Aeroflex CT2100-400 Ct2100-400 microprocessor controlled quad solid state relay Datasheet

CT2100-400
MICROPROCESSOR CONTROLLED
QUAD SOLID STATE RELAY
Features
• 4 Independent 1.0 Amp Switches
CIRCUIT TECHNOLOGY
• 600 Volts Isolation between Switches
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• Operates from a 5 Volt Logic and 15 Volt Bias
• D.C. Trip Level 1.3 Amps
• Switches are Designed to withstand Electro-Magnetic Pulse (EMP)
• Functions and Operates from -55°C to +125°C in Military Environments
• Processed and Screened to Mil-STD-883 Specifications
The CT2100-400 is a microprocessor controlled, quad solid state relay that incorporates fully isolated switch
control and built-in test. The hybrid provides 600 Volts isolation between control inputs and switch outputs.
Internal control and status registers provide analog switch function which operates via simple I/O commands.
Block Diagram
4
PRESET/CLEAR1-4
WRITE
INIT
4
Smart Switch
1
4
Switch
Control
Latch
S1+
TRIP
CS
A0
A1
S1–
600 Volt
Isolation
Sense
DATA0-7
8 Bit
2
8
8
ON/OFF
and
TRIP
Switch
Status
ON/OFF
&
TRIP
Smart Switch
2
S2+
S2–
READ
Smart Switch
3
Smart Switch
4
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S3+
S3–
S4+
S4–
DESCRIPTION
The CT2100-400 is a quad solid
state relay. The device has been
designed to provide an interface
which operates as a simple
computer I/O port. The switches
are controlled by a single data
word which the processor writes to
an internal control latch. In
addition to the basic switch
function ON/OFF and Trip flags
provide the operational status of
each of the four switches. These
signals are internally contained in
an 8 bit status register which is
accessible by an I/O read
command. The switches may also
be controlled asynchronously
(without write strobes) by use of
separate initialization pins. These
may also be used for Power-Up
control in a microprocessor based
system.
SWITCH CONTROL
The CT2100-400 has four
independent
fully
isolated
switches which may be used as
high side or low side drivers. The
isolated design allows the user
to parallel devices or place them
in series as required for the
specific application. Control of
the switch is via I/O write
(Address 0) or asynchronous
control lines. The CT2100-400
has an internal switch control
latch which is updated via
subsystem
I/O
write
as
illustrated in Figure 2. Once the
I/O write is completed the switch
is latched into the OFF or ON
state. The switch may also be
controlled
via
individual
PRESET and CLEAR lines.
These lines asynchronously
drive the switch control latch
without the need for a write
strobe. The PRESET/CLEAR
inputs are enabled by the
initialize pin.
SWITCH STATUS
Each switch in the CT2100-400
is monitored for circuit Trip and
ON/OFF. This data is contained
in a 8 bit status register which is
accessible via an I/O read
(Address 0) command. The
timing for the I/O read is shown
in Figure 1. The Trip and
ON/OFF flags are provided to
the system to assess the
operational capability of the
switch versus the status of the
controlled load. The Trip bit is
set high when the switch has
conducted between 1.1 to 3
amps of current based on the
time to trip curve in Figure 3.
The over current DC trip point is
typically 1.3 amps.
