SCD8500 Rev K
FEATURES
64 Channels provided by six 16-channel multiplexers
Radiation performance
- Total dose:
300 krads(Si), Dose rate = 50 - 300 rads(Si)/s
- SEU:
Immune up to 120 MeV-cm2/mg
- SEL:
Immune by process design
Full military temperature range
Low power consumption < 90mW
Two address busses (A0-3 & B0-3), and four enable lines afford flexible organization
All channel inputs are protected by ±20V nominal Transorbs
Fast access time 1500ns typical
Break-Before-Make switching
High analog input impedance (with power on or off)
Designed for aerospace and high reliability space applications
Packaging – Hermetic ceramic
- 96 Leads, 1.32"Sq x .20"Ht quad flat pack
- Typical Weight 15 grams
Available on DSCC SMD 5962-00502
NOTE: Aeroflex Plainview does not currently have a DSCC certified Radiation Hardened Assurance Program
ACT8500 64-Channel Analog Multiplexer Module
Radiation Tolerant & ESD Protected
November 13, 2008
www.aeroflex.com/mux
Standard Products
GENERAL DESCRIPTION
Aeroflex’s ACT8500 is a radiation tolerant, 64 channel multiplexer MCM (multi-chip module) with
electrostatic discharge (ESD) protection on all channel inputs.
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 (CQFP). It is guaranteed operational
from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534, 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. The
ACT8500 design is inherently radiation tolerant.
A SECTION
Thirty-two (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
Thirty-two (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.