)
-0.3 to +7.0
Volts
Receiver Differential Input
20 (40Vp-p)
Volts
Receiver Input Voltage
15
Volts
Driver Output Current
+200
mA
Transmission Duty Cycle at TC = 125C
100
%
Operating Case Temperature Range (TC)
-55 to +125
C
Power and Thermal Data (Transceiver and Logic Section)
Parameter/Conditions
Power Supply Voltage
Symbol
VEE VCCL
Min
-14.25 4.5
Typ
-15 5
Max
-15.75 5.5
Units
V V
Power Dissipation of most critical (hottest) device in hybrid during continuous transmission (100% Duty Cycle) Thermal Resistance, most critical device Junction to case temperature rise of most critical device at 100% duty cycle Total supply current standby mode, or transmitting at less than 1% duty cycle (e.g. 20us of transmission every 2ms or longer interval) Total supply curren transmitting at 1Mhz into a 35-ohm load at point A in Figure 2
PC
350
mW Note 1
OJC TJC ICCL IEE IEE @ 50% IEE @ 100%
60 60 80 50 50 70 175 270
C/W C mA mA Note 2 mA Note 3 mA Note 3
Note 1: Decreases linearly to zero at zero duty cycle. Note 2: ICCL limit does not change with mode of operation or duty cycle. Note 3: Decreases linearly to applicable "standby" values at zero duty cycle.
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Electrical Characteristics (Receiver Section)
Parameter/Conditions
Differential input impedance DC to 1MHz, Point B, Figure 1 Differential voltage range Input common mode voltage range Common mode rejection ratio (from point A, Figure 1) Threshold characteristics (Sine wave at 1MHz) Note: Threshold voltages refer to point A, Figure 1.
Symbol
ZIN VDIR VICR CMMR
Min
2K 20V 10V 40
Typ
Max
Units
Vpeak Vpeak dB
Vth
0.6
1.2
Vp-p
Electrical Characteristics (Transmitter Section)
Parameter/Conditions
Differential output level at point B, Figure 1 (145 ohm load)
Symbol
VO Tr
Min
26
Typ
Max
35
Units
Vp-p
Rise and Fall times (10% to 90% of p-p output) Output offset at point A in Figure 2 (35-ohm load) 2.5us after mid-bit crossing of parity bit of last word of a 660us message Differential output noise
100
300
nS
VOS
20
90
mV Vpeak
VNOI
10
mV pp
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Logic Characteristics
Symbol
VIH VIL IIL IIH IIL IIH IIL IIH VOH VOL
Parameter
Input "1" Input "0" Input l Input l Input l Input l Input l Input l Output "1" Output "0"
Min
2.4
Typ
Max
0.7
Units
VDC VDC A A A A A A VDC VDC
Conditions
-80 -40 -20 -20 -20 -40 2.7
-400 -200 +20 +20 -200 -400 0.4
Note 1A Note 1B Note 2A Note 1B Note 5 Note 3A/4A Note 3B/4B
Note 1
For INPUT pins 12,13,14,15, 53, 54, 55. VCC= 5.5V A. @ VIL = 0.4V B. @ VIH = 2.4V All remaining INPUTS other than in Note 1. VCC= 5.5V A. @ VIL = 0.4V B. @ VIH = 2.4V For OUTPUT pins 4 through 11 and 43 through 50. A. @ VCC = 4.5V and IOH = 2mA B. @ VCC = 4.5V and IOL = 4mA All remaining OUTPUTS other than in Note 3. A. @ VCC = 4.5V and IOH = 1mA B. @ VCC = 4.5V and IOL = 2mA For INPUT pins 4-11, 43-50. VCC= 5.5V A. @ VIL = 0.4V B. @ VIH = 2.4V
Note 2
Note 3
Note 4
Note 5
