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HS-3374RH
August 2000 File Number 3038.2
Radiation Hardened 8-Bit Bidirectional CMOS/TTL Level Converter
The Intersil HS-3374RH is a radiation hardened 8-bit bidirectional level converter designed to interface CMOS logic levels with TTL logic levels in radiation hardened bus oriented systems. The HS-3374RH is fabricated using a radiation hardened EPI-CMOS process and features eight parallel bidirectional buffer/level converters. Two control inputs, ENABLE and DISABLE, are used to determine the direction of data flow, and to set both the in puts and outputs in the high impedance state. The control inputs may be driven by either TTL or CMOS logic drivers capable of sinking one standard TTL load. The HS-3374RH is a non-inverting version of the industry standard CD40116. The non-inverting outputs of the HS-3374RH reduce PC board chip count by eliminating the need to restore data back to a non-inverted format. 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 5962-96786. A "hot-link" is provided on our homepage for downloading. www.intersil.com/spacedefense/space.asp
Features
* Electrically Screened to SMD # 5962-96786 * QML Qualified per MIL-PRF-38535 Requirements * Radiation Hardened EPI-CMOS - Total Dose . . . . . . . . . . . . . . . . . . . . . . 1 x 105RAD(Si) - Latch-Up Immune . . . . . . . >1 x 1012RAD(Si)/s (Note 1) * Low Propagation Delay Time - Typical CMOS to TTL Pre-RAD . . . . . . . . . . . . . . . 40ns - Typical CMOS to TTL Post 100KRAD . . . . . . . . . . 40ns - Typical TTL to CMOS Pre-RAD . . . . . . . . . . . . . . . 50ns - Typical TTL to CMOS Post 100KRAD . . . . . . . . . . 50ns * Low Standby Power * +10V CMOS and +5V TTL Power Supply Inputs * Eight Non-Inverting Three-State Input/Output Channels * No External TTL Input Pull-Up Resistors Required * High TTL Sink Current * Equivalent to Sandia SA2996 * Military Temperature Range . . . . . . . . . . . . -55oC to 125oC
NOTE: 1. For operation at 10V and transient levels above 1 x 1010RAD(Si)/s, please refer to Application Note 401.
Ordering Information
ORDERING NUMBER 5962R9678601QWC 5962R9678601VWC INTERNAL MKT. NUMBER HS1-3374RH-8 HS1-3374RH-Q TEMP. RANGE (oC) -55 to 125 -55 to 125
Pinout
HS-3374RH MIL-STD-1835, CDIP2-T22 (SBDIP) TOP VIEW
VDD A0 A1 VDD = 1 VCC = 22 GND = 11 A2 CMOS INPUT/OUTPUT A3 A4 A5 1 2 3 4 5 6 7 8 9 22 VCC 21 B0 20 B1 19 B2 18 B3 17 B4 16 B5 15 B6 14 B7 13 DISABLE 12 NC TTL INPUT/OUTPUT
Functional Diagram
DISABLE 13
CMOS IN/OUT
8 2-9 LEVEL SHIFTER
8
TTL OUT (IN) 14-21
A6 A7
ENABLE 10 GND 11
ENABLE 10
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2002. All Rights Reserved
HS-3374RH Functional Block Diagram
1 OF 8 IDENTICAL CIRCUITS
VDD VDD VCC 2 (3, 4, 5, 6, 7, 8, 9) A1 CMOS INPUT (OUTPUT) D LEVEL SHIFTER E GND GND GND B1 TTL OUTPUT (INPUT) 21 (20, 19, 18, 17, 16, 15, 14) VCC DISABLE 13 VDD LEVEL SHIFTER
D
VDD
GND ENABLE 10
LEVEL SHIFTER
E
NOTES: 2. Enable and disable are TTL type inputs 3. D and E outputs are common to all 8 channels
INPUT (OUTPUT) DATA A0 A1 A2 A3 A4 A5 A6 A7 TERMINAL NUMBER 2 3 4 5 6 7 8 9
OUTPUT (INPUT) DATA B0 B1 B2 B3 B4 B5 B6 B7 TERMINAL NUMBER 21 20 19 18 17 16 15 14 ENABLE X 1 0 DISABLE 0 1 1
TRUTH TABLE FUNCTION Convert CMOS Level to TTL Level Convert TTL Level to CMOS Level High Impedance (Z)
0 = Low Level 1 = High Level X = Don't Care Z = High Impedance on Both CMOS and TTL sides. NOTE: An important caveat that is applicable to CMOS devices in general is that unused inputs should never be left floating. This rule applies to inputs connected to a three-state bus. The need for external pull-up resistors during three-state bus conditions is eliminated by the presence of regenerative latches on the following HS-3374RH pins: A0 - 7. The functional block diagram depicts one of these pins with the regenerative latch. When the CMOS driver assumes the high impedance state, the latch holds the bus in whatever logic state (high or low) it was before the three-state condition. A transient drive current of 1.5mA at VDD/2 0.5V for 10ns is required to switch the latch. Thus, CMOS device inputs connected to the bus are not allowed to float during three-state conditions. WARNING: Do not activate the Disable input by hardwiring to any TTL input pins. This is an incorrect mode of operation.
2
HS-3374RH Die Characteristics
DIE DIMENSIONS: 89.4 mils x 76.0 mils x 14 mils 1 mil INTERFACE MATERIALS: Glassivation: Type: SiO2 Thickness: 11kA 2kA Top Metallization: Type: AlSi Thickness: 8kA 1kA Substrate: Radiation Hardened Silicon Gate, Dielectric Isolation Backside Finish: Silicon ASSEMBLY RELATED INFORMATION: Substrate Potential: Unbiased (DI)
Metallization Mask Layout
HS-3374RH
(22) VCC (1) VDD (21) B0
(3) A1
(2) A0
(20) B1 A2 (4) (19) B2
A3 (5) (18) B3
A4 (6)
(17) B4
A5 (7)
(16) B5
A6 (8)
(15) B6
A7 (9)
(14) B7
ENABLE (10)
GND (11)
3
DISABLE (13)

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