Table 1 — Absolute Maximum Ratings
Supply Voltage (VCC) — Pin 20
-0.5 to +7.0 Volts DC
Supply Voltage (VEE) — Pin 1
-.5 to +18 Volts DC
Logic Input Voltage — Pins 2-9, 12-19
-0.5 to VCC +.5 Volts DC
Switch Point Voltage — Pins 39-40, 29-32, 21-22
-600 to +600 Volts (200 ns)
80 Volts DC
Storage Temperature Range
-65°C to +150 °C
Table 2 — Recommended Operating Conditions
Supply Voltage (VCC) — Pin 20
+5.0 VDC ±10%
Supply Voltage (VEE) — Pin 1
+14.25 to +15.75 VDC
Logic Input Maximum Voltage (High) — Pins 2-9, 12-19
+3.3 V
Logic Input Minimum Voltage (Low) — Pins 2-9, 12-19
+0.8 V
Switch Point Voltage — Pins 39-40, 29-32, 21-22
60 VDC
Operating Temperature Range
-55°C to +125 °C
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Timing Waveforms
Th
SWITCH
CONTROL
DATA
Th
STATUS
DATA
VALID
VALID
Tsu
Td
WRITE/ CS
READ/ CS
Tpw
Tpw
Figure 1
Figure 2
Table 3 — Timing Characteristics
READ Cycle
WRITE Cycle
Parameter
Sym
Min
Max
Units
Pulse Width
TPW
100
-
nsec
Data Delay
TD
-
50
Hold Time
TD
10
-
Parameter
Sym
Min
Max
Units
Pulse Width
TPW
100
-
nsec
nsec
Set-up Time
TS
25
-
nsec
nsec
Hold Time
TH
10
-
nsec
Table 4 — Switch Data
Parameter
Sym
Min
Max
Units
DC Continous Rated Current
IC
-
1
Amps
DC Trip Current
(For Time to Trip Refer to Figure 3)
IOT
1.1
1.5
Amps
On Resistance
RON
-
0.6
Ohms
IL
-
40
µA
Switch Turn-on Time
TSD
-
2
msec
Isolation
VISO
600
-
Volts
Output Leakage Current at 80 VDC
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Table 5 — Bus Bit Definition
ADDRESS = 0
BIT
WRITE CYCLE
READ CYCLE
D0
S1 ON/OFF 0 = ON
S1 ON/OFF status (Bit = 0)(When switch on)
D1
Not Used
S1 TRIP status (Bit = 1)(When short circuit protection active))
D2
S2 ON/OFF 0 = ON
S2 ON/OFF Status
D3
Not Used
S2 TRIP Status
D4
S3 ON/OFF 0 = ON
S3 ON/OFF Status
D5
Not Used
S3 TRIP Status
D6
S4 ON/OFF 0 = ON
S4 ON/OFF Status
D7
Not Used
S4 TRIP Status
ADDRESS = 1 (Wrap Around)
D0 – D7
Bit = 1 or 0
Whatever was written in the write cycle will be read
ADDRESS = 2
D0
X \1
0 = Command On (Signal being sent from the control side to Isolation Driver)
D1
X
Not Used
D2
X
0 = Command On (Signal being sent from the control side to Isolation Driver)
D3
X
Not Used
D4
X
0 = Command On (Signal being sent from the control side to Isolation Driver)
D5
X
Not Used
D6
X
0 = Command On (Signal being sent from the control side to Isolation Driver)
D7
X
Not Used
\1 X = Don’t care. During a write cycle (Address 2) it shall be considered as if the INIT is enabled.
Table 6 —Built-in Test Status (BIT)
Switch Control
(Closed/OPEN)
TRIP Status
ON/OFF Status
Conclusion
1
0
1
Normal (OFF)
0
0
0
Normal (ON)
0
1
1
Switch Tripped off due to excessive load current
Note: All other TRIP and ON/OFF status combinations are indicative of switch, BIT or load failures
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SCDCT2100 REV B 10/1/98 Plainview NY (516) 694-6700
Table 7A – Pin Numbers & Functions
CT2100-400
Pin #
Function
Pin #
Function
1
VEE
21
S4-
2
CS
22
S4+
3
INIT
23
NC
4
DB0
24
NC
5
DB1
25
NC
6
PRESET/CLEAR 1
26
A1
7
PRESET/CLEAR 2
27
A0
8
DB2
28
NC
9
DB3
29
S3-
10
VEE RETURN
30
S3+
11
VCCRETURN
31
S2-
12
DB4
32
S2+
13
DB5
33
NC
14
PRESET/CLEAR 3
34
NC
15
PRESET/CLEAR 4
35
NC
16
DB6
36
NC
17
DB7
37
NC
18
WRITE
38
NC
19
READ
39
S1-
20
VCC
40
S1+
Table 7B — Model CT2100-400 Dual In Line Package
TOP VIEW
.120
±.010
.120
±.010
40
21
1.140
±.010
Pin numbers are
for reference only
.900
±.010
20
1
2.140
±.010
.300
MAX
.180
±.010
.100
TYP
.016
.020
1.900
±.005
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CIRCUIT TECHNOLOGY
Figure 3 — Nominal Time to Trip Curve
3400
3200
3000
2800
Trip Region
Trip Envelope Range
2600
2400
2200
2000
1800
No Trip Region
1600
1400
1200
1.1 Amps
1000
800
600
1
10
100
1000
Time (ms)
Ordering Information
Model No.
CT2100-400
Specifications subject to change without notice.
Aeroflex Circuit Technology
35 South Service Road
Plainview New York 11830
Aeroflex Circuit Technology
Telephone: (516) 694-6700
FAX:
(516) 694-6715
Toll Free Inquiries: 1-(800) 843-1553
6
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