Document
HS-245RH, HS-246RH, HS-248RH
Data Sheet August 1999 File Number 3034.2
HS-245RH HS-246RH HS-248RH
Radiation Hardened Triple Line Transmitter Radiation Hardened Triple Line Receiver Radiation Hardened Triple Party-Line Receiver
Features
• Electrically Screened to SMD # 5962-96722 and 596296723 • QML Qualified per MIL-PRF-38535 Requirements • Radiation Hardened DI Processing - Total Dose (γ) . . . . . . . . . . . . . . . . . . . 2 x 105 RADs(Si) - Latchup Free - Neutron Fluence . . . . . . . . . . . . . . . . . 5 x 1012 N/cm2 • Replaces HD-245/246/248 • Current Mode Operation • High Speed with 50 Foot Cable . . . . . . . . . . . . . . . 15MHz High Speed with 1000 Foot Cable . . . . . . . . . . . . . . 2MHz • High Noise Immunity • Low EMI Generation • Low Power Dissipation • High Common Mode Rejection • Transmitter and Receiver Party Line Capability • Tolerates -2.0V to +20.0V Ground Differential (Transmitter with Respect to Receiver) • Transmitter Input/Receiver Output TTL/DTL Compatible
The HS-245RH/246RH/248RH radiation hardened triple line transmitter and triple line receivers are fabricated using the Intersil dielectric isolation process. These parts are identical in pinout and function to the original HD-245/246/248. They are also die size and bond pad placement compatible with the original parts for those customers who buy dice for hybrid assembly. Each transmitter-receiver combination provides a digital interface between systems linked by 100Ω twisted pair, shielded cable. Each device contains three circuits fabricated within a single monolithic chip. Data rates greater than 15MHz are possible depending on transmission line loss characteristics and length. The transmitter employs constant current switching which provides high noise immunity along with high speeds, low power dissipation, low EMI generation and the ability to drive high capacitance loads. In addition, the transmitters can be turned “off” allowing several transmitters to timeshare a single line. Receiver input/output differences are shown in the table:
PART NO. HS-246RH HS-248RH INPUT 100Ω Hi-Z OUTPUT Open Collector 6K Pull-Up Resistors
Ordering Information
ORDERING NUMBER 5962R9672201QCC 5962R9672201QXC 5962R9672201VCC 5962R9672201VXC HS9-245RH/PROTO 5962R9672301QCC 5962R9672301QXC 5962R9672301VCC 5962R9672301VXC 5962R9672302QCC 5962R9672302QXC 5962R9672302VCC 5962R9672302VXC INTERNAL MKT. NUMBER HS1-245RH-8 HS9-245RH-8 HS1-245RH-Q HS9-245RH-Q HS9-245RH/PROTO HS1-246RH-8 HS9-246RH-8 HS1-246RH-Q HS9-246RH-Q HS1-248RH-8 HS9-248RH-8 HS1-248RH-Q HS9-248RH-Q TEMP. RANGE (oC) -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125
The internal 100Ω cable termination consists of 50Ω from each input to ground. HS-248RH ‘‘party line’’ receivers have a Hi-Z input such that as many as ten of these receivers can be used on a single transmission line. Each transmitter input and receiver output can be connected to TTL and DTL systems. When used with shielded transmission line, the transmitter-receiver system has very high immunity to capacitance and magnetic noise coupling from adjacent conductors. The system can tolerate ground differentials of -2.0V to +20.0V (transmitter with respect to receiver). Specifications for Rad Hard QML devices are controlled by the Defense Supply Center in Columbus (DSCC). The SMD numbers listed here must be used when ordering. Detailed Electrical Specifications for these devices are contained in SMD 5962-96722 and 5962-96723. A “hotlink” is provided on our homepage for downloading. http://www.intersil.com/spacedefense/space.htm 1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. www.intersil.com or 321-724-7143 | Copyright © Intersil Corporation 1999
HS-245RH, HS-246RH, HS-248RH Pinouts
HS9-245RH 14 PIN FLATPACK HS1-245RH 14 CERAMIC DIP MIL-STD-1835 CDIP2-T14 TOP VIEW HS9-246RH/248RH 14 PIN FLATPACK HS1-246RH/248RH 14 PIN CERAMIC DIP MIL-STD-1835 CDFP3-F14 TOP VIEW
(-) INPUT 1 (+) INPUT 2 (R1) OUTPUT 3 (-) INPUT 4 (+) INPUT 5 (R2) OUTPUT 6 GND 7 R3 R2 R1 14 VCC (R1 AND R2) 13 VCC (R3) 12 VEE (R1 AND R2) 11 VEE (R3) 10 OUTPUT (R3) 9 INPUT (+) 8 INPUT (-)
φ1 INPUT φ1 OUTPUT φ2 OUTPUT φ2 INPUT φ1 INPUT φ1 OUTPUT
1 2 3 4 5 6 T2 T1 T3
14 VCC 13 INPUT φ2 12 OUTPUT φ2 11 OUTPUT φ1 10 INPUT φ1 9 8 INPUT φ2 OUTPUT φ2
SUBSTRATE 7 GND
Test Circuits and Applications
NOTES: Input: TTLH ≤ 10ns TTHL ≤ 10ns pw = 500ns f = 1MHz VOUT IOUT = 50Ω
OPEN (≈3.2V)
φ1 IN φ2 IN
0V OPEN (≈3.2V) 0V
VCC = +5V
φ1
D.U.T.
TPHL
φ1 OUT
TPLH
≈0.15V (≈3mA)
0V
VOUT φ1 50Ω 1% TRANSMITTER OUT VOUT φ2
φ2
50Ω 1%
≈0.15V (≈3mA)
φ2 OUT
0V
All timing measurements referenced to 50% V points FIGURE 1. CIRCUIT #1 TRANSMITTER PROPAGATION DELAY
150mV VCC = +5V (+) (+)IN (-) IN 0V 150mV (-) 50Ω 50 Ω D.U.T. 800Ω 30pF 520Ω RECEIVER OUTPUT
NOTES: Input: TTLH ≤ 10ns TTHL ≤ 10ns pw = 500ns f = 1MHz
RECEIVER OUT TP.