SCD8500 Rev G
FEATURES
Radiation Performance
- Radiation 300K(Si) Total Dose
- No Latch-Up or SEE to 120MeV/cm2/mg
Full Military Temperature Range
Low Power Consumption < 90mW
64 Channels Provided by Six (6) HS-1840RH Multiplexers
Two Address Busses (A0-3 & B0-3), and Four Enable lines afford flexible organization
All Channel Inputs are Over Voltage protected by ±20V Transorbs (Power On or Off)
Fast Access Time 1500ns
Break-Before-Make Switching
High Analog Input Impedance (with Power On or Off)
No Latch-Up
Packaging – Hermetic Ceramic Quad Flat Pack
- 96 Leads, 1.32"Sq x .20"Ht Quad Flat Pack
- Typical Weight 15 grams
DSCC SMD 5962-0050201KXC
*
NOTE: Aeroflex Plainview does not currently have a DSCC certified Radiation Hardened Assurance Program
GENERAL DESCRIPTION
Aeroflex’s ACT8500 is a radiation hardened, 64 channel multiplexer MCM (multi-chip module) with ESD protection for use in
space applications. It is designed to provide a high input impedance with power on or off. All channel inputs have electrostatic
discharge protection.
The ACT8500 has been specifically designed to meet exposure to radiation environments. It is available in a 96 lead High
Temperature Co-Fired Ceramic (HTCC) Quad Flatpack (QFP). It is guaranteed operational from -55°C to +125°C. The ACT8500 is
ideal for demanding military and space applications.
ORGANIZATION AND APPLICATION
The ACT8500 consists of six 16 channel multiplexers arranged as shown in the Block Diagram.
A SECTION
32 channels addressable by Bus A0~A3, in two 16 channel blocks, each block enabled separately. Each block connects the
addressed channel to two outputs, "Output" and "Current". This technique enables selecting and reading a remote resistive sensor
without the multiplexer resistance being part of the measurement. For grounded sensors, this is done by passing current to the
sensor by means of the "Current" pin and reading the resultant voltage (proportional to the sensor resistance) at the "Output" pin.
B SECTION
32 channels addressable by Bus B0~B3, in two 16 channel blocks, each block enabled separately. Each block connects the
addressed channel to one output. By paralleling the channel inputs and enables, this section can be converted to act like one of the
16 channel blocks of the A section.
ACT8500 64-Channel Analog Multiplexer Module
Radiation Hardened & ESD Protected
* Not approved for RAD Hard Version of SMD at this time
Radiation information available upon request
February 17, 2005
www.aeroflex.com/RADHARD
Standard Products