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Integrated Circuit Systems, Inc. ICS9S857 Preliminary Product Preview Low-Voltage 10-Bit FET BUS Switch With Internal Pulldown Resistors Product Features: Full DDR solution provided when used with ICSSSTV16857 and ICS93857 Enable signal is SSTL_2 compatible Flow-through architecture optimizes PCB layout Designed for use with 200 Mbit/s Double Data-Rate (DDR) SDRAM applications Switch On-state restance is designed to eliminate series resistor to DDR SDRAM Internal 10W pulldown resistors to ground on B port Internal 50W pullup resistor on Output-Enable (OE#) input Latch-up perfromance exceeds 100 mA per JESD 78, Class II Available in 24 pin TSSOP package Pin Configuration VREF A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VDD OE# B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 24-Pin TSSOP Logic Diagram (Positive Logic) 2 22 RINT Simplified Shcematic, Each FET Switch A1 SW B1 A10 11 VDD 23 1 SW 13 RINT B10 A B OE# VREF Function Table INPUT OE# L H FUNCTION A port = B port Disconnect 9S857 Rev A 7/31/00 PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice. ICS9S857 (OE#) ICS9S857 Preliminary Product Preview Pin Descriptions PIN NUMBER 1 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 12 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 23 24 P I N NA M E VREF A1-A10 GND B1-B10 OE# VDD TYPE OUT IN PWR OUT IN PWR DESCRIPTION Reference output voltage Inputs Ground Outputs Output Enable Power supply (3.6V) Absolute Maximum Ratings SYMBOL VDD IIK VI Tstg VI PA R A M E T E R DC supply Voltage DC input clamp current DC input voltage range (OE# only)2 Storage temperature range DC input voltage (except OE#) 2 CONDITIONS R AT I N G -0.5 to +4.6 UNIT V mA V C V V I/O < 0 -50 VDD + 0.5 -65 to 150 -0.5 to 4.6 Notes: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under " recommended operating conditions' is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. The package thermal impedance is calculated in accordance with JESD 51. 2. 3. Recommended Operating Condidions SYMBOL VDD VREF VIH VIL VIH VIL Tamb PA R A M E T E R DC supply Voltage Reference voltage (0.38 x VDD) AC high-level input AC low-level input voltage DC high-level input voltage DC low-level input voltage Operating free-air temperature range 0 VREF+ 180 mV VREF -180mV +85 LIMITS MIN 3 1.15 VREF+ 350 mV VREF -350mV TYP 3.3 1.25 MAX 3.6 1.35 UNIT V V V V V V C 2 ICS9S857 Preliminary Product Preview SYMBOL In Millimeters In Inches COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX 0.05 0.80 0.17 1.20 0.15 1.05 0.27 .002 .032 .007 0.047 .006 .041 .011 A A1 A2 b c D E E1 e L N aaa VARIATIONS N 20 24 0.09 0.20 SEE VARIATIONS 6.40 BASIC 4.30 4.50 0.50 BASIC 0.45 0.75 SEE VARIATIONS 0 8 0.10 .0035 .008 SEE VARIATIONS 0.252 BASIC .169 .177 0.020 BASIC .018 .030 SEE VARIATIONS 0 8 .004 D mm. MIN 4.90 6.40 7.70 7.70 9.60 9.60 10.90 12.40 MAX 5.10 6.60 7.90 7.90 9.80 9.80 11.10 12.60 MIN .193 .252 .303 .303 .378 .378 .429 .488 D (inch) MAX .201 .260 .311 .311 .386 .386 .437 .496 7/6/00 Rev B 4.40 mm. Body, 0.50 mm. pitch TSSOP (0.020 mil) (173 mil) 28 30 36 38 44 50 MO-153 JEDEC Doc.# 10-0036 Ordering Information ICS9S857yGT ICS XXXX y G - PPP - T Designation for tape and reel packaging Pattern Number (2 or 3 digit number for parts with ROM code patterns) Package Type G=TSSOP Example: Revision Designator (will not correlate with datasheet revision) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV = Standard Device PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice. 3 |
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