eroflex Circuit Technology – Data Bus Modules For The Future © SCDCT2512 REV D 3/19/02
Features
• CT2512 Replaces DDC BUS-65112 and BUS-65117
• CT2513 Replaces DDC BUS-65113 and BUS-65118
• CT2510 Replaces DDC BUS-65110 and BUS-65120
• CT2511 Replaces DDC BUS-65111 and BUS-65121
• 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
• Approved DESC SMD# 5962–87535
General Description
The CT2512 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 CT2512 is a pin-for-pin functional equivalent of the DDC BUS-65112/117 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 -55°C to + 125°C. Aeroflex is a MIL-PRF-38534 Certified
Manufacturer.
See "Ordering Information" (last sheet) for CT2513 / CT2510 / CT2511.
Figure 1 – Functional Block Diagram
DB0-DB15
A0-A11
ERROR FLAG
TIMING FLAGS
STATUS BITS
I/O
INTERFACE
MIL-STD-1553B
PROTOCOL
AND
BIT
PROCESSING
LOGIC
ENCODER/
DECODER
ENCODER/
DECODER
DUAL
TRANSCEIVER
DATA BUS A
DATA BUS B
CIRCUIT TECHNOLOGY
www.aeroflex.com
CT2512 / CT2513 / CT2510 / CT2511
Dual Redundant Remote Terminal
FOR MIL-STD-1553B
F
I
E
I
D
C
E
R
T
A
E
R
O
F
L
E
X
L
A
B
S
I
N
C.
ISO
9001
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Absolute Maximum Ratings
Parameter Limits Units
Power Supply Voltage (VCC)
(Pins 18, 76)
-0.3 to +18.0 Volts
Power Supply Voltage (VEE)
(Pins 38, 57)
+0.3 to -18.0 Volts
Power Supply Voltage (VCCL)
(Pins 37, 58 / 51)
-0.3 to +7.0 Volts
Receiver Differential Input
(Pins 20, 59 / 74, 36)
±20 (40Vp-p) Volts
Receiver Input Voltage
(Pins 20, 59 / 74, 36)
±15 Volts
Driver Output Current
(Pins 56, 17 / 39, 77)
+200 mA
Transmission Duty Cycle at TC = 125°C 100 %
Operating Case Temperature Range (TC) -55 to +125 °C
Power and Thermal Data (Single Transceiver and Logic Section)
Parameter/Conditions Symbol Min Typ Max Units
Power Supply Voltage VCC
VEE
VCCL
14.25
-14.25
4.5
15
-15
5
15.75
-15.75
5.5
V
V
V
Thermal Resistance, most critical device ØJC -10 -°C/W
Power dissipation of most critical (hottest) device during
continuous transmission (100% duty cycle)
1/
PC-700 -mW
Total supply current standby mode, or transmitting at
less than 1% duty cycle (e.g. 20us of transmission
every 2ms or longer interval)
ICC
IEE 2/
ICCL 2/
-
-
-
0
12
20
5
20
50
mA
mA
mA
Total supply current transmitting at 1Mhz into a 35-ohm
load at point A in Figure 2
3/
ICC @ 25%
ICC @ 100%
-
-
90
180
100
200
mA
mA
Notes
1/ Decreases linearly to zero at zero duty cycle.
2/ Limit does not change with mode of operation or duty cycle.
3/ Decreases linearly to applicable "standby" values at zero duty cycle.
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Electrical Characteristics (Receiver Section)
Parameter/Conditions Symbol Min Typ Max Units
Differential input impedance
DC to 1MHz ZIN 9K - - V
Differential voltage range VDIR ±20V - - Vpeak
Input common mode voltage
range VICR ±10V - - Vpeak
Common mode rejection ratio
(from point A, Figure 1) CMMR 40 - - dB
Threshold characteristics
(Sine wave at 1MHz)
Note: Threshold voltages refer to point A, Figure 2. Vth 0.8 -1.1 Vp-p
Electrical Characteristics (Transmitter Section)
Parameter/Conditions Symbol Min Typ Max Units
Differential output level at point B, Figure 1 (145 ohm load) VO26 28 35 Vp-p
Rise and Fall times (10% to 90% of p-p output) T
r100 160 300 nS
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
VOS -±20 ±90 mV Vpeak
Differential output noise VNOI - - 10 mV pp
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Logic Characteristics
Symbol Parameter Min Typ Max Units Conditions
VIH Input "1" 2.4 - - VDC
VIL Input "0" - - 0.7 VDC
IIL Input l -100 --650 µA Note 1A
IIH Input l - - -650 µA Note 1B
IIL Input l -20 -+20 µA Note 2A
IIH Input l -20 -+20 µA Note 1B
VOH Output "1" 2.7 - - VDC Note 3A/4A
VOL Output "0" - - 0.4 VDC 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
Note 2: All remaining INPUTS other than in Note 1.