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Transformer Coupled Stubs
STUB DATA TX/RX 2:1 ISOLATION 1 : 1.41 55
70
2542
DATA TX/RX
C
A
55 Zoi VCMT = 10 VPK DC to 2MHZ
Direct Coupled Stubs
STUB DATA TX/RX 1.4 :1 55
2542
DATA TX/RX
B
A
55 Zoi 35 35
NOTES: 1. Point C, Vo = 18 Vpp Minimum 2. Transformer self Impedance 3K at 1MHz 3. VCMT for transformer coupled stubs VCMD for direct coupled stubs
+ VCMD -
Figure 1 - Typical Bus Coupling
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Aeroflex Circuit Technology 11s .75s 1 STATUS SYNC 4.5 0.5s 6.5s 0.5s NBGT 2.1s MAX 15.5s max 15 14 13 0 P DATA SYNC 15 14 13 0 P 0 P DTGRT 100ns MAX 100ns MAX DON'T CARE DTSTB 125ns DATA WORD FROM SUBSYSTEM STROBED IN INCMD 1s 4.5s R/W SUB ADDRESS
PREVIOUS STATE
COMMAND SYNC
15
14
13
DTREQ
DTACK
6
A0 - A4 ADDRESS = 00h
WORD COUNT
TRISTATE
A5 (D/C)
STATEN
A11 (T/R)
A6 - A10
ADDRESS = 01h STATUS WORD
TRISTATE TRISTATE
DB0 - DB4 COMMAND WORD
DATA WORD FROM SUBSYSTEM
BUFFENA ILLCMD STROBED IN 1.1s (STATUS BITS STROBED IN) (SRQ,BUSY,SSFLAG,RDBC,RTFLAG)
SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Figure 3 - Timing Diagram, Transmit One Word
Aeroflex Circuit Technology 9.5s 0.75s DATA SYNC 4.5 0.5s 4.5 0.5s 2.1s MAX 15.5s max 15 14 13 12 11 0 P STATUS SYNC 8 7 6 5 0 P 6.5s 0.5s 100ns MAX 100ns MAX DON'T CARE 125ns 1s 250ns FOR HANDSHAKES > 3.5s 4.5s FOR HANDSHAKES < 3.5s
PREVIOUS STATE
COMMAND SYNC
1
0
P
NBGT
DTREQ
DTGRT
DTACK
DTSTB
INCMD
A5 (D/C)
7
SUB ADDRESS ADDRESS = 00h
WORD COUNT
TRISTATE
STATEN
GBR
A11 (T/R)
R/W
A6 - A10
A0 - A4
ADDRESS = 01h
STATUS WORD
TRISTATE TRISTATE
DB0 - DB15 COMMAND WORD
RECEIVE DATA WORD
STATUS WORD
BUFFENA 1.1s (STATUS BITS STROBED IN) (SRQ,BUSY,SSFLAG,RDBC,RTFLAG)
SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
ILLCMD STROBED IN
Figure 4 - Timing Diagram, Receive One Word
TRANSMITTING RT RESPONSE TIME 14 TX STATUS SYNC 15 13 1 0 P TX COMMAND SYNC 15 14 13 12 11 10 0 P 14 13
Aeroflex Circuit Technology 4.0 0.5s 2.1s MAX 100ns MAX DON'T CARE 250ns MAX SUB ADDRESS ADDRESS = 00h WORD COUNT
TRISTATE TRISTATE TRISTATE
RX COMMAND SYNC
15
4.5 0.5s
NBGT
DTREQ
DTGRT
DTACK
125ns
DTSTB
INCMD
8
1s
A5 (D/C)
STATEN
GBR
A11 (T/R)
PREVIOUS STATE
R/W
A6 - A10
A0 - A4
DB0 - DB15
TRISTATE
TX COMMAND WORD
COMMAND WORD
SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
BUFFENA
Figure 5 - Timing Diagram, RT to RT Receive One Word (Part A)
9.5s 0.75s 15 STATUS SYNC 8 7 6 5 1 0 P 14 13 1 0 P
Aeroflex Circuit Technology 4.5 0.5s 6.5 0.5s 15.5s MAX 100ns MAX DON'T CARE 250ns FOR HANDSHAKES > 3.5s 4.5 s FOR HANDSHAKES < 3.5s ADDRESS = 01h
TRISTATE TRISTATE
0
P
DATA SYNC
4.5 0.5s
NBGT
DTREQ
DTGRT
DTACK
DTSTB
INCMD
A5 (D/C)
9
RECEIVE DATA WORD
STATEN
GBR
A11 (T/R)
R/W
A6 - A10
A0 - A4
500ns TYP
DB0 - DB15
TX RT STATUS RESPONSE
STATUS WORD
SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
BUFFENA
Figure 5 - Timing Diagram, RT to RT Receive One Word (Part B)
NBGT 125ns DTREQ 0ns MIN 2.1s MAX DTGRT 100ns MAX DTACK 635ns DTSTB 125ns INCMD 1s 125ns 375ns
