CT2553 Datasheet, PDF (3/36 Pages) Aeroflex Circuit Technology – CT2553 / 2554 / 2555 / 2556 Advanced Integrated MUX (AIM) Hybrid FOR MIL-STD-1553

Values at nominal Power Supply Voltages unless otherwise specified
PARAMETER
VALUE
UNITS
Receiver
Differential Input Voltage
Differential Input Impedance
CMRR
40 max
7 min
40 min
Vp-p
KΩ
db
Transmitter (Direct Coupled)
Differential Output Voltage
Output Rise and Fall Times
Output Offset Voltage
6.0 min, 9.0 max
100 min, 300 max
±90 max
Vp-p
nsec
mV
Logic*
V_IH
V_IL
2.2 min
V
0.8 max
V
Clock
Power Supplies
+5V (Logic)
-15VA (Channel A Transceiver)
-15VB (Channel B Transceiver)
+5VA (Channel A)
+5VB (Channel B)
Current Drain* (Total Package)
+5V (Idle)
-15V (Idle)
+5V (25% Duty Cycle)
-15V (25% Duty Cycle)
16
+5±5%
-15±10%
-15±10%
+5±5%
+5±5%
(TYP)/max
(85)/170
(45)/80
(85)/170
(80)/130
MHZ
V
V
V
V
V
mA
mA
mA
mA
Temperature Range
Operating (Case)
Storage
−55 to +125
°C
−65 to +150
°C
Physical Characteristics
Size
78 pin DDIP
82 pin flatpack
2.1 x 1.87 x 0.25
(53 x 47.5 x 6.4)
2.19 x 1.6 x 0.175
(55.6 x 40.6 x 4.34)
in
(mm)
in
(mm)
* See Table 7 for pin loading characteristics.
Table 1 – CT2553 Specifications
GENERAL
The CT2553 is a complete MIL-STD-1553 bus
interface unit containing dual low-power
transceivers; Bus Controller (BC), Remote
Terminal (RTU), and Bus Monitor (MT) protocol
logic; 8K x 16-bit pseudo dual port RAM; and
memory management arbitration control circuitry.
The host processor interface consists of standard
control and interrupt signals, memory expansion
capability and non-multiplexed address and data
buses.
Control of the CT2553 is accomplished entirely
through the use of three internal registers and the
shared RAM. Transfers to and from the CT2553
are executed on a word-by-word basis ensuring
minimal wait time if contention occurs.
The specific mods of operation (1553
BC/RTU/MT) is software programmable. Memory
is configured into unique control and data block
areas based on the 1553 mode of operation.
External registers are also supported by the
CT2553 for manipulation of user data. In addition,
the CT2553 provides dynamic, online and
software initiated self-test capabilities.
Aeroflex Circuit Technology
3
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