VCC = 5.5V
A. @ VIL = 0.4V
B. @ VIH = 2.4V
Note 3: For OUTPUT pins 4 through 11 and 43 through 50.
A. @ VCC = 4.5V and IOH = 3mA
B. @ VCC = 2.4V and IOL = 6mA
Note 4: All remaining OUTPUTS other than in Note 3.
A. @ VCC = 4.5V and IOH = 2mA
B. @ VCC = 5.5V and IOL = 4mA
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Taps at N1:N3 For
Stub Coupling
(See Table)
CT }
Figure 2 – Typical Direct Coupled Configuration
B A For
Direct
Coupling
55Ω
55Ω
(N1 : N2)
(See Table)
Turns R a t i o CT2 51 2
N1:N2 1.4:1
N1:N3 2:1
Technitrol Part # T-1553-2
CT2512
CH A/B
CH A/B
GND
TX DATA
TX DATA
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Figure 3 – Timing Diagram, Transmit One Word
NBGT
INCMD
DTREQ
DTGRT
DTACK
STATEN
A5 (D/C)
DTSTB
A11 (T/R)
R/W
A6 - A10
A0 - A4
DB0 - DB4
BUFFENA
TRISTATE
COMMAND WORD
ILLCMD STROBED IN 3µs (STATUS BITS STROBED IN)
(SRQ,BUSY,SSFLAG,RDBC,RTFLAG)
TRISTATE TRISTATE
WORD COUNT STATUS WORD
DATA WORD FROM SUBSYSTEM
ADDRESS = 00h ADDRESS = 01h
SUB ADDRESS
PREVIOUS STATE
4.5µs
1µs
160ns
250ns MAX
2.5µs MAX
4.5 ± 0.5µs
11µs ± .75µs
16µs max
250ns MAX
DATA WORD FROM SUBSYSTEM STROBED IN
DON’T CARE
5µs ±0.5µs
STATUS SYNC 15 14 13 0 P DATA SYNC 15 14 13 0 P
COMMAND SYNC 15 14 13 1 0 P
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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9.5µs ± 0.75µs
NBGT
INCMD
DTREQ
DTGRT
DTACK
STATEN
A5 (D/C)
DTSTB
A11 (T/R)
R/W
A6 - A10
A0 - A4
DB0 - DB15
BUFFENA
TRISTATE
COMMAND WORD
ILLCMD STROBED IN
3µs (STATUS BITS STROBED IN)
(SRQ,BUSY,SSFLAG,RDBC,RTFLAG)
TRISTATE TRISTATE
WORD COUNT STATUS WORD
RECEIVE DATA WORD
ADDRESS = 00h ADDRESS = 01h
SUB ADDRESS
PREVIOUS STATE
1µs
160ns
250ns MAX
2.5µs MAX
4.5 ± 0.5µs
16µs max
250ns MAX
5µs ±0.5µs
GBR
STATUS WORD
4.5µs FOR HANDSHAKES < 3.5µs
DON’T CARE
STATUS SYNC 8 7 6 5 0 P
4.5 ± 0.5µs
250ns FOR HANDSHAKES > 3.5µs
Figure 4 – Timing Diagram, Receive One Word
COMMAND SYNC 1 0 P DATA SYNC 15 14 13 12 11 0 P
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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NBGT
INCMD
DTREQ
DTGRT
DTACK
STATEN
A5 (D/C)
DTSTB
GBR
R/W
A6 - A10
A11 (T/R)
DB0 - DB15
BUFFENA
TRISTATE
COMMAND WORD
WORD COUNT
ADDRESS = 00h
SUB ADDRESS
PREVIOUS STATE
160ns
2.25µs MAX
4.5 ± 0.5µs
250ns MAX DON’T CARE
TX STATUS SYNC 15 14 13
TRISTATE TRISTATE TRISTATE TX COMMAND WORD
4.0 ± 0.5µs
250ns MAX
1µs
A0 - A4
TRANSMITTING RT
RESPONSE TIME
Figure 5 – Timing Diagram, RT to RT Receive One Word (Part A)
RX COMMAND SYNC 15 14 13 1 0 P TX COMMAND SYNC 15 14 13 12 11 10 0 P
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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0 P DATA SYNC 15 14 13 1 0 P STATUS SYNC 8765 10P
NBGT
INCMD
DTREQ
DTGRT
DTACK
STATEN
A5 (D/C)
DTSTB
GBR
R/W
A6 - A10
A11 (T/R)
DB0 - DB15
BUFFENA
500ns TYP
4.5 ± 0.5µs
250ns MAX DON’T CARE
TRISTATE
250ns FOR HANDSHAKES > 3.5µs
A0 - A4
TRISTATE
TX RT STATUS RESPONSE
RECEIVE DATA WORD STATUS WORD
ADDRESS = 01h
4.5 ± 0.5µs
4.5 µs FOR HANDSHAKES < 3.5µs
5 ± 0.5µs
16µs MAX
