CT2512 / CT2513 / CT2510 / CT2511
Dual Redundant Remote Terminal for MIL-STD-1553B
www.aeroflex.com/Avionics
May 23, 2005
FEATURES
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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
Designed for commercial, industrial and aerospace applications
MIL-PRF-38534 compliant devices available
Aeroflex-Plainview is a Class H & K MIL-PRF-38534 manufacturer
Packaging – Hermetic Metal
- 68 Pin, 2.1" x 1.87" x .25" Plug-In Type Package
- 82 Leads, 2.195" x 1.60" x .19" Flat Type Package
DESC SMD# 5962–87535
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
DESCRIPTION
The Aeroflex-Plainview 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.
See "Ordering Information" (last sheet) for CT2513 / CT2510 /
CT2511.
SCDCT2512 Rev E
ABSOLUTE MAXIMUM RATINGS
Parameter
Power Supply Voltage (V
CC
)
(Pins 18, 76 DDIP)
Power Supply Voltage (V
EE
)
(Pins 38, 57 DDIP)
Power Supply Voltage (V
CCL
)
(Pins 37, 58 / 51 DDIP)
Receiver Differential Input
(Pins 20, 59 / 74, 36 DDIP)
Receiver Input Voltage
(Pins 20, 59 / 74, 36 DDIP)
Driver Output Current
(Pins 56, 17 / 39, 77 DDIP)
Transmission Duty Cycle at T
C
= 125°C
Operating Case Temperature Range (T
C
)
Limits
-0.3 to +18.0
+0.3 to -18.0
-0.3 to +7.0
±20 (40Vp-p)
±15
+200
100
-55 to +125
Units
Volts
Volts
Volts
Volts
Volts
mA
%
°C
POWER AND THERMAL DATA (SINGLE TRANSCEIVER AND LOGIC SECTION)
Parameter/Conditions
Power Supply Voltage
Symbol
V
CC
V
EE
V
CCL
Ø
JC
P
C
I
CC
I
EE
2/
I
CCL
2/
I
CC
@ 25%
I
CC
@ 100%
Min
14.25
-14.25
4.5
-
-
-
-
-
-
-
Typ
15
-15
5
10
700
0
12
20
90
180
Max
15.75
-15.75
5.5
-
-
5
20
50
100
200
Units
V
V
V
°C/W
mW
mA
mA
mA
mA
mA
Thermal Resistance, most critical device
Power dissipation of most critical (hottest) device during
1/
continuous transmission (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 current transmitting at 1Mhz into a 35-ohm load at
3/
Point A in Figure 2
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.
ELECTRICAL CHARACTERISTICS (RECEIVER SECTION)
Parameter/Conditions
Differential input impedance
DC to 1MHz
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 2.
SCDCT2512 Rev E
Symbol
Z
IN
V
DIR
V
ICR
CMMR
V
TH
Min
9K
±20V
±10V
40
0.8
Typ
-
-
-
-
-
Max
-
-
-
-
1.1
Units
Ω
V
PK
V
PK
dB
V
PK
-
PK
2
ELECTRICAL CHARACTERISTICS (TRANSMITTER SECTION)
Parameter/Conditions
Differential output level at Point B, Figure 2 (145-ohm load)
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
Symbol
V
O
T
r
V
OS
V
NOI
Min
26
100
-
-
Typ
28
160
±20
-
Max
35
300
±90
10
Units
V
PK
-
PK
nS
mV
PK
mV
PK
-
PK
LOGIC CHARACTERISTICS
Symbol
V
IH
V
IL
I
IL
I
IH
I
IL
I
IH
V
OH
V
OL
Note 1:
Parameter
Input "1"
Input "0"
Input l
Input l
Input l
Input l
Output "1"
Output "0"
For INPUT pins 12,13,14,15, 53, 54, 55.
V
CC
= 5.5V
A. @ V
IL
= 0.4V
B. @ V
IH
= 2.4V
All remaining INPUTS other than in Note 1.
VCC = 5.5V
A. @ V
IL
= 0.4V
B. @ V
IH
= 2.4V
Min
2.4
-
-100
-
-20
-20
2.7
-
Typ
-
-
-
-
-
-
-
-
Max
-
0.7
-650
-650
+20
+20
-
0.4
Units
V
DC
V
DC
µA
µA
µA
µA
V
DC
V
DC
Conditions
Note 1A
Note 1B
Note 2A
Note 1B
Note 3A/4A
Note 3B/4B
Note 2:
Note 3:
For OUTPUT pins 4 through 11 and 43 through 50.
A. @ V
CC
= 4.5V and I
OH
= 3mA
B. @ V
CC
= 2.4V and I
OL
= 6mA
All remaining OUTPUTS other than in Note 3.
A. @ V
CC
= 4.5V and I
OH
= 2mA
B. @ V
CC
= 5.5V and I
OL
= 4mA
Note 4:
SCDCT2512 Rev E
3
CT2512
55Ω
TX DATA
CH A/B
GND
CT
}
Taps at N1:N3 For
Stub Coupling
(See Table)
B
For
Direct
A
Coupling
55Ω
TX DATA
CH A/B
(N1 : N2)
(See Table)
Turns Ratio
N1:N2
N1:N3
Technitrol Part #
CT2512
1.4:1
2:1
T-1553-2
FIGURE 2 – TYPICAL DIRECT COUPLED CONFIGURATION
SCDCT2512 Rev E
4
SCDCT2512 Rev E
11µs ± .75µs
0
STATUS SYNC
4.5 ± 0.5µs
5µs ±0.5µs
2.5µs MAX
16µs max
15
14
13
0
P
DATA SYNC
15
14
13
P
0
P
250ns MAX
250ns MAX
DON’T CARE
160ns
DATA WORD FROM SUBSYSTEM STROBED IN
1µs
4.5µs
R/W
SUB ADDRESS
PREVIOUS STATE
COMMAND SYNC
15
14
13
1
NBGT
DTREQ
DTGRT
DTACK
DTSTB
INCMD
5
ADDRESS = 00h
WORD COUNT
TRISTATE
A5 (D/C)
STATEN
A11 (T/R)
A6 - A10
A0 - A4
ADDRESS = 01h
STATUS WORD
TRISTATE
TRISTATE
DB0 - DB4
COMMAND WORD
DATA WORD FROM SUBSYSTEM
BUFFENA
ILLCMD STROBED IN
3µs (STATUS BITS STROBED IN)
(SRQ,BUSY,SSFLAG,RDBC,RTFLAG)
FIGURE 3 – TIMING DIAGRAM, TRANSMIT ONE WORD
京公网安备 11010802033920号
EEWORLD
