CT2565 Datasheet, PDF (3/31 Pages) Aeroflex Circuit Technology – CT2565 Bus Controller, Remote Terminal and BUS Monitor FOR MIL-STD-1553B

Values at nominal Power Supply Voltages unless otherwise specified
PARAMETER
VALUE
UNITS
Logic
V_IH
V_IL
V_OH
V_OL
I_IH
I_IL
I_OL *
I_OH *
C_IN (f = 1MHz)
C_OUT (f = 1MHz)
Power Supply
+5VDC
Tolerances
Supply Current
Internal Decoupling
2.0 min
V
0.8 max
V
3.7 min
V
0.4 max
V
±100 max
µA
-0.4 max
mA
±1.2 max
mA
±0.4 max
mA
20 max
pF
20 max
pF
±10 max
%
50 typ (70 max)
mA
1.5 typ
µF
Temperature Range
Operating (Case)
Storage
−55 to +125
°C
−65 to +150
°C
Physical Characteristics
Size
78 pin DDIP
82 pin flatpack
Weight
1.9 x 2.10 x 0.25
(48.30 x 53.34 x 6.35)
1.6 x 2.19 x 0.15
(40.64 x 55.63 x 3.81)
1.7 (48)
in
(mm)
in
(mm)
oz (g)
* I_OL and I_OH parameters are indicated for all logic outputs except Data Bus (DB0 – DB15) which are ±5mA for
both parameters.
Table 1 – CT2565 Specifications
GENERAL
The CT2565 uses a custom CMOS ASIC for
protocol logic and I/O buffering to provide low
power dissipation in its small package.
The CT2565 performs a continuous on-line
Built-In-Test (BIT); in this test the last transmitted
word of each message transfer is wrapped
around through the active receiver channel and
verified against the captured encoded word. A
user-defined loop test under subsystem control
can also be implemented. Numerous error flags
are provided to the subsystem including
message error, status error, response time out
and loop test error.
An external 12 MHz, TTL clock connected to Pin
39 is required.
Where appropriate, references to signal names
and their associated pin numbers for the 78 pin
DDIP package are made throughout this
document. For flatpack model pin numbers, refer
to Table 10.
BC/RTU/MT Initialization
The CT2565 provides BC, RTU, and MT
operating modes. The operating mode if
dynamically selectable through two static control
inputs as listed in Table 2. It is recommended
that a master RESET signal be issued (80ns min)
prior to mode selection to clear the internal
registers.
MIL-STD-1553 Word Types
Figure 2 illustrates the three MIL-STD-1553 word
types: Command, Data, and Status.
Aeroflex Circuit Technology
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SCDCT2565 REV B 8/10/99 Plainview NY [phone]