9.5µs ±0.75µs
Figure 5 – Timing Diagram, RT to RT Receive One Word (Part B)
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Figure 6 – TIMING DIAGRAM, COMMAND WORD TRANSFER
166ns
0ns MIN
2.25µs MAX
250ns MAX
500ns
166ns
666ns
1µs
166ns
166ns
WHEN T/R = 0
VALID
SUB ADDRESS
ADDRESS = 00h OR MODE
WORD
COUNT
TRISTATE TRISTATETRISTATE
75ns MAX 75ns MAX
75ns
MAX 75ns MAX
COMMAND WORD
NOTE:
1. R/W = LOGIC 0
BUFFENA
DB0 - DB15
A0 - A4
A6 - A10
A5 (D/C)
A11 (T/R)
INCMD
DTSTB
DTACK
DTGRT
DTREQ
NBGT
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Figure 7 – Timing Diagram, Status Word Transfer
TRISTATE TRISTATE
STATEN
GBR
DTSTB
DB0 - DB15
BUFFENA
Receive Only
500ns
166ns
166ns
75ns
75ns
NOTE:
1. R/W = 0
TRISTATE TRISTATE
BITEN
DTSTB
DB0 - DB15
BUFFENA
500 ns
166ns
166ns
75ns
75ns
NOTE:
1. R/W = 0
STATUS
BIT WORD
Figure 8 – Timing Diagram, Bit Word Transfer
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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500ns TYP
0ns MIN DON’T CARE
250ns MAX
166ns TYP
166ns TYP
75ns MAX 75ns MAX
50ns MAX
RECEIVED DATA WORD
ADDRESS or MODE *ADDRESS +1
VALID TRISTATE
BUFFENA
DB0 - DB15
A0 - A4
DTSTB
DTACK
DTGRT
DTREQ
Figure 9 – Timing Diagram, Data to Subsystem
500ns TYP
0ns MIN DON’T CARE
250ns MAX
166ns TYP
166ns TYP
ADDRESS or MODE *ADDRESS +1
DB0 - DB15
A0 - A4
DTSTB
DTACK
DTGRT
DTREQ
Figure 10 – Timing Diagram, Data from Subsystem
R/W
50ns MIN
50ns MAX
50ns MAX
TRANSMIT DATA WORD VALID
NOTES:
1. R/W = Logic 0
2. (*) = Non-Mode Only
3. BUFFENA = DTACK
NOTES:
1. (*) = Non-Mode Only
2. Word Count for Mode Code
3. BUFFENA = Don’t Care
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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Figure 11 – Timing Diagram, Data Transfers to Subsystem (No Handshake)
166ns TYP
250ns MIN 250ns MIN
VALID DON’T CAREDON’T CARE
RECEIVED DATA
TRISTATE
ADDRESS OR MODE FIELD
TRISTATE
DTSTB
BUFFENA
DB0 - DB15
A0 - A4
NOTES:
1. R/W = LOGIC 0
2. DTGRT = DTREQ = LOGIC 1
3. INCMD = DAT/CMD ARE LOGIC 1
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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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
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
-15V B
+15V B
+5V B
GND B
RXDATA B
RXDATA B
A3
A2
A1
A0
DTGRT
DTACK
INCMD
A4
HSFAIL
R/W
DISTR
GBR
A5(DAT/CMD)
12MHz 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
+15V
-15V
TXDATA A
TXDATA A
STATEN
NBGT
CT2512 Pin Out Description (DDIP)
Pin
#Function Pin
#Function
1 A10 40 NBGT
2A841 A9
3A642 A7
4DB143 DB0
5DB344 DB2
6DB545 DB4
7DB746 DB6
8DB947 DB8
9 DB11 48 DB10
10 DB13 49 DB12
11 DB15 50 DB14
12 BRO ENA 51 +5V
13 ADDRE 52 GND
14 ADDRC 53 ADDRD
15 ADDRA 54 ADDRB
16 RTADERR 55 ADDRP
17 TXDATA B 56 TXDATA B
18 +15V B 57 -15V B
19 GND B 58 +5V B
20 RXDATA B 59 RXDATA B
21 A3 60 A2
22 A1 61 A0
23 DTGRT 62 DTACK
24 INCMD 63 A4
25 HSFAIL 64 R/W
26 DTSTR 65 GBR
27 A5 (DAT/CMD) 66 12MHz IN
28 RTFAIL 67 BUF ENA
29 DTREQ 68 RESET
30 ADBC 69 RTFLAG
31 TP2 (NC) 70 TP1 (NC)
