High Performance 128Kx8 CMOS SRAM AS7C1024 AS7C1024L (R) 128Kx8 CMOS SRAM Features * Organization: 131,072 words x 8 bits * High speed - 10/12/15/20/25/35 ns address access time - 3/3/4/5/6/8 ns output enable access time * Low power consumption - Active: 770 mW max (10 ns cycle) - Standby: 55 mW max, CMOS I/O 11 mW max, CMOS I/O, L version - Very low DC component in active power * 2.0V data retention (L version) * Equal access and cycle times * Easy memory expansion with CE1, CE2, OE inputs * TTL-compatible, three-state I/O * 32-pin JEDEC standard packages - 300 mil PDIP and SOJ Socket compatible with 7C256 and 7C512 - 400 mil PDIP and SOJ - 8 x 20 TSOP * ESD protection >2000 volts * Latch-up current > 200 mA Logic block diagram Pin arrangement TSOP 8x20 DIP, SOJ OE A10 CE1 I/O7 I/O6 I/O4 I/O5 I/O3 GND I/O2 I/O1 I/O0 A0 A1 A2 A3 Vcc GND Sense amp AS7C1024 I/O7 512x256x8 Array (1,048,576) I/O0 Column decoder Control circuit WE OE CE1 CE2 A11 A9 A8 A13 WE CE2 A15 Vcc NC A16 A14 A12 A7 A6 A5 A4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Row decoder A0 A1 A2 A3 A4 A5 A6 A7 A8 NC A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 AS7C1024 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 Input buffer 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 A A A A A A A A 9 10 11 12 13 14 15 16 Selection guide Maximum address access time Maximum output enable access time Maximum operating current Maximum CMOS standby current L 7C1024-10 7C1024-12 7C1024-15 7C1024-20 7C1024-25 7C1024-35 10 12 15 20 25 35 3 3 4 5 6 8 140 130 120 110 100 90 10.0 10.0 10.0 10.0 10.0 10.0 2.0 2.0 2.0 2.0 2.0 2.0 Shaded areas contain advance information. ALLIANCE SEMICONDUCTOR Unit ns ns mA mA mA Vcc A15 CE2 WE A13 A8 A9 A11 OE A10 CE1 I/O7 I/O6 I/O5 I/O4 I/O3 AS7C1024 Functional description The AS7C1024 is a high performance CMOS 1,048,576-bit Static Random Access Memory (SRAM) organized as 131,072 words x 8 bits. It is designed for memory applications where fast data access, low power, and simple interfacing are desired. Equal address access and cycle times (tAA, tRC, tWC) of 10/12/15/20/25/35 ns with output enable access times (tOE) of 3/3/4/5/6/8 ns are ideal for high performance applications. Active high and low chip enables (CE1, CE2) permit easy memory expansion with multiplebank memory systems. When CE1 is HIGH or CE2 is LOW the device enters standby mode. The standard AS7C1024 is guaranteed not to exceed 55 mW power consumption in standby mode; the L version is guaranteed not to exceed 11 mW, and typically requires only 5 mW. The L version also offers 2.0V data retention. A write cycle is accomplished by asserting write enable (WE) and both chip enables (CE1, CE2). Data on the input pins I/O0-I/O7 is written on the rising edge of WE (write cycle 1) or the active-to-inactive edge of CE1 or CE2 (write cycle 2). To avoid bus contention, external devices should drive I/O pins only after outputs have been disabled with output enable (OE) or write enable (WE). A read cycle is accomplished by asserting output enable (OE) and both chip enables (CE1, CE2), with write enable (WE) HIGH. The chip drives I/O pins with the data word referenced by the input address. When either chip enable or output enable is inactive, or write enable is active, output drivers stay in high-impedance mode. All chip inputs and outputs are TTL-compatible, and operation is from a single 5V supply. The AS7C1024 is packaged in common industry standard packages. Absolute maximum ratings Parameter Voltage on any pin relative to GND Power dissipation Storage temperature (plastic) Temperature under bias DC output current Symbol Vt PD Tstg Tbias Iout Min -0.5 - -55 -10 - Max +7.0 1.0 +150 +85 20 Unit V W oC o C mA Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions outside those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Truth table CE1 H X L L L CE2 X L H H H WE X X H H L OE X X H L X Data High Z High Z High Z Dout Din Mode Standby (ISB, ISB1) Standby (ISB, ISB1) Output disable Read Write Key: X = Don't Care, L = LOW, H = HIGH Recommended operating conditions Parameter Supply voltage Input voltage VIL min = -3.0V for pulse width less than tRC/2. 