A5 (D/C) 125ns A11 (T/R) VALID
WHEN T/R = 0
A6 - A10
SUB ADDRESS
A0 - A4
WORD COUNT
ADDRESS = 00h OR MODE
75ns MAX DB0 - DB15
TRISTATE TRISTATE
75ns MAX
TRISTATE
75ns MAX BUFFENA
75ns MAX COMMAND WORD
NOTE: 1. R/W = LOGIC 0
Figure 6 - TIMING DIAGRAM, COMMAND WORD TRANSFER
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
STATEN
GBR
Receive Only 375ns 125ns
DTSTB 125ns 75ns DB0 - DB15
TRISTATE TRISTATE
STATUS 75ns
BUFFENA NOTE: 1. R/W = LOGIC 0
Figure 7 - Timing Diagram, Status Word Transfer
BITEN 375 ns 125ns DTSTB 125ns 75ns DB0 - DB15
TRISTATE
BIT WORD
TRISTATE
75ns BUFFENA
NOTE: 1. R/W = LOGIC 0
Figure 8 - Timing Diagram, Bit Word Transfer
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
DTREQ 0ns MIN DTGRT 100ns MAX DTACK 125ns TYP DTSTB 125ns TYP 75ns MAX DB0 - DB15 VALID
DON'T CARE
375ns TYP
75ns MAX
TRISTATE
RECEIVED DATA WORD BUFFENA 50ns MAX A0 - A4 NOTES: 1. R/W = Logic 0 2. (*) = Non-Mode Only 3. BUFFENA = DTACK ADDRESS or MODE *ADDRESS +1
Figure 9 - Timing Diagram, Data to Subsystem
DTREQ 0ns MIN DTGRT 100ns MAX DTACK 125ns TYP DTSTB 125ns TYP R/W 50ns MIN DB0 - DB15 TRANSMIT DATA WORD VALID 50ns MAX 50ns MAX *ADDRESS +1 375ns TYP DON'T CARE
A0 - A4 NOTES: 1. (*) = Non-Mode Only 2. Word Count for Mode Code 3. BUFFENA = Don't Care
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ADDRESS or MODE
Figure 10 - Timing Diagram, Data from Subsystem
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
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DTSTB 125ns TYP 125ns MIN 125ns MIN VALID DON'T CARE RECEIVED DATA
TRISTATE TRISTATE
DB0 - DB15
DON'T CARE
BUFFENA
13
A0 - A4
ADDRESS OR MODE FIELD
NOTES: 1. R/W = LOGIC 0 2. DTGRT = DTREQ = LOGIC 1 3. INCMD = DAT/CMD ARE LOGIC 1
SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Figure 11 - Timing Diagram, Data Transfers to Subsystem (No Handshake)
CT2542 Pin Out Description (DDIP)
Pin #
1 2 3 4
Function
A10 A8 A6 DB1 DB3 DB5 DB7 DB9 DB11 DB13 DB15 BRO ENA ADDRE ADDRC ADDRA RTADERR TXDATA B N/C GND B RXDATA B A3 A1 DTGRT INCMD HSFAIL DTSTR A5 (DAT/CMD) RTFAIL DTREQ ADBC TP2 (NC) A11 (T/R) ILLCMD SRQ BITEN RXDATA A +5V A -VEE A TXDATA A
Pin #
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
Function
NBGT A9 A7 DB0 DB2 DB4 DB6 DB8 DB10 DB12 DB14 +5V GND ADDRD ADDRB ADDRP TXDATA B -VEE B +5V B RXDATA B A2 A0 DTACK A4 R/W GBR 16MHz IN BUF ENA RESET RTFLAG TP1 (NC) BUSY SSFLAG ME RXDATA A GND A N/C TXDATA A STATEN
1 41 2 42 3 43 4 44 5 45 6 46 7 47 8 48 9 49 10 50 11 51 12 52 13 53 14 54 15 55 16 56 17 57 18 58 19 59 20
A10 A9 A8 A7 A6 DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 DB12 DB13 DB14 DB15 +5V BRO ENA GND ADDRE ADDRD ADDRC ADDRB ADDRA ADDRP RTADERR TXDATA B TXDATA B -VEE B N/C +5V B GND B RXDATA B RXDATA B
A3 A2 A1 A0 MIL-STD-1553B DTGRT REMOTE TERMINAL DTACK PROTOCOL UNIT INCMD A4 HSFAIL R/W DISTR GBR A5(DAT/CMD) 16MHz IN RTFAIL BUF ENA DTREQ RESET ADBC RTFLAG TP2 TP1 A11(T/R) BUSY ILLCMD SSFLAG SRQ ME BITEN RXDATA A RXDATA A GND A +5V A N/C -VEE A TXDATA A TXDATA A STATEN NBGT
