1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

www.intersil.com or 407-727-9207

Satellite Applications Flow™ (SAF) is a trademark of Intersil Corporation.

HCS138T

Radiation Hardened Inverting 3-to-8 Line

Decoder/Demultiplexer

fully tested and guaranteed to 100kRAD total dose. These

QML Class T devices are processed to a standard flow

intended to meet the cost and shorter lead-time needs of

large volume satellite manufacturers, while maintaining a

high level of reliability.

The Intersil HCS138T is a Radiation Hardened 3-to-8 Line

Decoder/Demultiplexer. The outputs are active in the low

state. Two active low and one active high enables (E1, E2,

E3) are provided. If the device is enabled, the binary inputs

(A0, A1, A2) determine which one of the eight normally high

outputs will go to a low logic level.

Specifications

Specifications for Rad Hard QML devices are controlled by

the Defense Supply Center in Columbus (DSCC). The SMD

numbers listed below must be used when ordering.

Detailed Electrical Specifications for the HCS138T are

contained in SMD 5962-95727. A “hot-link” is provided from

our website for downloading.

www.intersil.com/spacedefense/newsafclasst.asp

Intersil‘s Quality Management Plan (QM Plan), listing all

Class T screening operations, is also available on our

website.

www.intersil.com/spacedefense/newsafclasst.asp

Features

• QML Class T, Per MIL-PRF-38535

• Radiation Performance

- Gamma Dose (

- Latch-Up Free Under Any Conditions

Errors/Bit-Day (Typ)

• 3 Micron Radiation Hardened SOS CMOS

• Fanout (Over Temperature Range)

- Standard Outputs - 10 LSTTL Loads

• Significant Power Reduction Compared to LSTTL ICs

• DC Operating Voltage Range: 4.5V to 5.5V

• Input Logic Levels

• Input Current Levels Ii

Pinouts

HCS138DTR (SBDIP), CDIP2-T16

TOP VIEW

HCS138KTR (FLATPACK), CDFP4-F16

TOP VIEW

Ordering Information

ORDERING

NUMBER

PART

NUMBER

TEMP.

RANGE

5962R9572701TEC

HCS138DTR

-55 to 125

5962R9572701TXC

HCS138KTR

-55 to 125

NOTE:

Minimum order quantity for -T is 150 units through

distribution, or 450 units direct.

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

A0

A1

A2

E1

E2

E3

GND

Y7

Y1

Y2

Y3

Y4

Y5

Y6

Y0

A0

A1

A2

E1

E2

E3

Y7

GND

Y0

Y1

Y2

Y3

Y4

Y5

Y6

2

3

4

5

6

7

8

116

15

14

13

12

11

10

9

Data Sheet

July 1999

File Number

4614.1