2 (Ta = 0C to +70C) Symbol VCC GND VIH VIL Min 4.5 0.0 2.2 -0.5 Typ 5.0 0.0 - - Max 5.5 0.0 VCC+1 0.8 Unit V V V V AS7C1024 DC operating characteristics1 Parameter Input leakage current Symbol | ILI | Output leakage current | ILO | Operating power ICC supply current Standby power supply current Output voltage ISB (VCC = 5V10%, GND = 0V, Ta = 0C to +70C) -10 -12 -15 -20 -25 -35 Min Max Min Max Min Max Min Max Min Max Min Max Unit Test Conditions VCC = Max, Vin = GND to VCC CE1 = VIH or CE2 = VIL, VCC = Max, Vout = GND to VCC CE1 = VIL, CE2 = VIH, f = fmax, Iout = 0 mA L CE1 = VIH or CE2 = VIL, f = fmax L CE1 VCC-0.2V or CE2 0.2V, ISB1 Vin 0.2V or Vin VCC-0.2V, VOL VOH f=0 IOL = 8 mA, VCC = Min IOH = -4 mA, VCC = Min L - 1 - 1 - 1 - 1 - 1 - 1 A - 1 - 1 - 1 - 1 - 1 - 1 A - 140 - 130 - 120 - 110 - 100 - - 135 - 125 - 115 - 105 - 95 - - 55 - 50 - 40 - 40 - 35 - - 50 - 45 - 35 - 35 - 30 - - 10 - 10 - 10 - 10 - 10 - 90 75 35 30 10 mA mA mA mA mA - 2.0 mA 2.0 - 2.0 - 2.0 - 2.0 - 2.0 - - 0.4 - 0.4 - 0.4 - 0.4 - 0.4 - 0.4 2.4 - 2.4 - 2.4 - 2.4 - 2.4 - 2.4 - V V Shaded areas contain advance information. Capacitance2 (f = 1 MHz, Ta = Room Temperature, VCC = 5V) Parameter Input capacitance I/O capacitance Symbol CIN CI/O Signals Test Conditions A, CE1, CE2, WE, OE Vin = 0V I/O Vin = Vout = 0V Read cycle3,9,12 Parameter Read cycle time Address access time OE LOW to output in Low Z OE HIGH to output in High Z Power up time Power down time tOHZ tPU tPD Output enable (OE) access time Output hold from address change CE1 LOW to output in Low Z CE2 HIGH to output in Low Z CE1 HIGH to output in High Z CE2 LOW to output in High Z Unit pF pF (VCC = 5V10%, GND = 0V, Ta = 0C to +70C) Symbol tRC tAA tACE1 tACE2 tOE tOH tCLZ1 tCLZ2 tCHZ1 tCHZ2 tOLZ Chip enable (CE1) access time Chip enable (CE2) access time Max 5 7 -10 -12 -15 -20 -25 -35 Min Max Min Max Min Max Min Max Min Max Min Max 10 - 12 - 15 - 20 - 25 - 35 - - 10 - 12 - 15 - 20 - 25 - 35 - 10 - 12 - 15 - 20 - 25 - 35 - 10 - 12 - 15 - 20 - 25 - 35 - 3 - 3 - 4 - 5 - 6 - 8 2 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - 3 - - 3 - 3 - 4 - 5 - 6 - 8 - 3 - 3 - 4 - 5 - 6 - 8 0 - 0 - 0 - 0 - 0 - 0 - - 0 - 3 - 10 - 0 - 3 - 12 - 0 - 4 - 15 - 0 - 5 - 20 - 0 - 6 - 25 - 0 - 8 - 35 Unit ns ns ns ns ns ns ns ns ns ns ns Notes 5 4, 5, 12 4, 5, 12 4, 5, 12 4, 5, 12 4, 5 ns ns ns 4, 5 4, 5, 12 4, 5, 12 3 3, 12 3, 12 3 AS7C1024 Key to switching waveforms AAA AAAA AAAA AAAAAAA AAA AAA AAAA AAAA AAAAAAA AAA Rising input AAA AAAA AAAA AAAAAAA AAA Falling input Undefined output/don't care Read waveform 13,6,7,9,12 Address controlled tRC Address tAA AAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAAAAAA Dout tOH Data Valid Read waveform 23,6,8,9,12 CE1 and CE2 controlled 1 tRC CE1 CE2 AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAA A OE AAAA AAAAAAAAAAAAAAAAAAAAAAAAA tOE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAA tOLZ tACE1, tACE2 Dout tCLZ1, tCLZ2 Current supply tPU tOHZ AAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAA tCHZ1, tCHZ2 Data Valid tPD 50% Chip enable (CE1) to write end Chip enable (CE2) to write end Address setup to write end Address setup time Write pulse width Address hold from end of write Data valid to write end Data hold time Write enable to output in High Z Output active from write end Shaded areas contain advance information. 