CT2542
21 60 22 61 23 62 24 63 25 64 26 65 27 66 28 67 29 68 30 69 31 70 32 71 33 72 34 73 35 74 36 75 37 76 38 77 39 78 40
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
Figure 12 - DDIP Pin Connection Diagram, CT2542 and Pinout Table
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
CT2542 Pin Out Description (FP)
Pin #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
Function
NC A10 A9 A8 A7 A6 DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 DB12 DB13 DB14 DB15 +5V BRO ENA GND ADDRE ADDRD ADDRC ADDRB ADDRA ADDRP RTADERR TXDATA B TXDATA B -VEE B +15V B N/C GND B RXDATA B RXDATA B NC
Pin #
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82
Function
NC NBGT STATEN TXDATA A TXDATA A VEE A N/C +5V A GND A RXDATA A RXDATA A BITEN ME SRQ SSFLAG ILLCMD BUSY A11 (T/R) TP1 TP2 RTFLAG ADBC RESET DTREQ BUF ENA RTFAIL 16MHz IN A5 (DAT/CMD) GBR DTSTR R/W HSFAIL A4 INCMD DTACK DTGRT A0 A1 A2 A3 NC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
N/C A10 A9 A8 A7 A6 DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 DB12 DB13 DB14 DB15 +5V BR0 ENA GND ADDRE ADDRD ADDRC ADDRB ADDRA ADDRP RTADERR TXDATA B TXDATA B -VEE B N/C +5V B GND B RXDATA B RXDATA B N/C
N/C A3 A2 A1 MIL-STD-1553B A0 REMOTE TERMINAL DTGRT DTACK PROTOCOL UNIT INCMD A4 HSFAIL R/W DISTR GBR A5(DAT/CMD) 16MHz IN RTFAIL BUF ENA DTREQ RESET ADBC RTFLAG TP2 TP1 A11(T/R) BUSY ILLCMD SSFLAG SRQ ME BITEN RXDATA A RXDATA A GND A +5V A N/C -VEE A TXDATA A TXDATA A STATEN NBGT N/C
CT2542-FP
82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42
Figure 13 - Flat package Pin Connection Diagram, CT2542 and Pinout Table
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
Plug In Package Outline
2.100
1.870 Lead 1 & ESD Designator
.100 .110
Pin 1 Pin 2
1.900
.050 Pin 19 TYP Pin 20 Pin 59 Pin 41 .018 DIA TYP
.250 MAX
1.650 1.500
Pin 60 Pin 78 Pin 21 Pin 22 .100 TYP Pin 39 Pin 40
.250
1.800
Flat Package Outline
.050 Pin 82
2.200 MAX
.015 Pin 42
.010 .002 .181 MAX
1.610 MAX Lead 1 & ESD Designator .400 MIN .095 (4 Places) 2.000 .050 Lead Centers 41 Leads/Side
16
Pin 41
.080
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700
CIRCUIT TECHNOLOGY
Ordering Information
Model Number CT2542 CT2542-FP CT2542-701 CT2542-FP-701 CT2542 CT2542 CT2542-FP CT2542-FP Screening Military Temperature, -55C to +125C, Screened to the individual test methods of MIL-STD-883 Industrial Temperature, -40C to +85C, No Burn-in DESC SMD # 5962-8979803XA 5962-8979803XC 5962-8979803YA 5962-8979803YC Package Plug in Flat Package Plug in Flat Package Plug in Plug in Flat Package Flat Package
Aeroflex Circuit Technology 35 South Service Road Plainview New York 11830
Specifications subject to change without notice.
Aeroflex Circuit Technology
Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800)THE-1553
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SCDCT2542 REV C 8/11/98 Plainview NY (516) 694-6700

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