HCTS646MS
Radiation Hardened
Octal Bus Transceiver/Register, Three-State
August 1995
Features
Pinouts
24 LEAD CERAMIC DUAL-IN-LINE
METAL SEAL PACKAGE (SBDIP)
MIL-STD-1835 CDIP2-T24
TOP VIEW
• 3 Micron Radiation Hardened CMOS SOS
• Total Dose 200K RAD (Si)
• SEP Effective LET No Upsets: >100 MEV-cm2/mg
• Single Event Upset (SEU) Immunity < 2 x 10-9 Errors/
Bit-Day (Typ)
CAB
SAB
DIR
A0
1
2
3
4
5
6
7
8
9
24
VCC
• Dose Rate Survivability: >1 x 1012 RAD (Si)/s
• Dose Rate Upset >1010 RAD (Si)/s 20ns Pulse
• Cosmic Ray Upset Rate 2 x 10-9 Errors/Bit Day
• Latch-Up Free Under Any Conditions
• Fanout (Over Temperature Range)
- Bus Driver Outputs - 15 LSTTL Loads
• Military Temperature Range: -55oC to +125oC
• Significant Power Reduction Compared to LSTTL ICs
• DC Operating Voltage Range: 4.5V to 5.5V
• LSTTL Input Compatibility
23 CBA
22 SBA
21 OE
20 B0
19 B1
18 B2
17 B3
16 B4
15 B5
14 B6
13 B7
A1
A2
A3
A4
A5
A6 10
A7 11
- VIL = 0.8V Max
- VIH = VCC/2
GND 12
• Input Current Levels Ii ≤ 5µA at VOL, VOH
Description
24 LEAD CERAMIC METAL SEAL
FLATPACK PACKAGE (FLATPACK)
MIL-STD-1835 CDFP4-F24
TOP VIEW
The Intersil HCTS646MS is a Radiation Hardened Three-
State Octal Bus Tranceiver/Register with Non-Inverting
outputs. This device is a bus transceiver with D-type flip-flops
which act as internal storage registers. Data on the A bus or
the B bus can be clocked into the registers on a High-to-Low
transition of either CAB ro CBA clock inputs. Output enable
(OE) and Direction (DIR) inputs control the transceiver func-
tions. Data present at the high impedance output can be
stored in either register or both but only one of the two buses
can be enabled as outputs at any one time. The select con-
trols (SAB and SBA) can multiplex stored and transparent
(real time) data. The direction control determines which data
bus will receive data when the OE pin is LOW. In the high
impedance mode (OE high), A data can be stored in one reg-
ister and B data in the other register. Data at the A or B termi-
nals can be clocked into the storage flip-flops at any time.
CAB
SAB
DIR
A0
24
23
22
21
20
19
18
17
16
15
14
13
1
VCC
CBA
SBA
OE
B0
2
3
4
5
A1
6
A2
B1
7
A3
B2
8
A4
B3
9
A5
B4
10
11
12
A6
B5
A7
B6
GND
B7
The HCTS646MS utilizes advanced CMOS/SOS technology
to achieve high-speed operation. This device is a member of
radiation hardened, high-speed, CMOS/SOS Logic Family.
The HCTS646MS is supplied in a 24 lead Ceramic flatpack
(K suffix) or a SBDIP Package (D suffix).
Ordering Information
PART NUMBER
HCTS646DMSR
TEMPERATURE RANGE
SCREENING LEVEL
Intersil Class S Equivalent
Intersil Class S Equivalent
Sample
PACKAGE
o
o
-55 C to +125 C
24 Lead SBDIP
o
o
HCTS646KMSR
-55 C to +125 C
24 Lead Ceramic Flatpack
24 Lead SBDIP
o
HCTS646D/Sample
HCTS646K/Sample
HCTS646HMSR
+25 C
o
+25 C
Sample
24 Lead Ceramic Flatpack
Die
o
+25 C
Die
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Spec Number 518628
File Number 3074.1
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999706