1
November 1997
ACS257MS
Radiation Har dened
Quad 2-Input Multiplex er with Three-State Outputs
Features
• QML Qualified Per MIL-PRF-38535 Requirements
• 1.25Micron Radiation Hardened SOS CMOS
• Radiation Environment
- Latch-up Free Under any Conditions
- Total Dose . . . . . . . . . . . . . . . . . . . . . .3 x 10
5
RAD(Si)
- SEU Immunity. . . . . . . . . . . <1 x 10
-10
Errors/Bit/Day
- SEU LET Threshold . . . . . . . . . . .>100MeV/(mg/cm
2
)
• Input Logic Levels . . .V
IL
= (0.3)(V
CC
), V
IH
= (0.7)(V
CC
)
• Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8mA
• Quiescent Supply Current. . . . . . . . . . . . . . . . . . .400µA
• Propagation Delay
- Enable to Output . . . . . . . . . . . . . . . . . . . . . . . . . 13ns
- Input or Address to Output . . . . . . . . . . . . . . . . . 14ns
Applications
• 4-Bit Source Selection
• Data Routing
• High Frequency Switching
Description
The Radiation Hardened ACS257MS is a Quad 2-Channel
multiplexer which selects four bits of data from one of two
sources under the control of a single select pin. The Output
Enable input is active LOW and controls all outputs. When
OE
is set HIGH, all outputs are configured into a high impedance
state, regardless of all other input conditions. All inputs are b uff-
ered and the outputs are designed for balanced propagation
dela y and transition times .
The ACS257MS is fabricated on a CMOS Silicon on Sapphire
(SOS) process, which provides an immunity to Single Event
Latch-up and the capability of highly reliable performance in
any radiation environment. These devices offer significant
power reduction and faster performance when compared to
ALSTTL types.
Specifications for Rad Hard QML devices are controlled
by the Defense Supply Center in Columbus (DSCC). The
SMD numbers listed belo w m ust be used when or dering.
Detailed Electrical Specifications for the ACS257 are
contained in SMD 5962-98008. A “hot-link” is provided
on our homepage with instructions for downloading.
http://www.intersil.com/data/sm/index.htm
Ordering Information
SMD PART NUMBER INTERSIL PART NUMBER TEMP. RANGE (
o
C) PACKAGE CASE OUTLINE
5962F9800801VEC ACS257DMSR-02 -55 to 125 16 Ld SBDIP CDIP2-T16
N/A ACS257D/Sample-02 25 16 Ld SBDIP CDIP2-T16
5962F9800801VXC ACS257KMSR-02 -55 to 125 16 Ld Flatpack CDFP4-F16
N/A ACS257K/Sample-02 25 16 Ld Flatpack CDFP4-F16
N/A ACS257HMSR-02 25 Die N/A
Pinouts
ACS257 (SBDIP)
TOP VIEW
ACS257 (FLATPACK)
TOP VIEW
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
S
1I
0
1I
1
1Y
2I
0
2I
1
GND
2Y
V
CC
4I
0
4I
1
4Y
3I
0
3I
1
3Y
OE
S
1I
0
1I
1
1Y
2I
0
2I
1
2Y
GND
2
3
4
5
6
7
8
116
15
14
13
12
11
10
9
V
CC
OE
4I
0
4I
1
4Y
3I
0
3I
1
3Y
File Number 4429
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