32 A11 (T/R)71 BUSY
33 ILLCMD 72 SSFLAG
34 SRQ 73 ME
35 BITEN 74 RXDATA A
36 RXDATA A 75 GND A
37 +5V A 76 +15V A
38 -15V A 77 TXDATA A
3 9 T X DATA A 7 8 STAT E N
CT2512
MIL-STD-1553B
REMOTE TERMINAL
PROTOCOL UNIT
Figure 12 – DDIP Pin Connection Diagram, CT2512 and Pinout Table
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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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
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
-15V B
+15V B
+5V B
GND B
RXDATA B
RXDATA B
A3
A2
A1
A0
DTGRT
DTACK
INCMD
A4
HSFAIL
R/W
DISTR
GBR
A5(DAT/CMD)
12MHz 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
+15V
-15V
TXDATA A
TXDATA A
STATEN
NBGT
CT2512 Pin Out Description (FP)
Pin
#Function Pin
#Function
1NC42 NC
2 A10 43 NBGT
3A944STATEN
4 A8 45 TXDATA A
5A746TXDATA
A
6A647-15V A
7 DB0 48 +15V A
8 DB1 49 +5V A
9 DB2 50 GND A
10 DB3 51 RXDATA A
11 DB4 52 RXDATA A
12 DB5 53 BITEN
13 DB6 54 ME
14 DB7 55 SRQ
15 DB8 56 SSFLAG
16 DB9 57 ILLCMD
17 DB10 58 BUSY
18 DB11 59 A11 (T/R)
19 DB12 60 TP1
20 DB13 61 TP2
21 DB14 62 RTFLAG
22 DB15 63 ADBC
23 +5V 64 RESET
24 BRO ENA 65 DTREQ
25 GND 66 BUF ENA
26 ADDRE 67 RTFAIL
27 ADDRD 68 12MHz IN
28 ADDRC 69 A5 (DAT/CMD)
29 ADDRB 70 GBR
30 ADDRA 71 DTSTR
31 ADDRP 72 R/W
32 RTADERR 73 HSFAIL
33 TXDATA B 74 A4
34 TXDATA B75 INCMD
35 -15V B 76 DTACK
36 +15V B 77 DTGRT
37 +5V B 78 A0
38 GND B 79 A1
39 RXDATA B80 A2
40 RXDATA B 81 A3
41 NC 82 NC
CT2512-FP
MIL-STD-1553B
REMOTE TERMINAL
PROTOCOL UNIT
Figure 13 – Flat package Pin Connection Diagram, CT2512 and Pinout Table
1
2
N/C
N/C N/C
N/C
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
82
81
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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.100
2.100
1.500
TYP
Lead 1 & ESD
Designator
1.900
1.800
Pin 19 Pin 20
Pin 59
Pin 41
Pin 2 .050
TYP
1.650
1.870
.100
.110 Pin 1
.250
.250
MAX
Pin 39 Pin 40
Pin 78
Pin 22
Pin 21
Pin 60
.018 DIA
TYP
.105
.190
MAX
.010
±.002
.015
2.000
Pin 42
.095
Pin 41
2.195
MAX
Lead 1 & ESD
Designator
1.600
MAX
Designator
1.600
MAX
.500
TYP
.050 Lead Centers
41 Leads/Side
(4 Places)
Pin 82
Flat Package Outline
Plug In Package Outline
.050
Aeroflex Circuit Technology SCDCT2512 REV D 3/19/02 Plainview NY (516) 694-6700
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CIRCUIT TECHNOLOGY
Ordering Information
Model Number Screening DESC SMD Power Supply Package
CT2512 Military Temperature, -55°C to +125°C,
Screened to the individual test
methods of MIL-STD-883
5962-8753503X_ +5V, ±15V Plug in
CT2512-FP 5962-8753503Z_ Flat Package
* CT2513 - +5V, ±12V Plug in
* CT2513-FP - Flat Package
* CT2510 - +5V, -15V Plug in
* CT2510-FP - Flat Package
* CT2511 - +5V, -12V Plug in
* CT2511-FP - Flat Package
* Contact Factory
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11803
Telephone: (516) 694-6700
FAX: (516) 694-6715
Toll Free Inquiries: (800) 843-1553
Specifications subject to change without notice
www.aeroflex.com E-Mail: sales-act@aeroflex.com
