AAHS298B
Radiation Tolerant 8-channel Source Driver
Features
Description
. 700mA Output Source Current
. Zero Quiescent Off Current
The AAHS298B is part of Microsemi’s new family of
Radiation Tolerant products aimed at the aerospace
and defense markets. The AAHS298B is a Radiation-
Tolerant source driver with eight non-inverting
channels, with internal thermal shutdown.
. Full Channel Isolation to Prevent Fault
Propagation
. Internal Ground Clamp Diodes
. 75V Output Breakdown Voltage
. TTL, 5V and 12V Logic Compatible
. Internal Thermal Shutdown
Capable of providing an interface from TTL, 5V or 12V
logic systems to relays, motors, solenoids, and other
loads, this device adds the additional benefit of an
internal thermal shutdown and output transient
protection/clamp diodes with sustaining voltages to
75V.
. Radiation tolerant to 100kRad(Si) Total Dose,
50kRad (Si) ELDRS
. -55°C to +125°C Temperature Range
Each output is capable of sourcing 700mA with a
withstand voltage of 75V over the full military
temperature range. The thermal shutdown is intended
to protect against over-current and soft-start
occurrences.
. Available in 20-pin Ceramic SOIC with formed
and flat Leads
. QML-V and QML-Q Qualified
Applications
The AAHS298B is offered in 20-pin ceramic SOIC
package with formed and flat leads. The AAHS298B
has demonstrated tolerance to 100kRad (Si) total dose
(min), 50kRad (Si) ELDRS (min), as well as immunity
to latch-up and SEE tolerance. Available standard
screening includes Level “S” or Level “B,” Other
screening or processing in line with our capabilities can
be supported to meet customers’ requirements.
. Relay/Solenoid Drivers
. Lamp/LED Drivers
. Stepper and/or Servo Motor Drivers
. Redundant Power Distribution
Product Highlight
VS1
VS2
AAHS298B
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
12
11
1
2
20
19
18
17
16
15
14
13
12
11
11
12
13
14
15
16
17
18
19
20
10
9
11
12
13
14
15
16
17
18
19
20
10
9
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
IN8
IN7
IN6
IN5
IN4
IN3
IN2
IN1
3
8
8
4
7
7
5
6
6
6
5
5
7
4
4
8
3
3
9
1
0
9
2
2
10
1
1
AAHS298B
LX7710
LX7710
VS2
VS1
CH1 Power Bus
CH2 Power Bus
CH3 Power Bus
CH4 Power Bus
CH5 Power Bus
CH6 Power Bus
CH7 Power Bus
CH8 Power Bus
Figure 1 · Redundant Switchable Power Bus
March 2016 Rev. 1.4
www.microsemi.com
1
© 2015 Microsemi Corporation- Analog Mixed Signal