4 ISB 50% Write cycle11, 12 Parameter Write cycle time ICC (VCC = 5V10%, GND = 0V, Ta = 0C to +70C) Symbol tWC tCW1 tCW2 tAW tAS tWP tAH tDW tDH tWZ tOW -10 Min Max 10 - 9 - 9 - 9 - 0 - 7 - 0 - 6 - 0 - - 5 3 - -12 Min Max 12 - 10 - 10 - 10 - 0 - 8 - 0 - 6 - 0 - - 5 3 - -15 Min Max 15 - 12 - 12 - 12 - 0 - 9 - 0 - 9 - 0 - - 5 3 - -20 Min Max 20 - 12 - 12 - 12 - 0 - 12 - 0 - 10 - 0 - - 5 3 - -25 Min Max 20 - 15 - 15 - 15 - 0 - 15 - 0 - 10 - 0 - - 5 3 - -35 Min Max 30 - 20 - 20 - 20 - 0 - 17 - 0 - 12 - 0 - - 5 3 - Unit ns ns ns ns ns ns ns ns ns ns ns Notes 12 12 12 4, 5 4, 5 4, 5 AS7C1024 Write waveform 110,11,12 WE controlled tWC tAW tAH Address tWP AAAAAAAAAA AAAA AAAAAAAA AAAAAA AA AAAAAAAAAA WE tAS tDW Din tDH Data Valid tWZ tOW D out Write waveform 210,11,12 CE1 and CE2 controlled tWC tAW tAH Address tAS tCW1, tCW2 CE1 CE2 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA tWP AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA WE AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA tWZ Din tDW tDH Data Valid AAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAA AAAAAAAA AAAAAAAA AAAAAAA AAA Dout Data retention characteristics L version only Parameter VCC for data retention Data retention current Chip deselect to data retention time Operation recovery time Symbol VDR ICCDR tCDR tR Input leakage current | ILI | Test Conditions VCC = 2.0V CE1 VCC-0.2V or CE2 0.2V Vin VCC-0.2V or Vin 0.2V Min 2.0 - 0 tRC Max - 500 - - Unit V A ns ns - 1 A Data retention waveform L version only Data retention mode VCC VDR 2.0V 4.5V tCDR AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA CE AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAA AAA VIH 4.5V tR VDR AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AA AAAA VIH AAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAAAA AAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 5 AS7C1024 AC test conditions - Output load: see Figure B, except for tCLZ and tCHZ see Figure C. - Input pulse level: GND to 3.0V. See Figure A. - Input rise and fall times: 5 ns. See Figure A. - Input and output timing reference levels: 1.5V. +3.0V GND Thevenin Equivalent: 168 Dout +1.728V +5V 480 Dout 90% 10% 90% 10% Figure A: Input waveform +5V 255 480 Dout 30 pF* GND Figure B: Output load 255 6 *including scope and jig capacitance GND Figure C: Output load for tCLZ, tCHZ Notes 1 2 3 4 5 6 7 8 9 10 11 12 5 pF* During VCC power-up, a pull-up resistor to VCC on CE1 is required to meet ISB specification. This parameter is sampled and not 100% tested. For test conditions, see AC Test Conditions, Figures A, B, C. tCLZ and tCHZ are specified with CL = 5pF as in Figure C. Transition is measured 500mV from steady-state voltage. This parameter is guaranteed but not tested. WE is HIGH for read cycle. CE1 and OE are LOW and CE2 is HIGH for read cycle. Address valid prior to or coincident with CE transition LOW. All read cycle timings are referenced from the last valid address to the first transitioning address. CE1 or WE must be HIGH or CE2 LOW during address transitions. All write cycle timings are referenced from the last valid address to the first transitioning address. CE1 and CE2 have identical timing. AS7C1024 Normalized supply current ICC, ISB vs. ambient temperature Ta 1.4 1.2 1.2 0.8 0.6 0.2 0.0 4.0 Normalized access time tAA vs. supply voltage VCC Normalized access time Ta = 25C 1.0 0.9 4.5 5.0 5.5 Supply voltage (V) Output source current IOH vs. output voltage VOH VCC = 5.0V Ta = 25C 60 40 20 1.25 2.5 3.75 Output voltage (V) 5.0 1 0.2 1.4 -10 35 80 125 Ambient temperature (C) Normalized supply current ICC vs. cycle frequency 1/tRC, 1/tWC 1.2 VCC = 5.0V 1.0 0.9 VCC = 5.0V Ta = 25C 1.0 0.8 0.6 0.4 0.2 0.0 -10 35 80 125 Ambient temperature (C) 0 Output sink current IOL vs. output voltage VOL Typical access time change tAA vs. output capacitive loading 25 50 75 Cycle frequency (MHz) 100 35 120 30 VCC = 5.0V Ta = 25C 80 60 40 20 0 0.0 5 -55 Normalized access time tAA vs. ambient temperature Ta 1.1 100 VCC = 5.0V 25 -10 35 80 125 Ambient temperature (C) 1.2 140 80 0 0.0 1.3 625 0.04 1.4 0.8 -55 6.0 120 100 ISB 0.4 1.5 1.1 140 0.6 0.0 -55 6.0 1.2 0.8 4.0 Output source current (mA) 4.5 5.0 5.5 Supply voltage (V) 1.4 1.3 0.8 0.2 Output sink current (mA) Normalized access time 1.5 1.0 Normalized ICC 0.4 ISB ICC Change in tAA (ns) 1.0 ICC Normalized supply current ISB1 vs. ambient temperature Ta Normalized ISB1 (log scale) Normalized supply current ICC, ISB vs. supply voltage VCC 1.4 Normalized ICC, ISB Normalized ICC, ISB Typical DC and AC characteristics VCC = 4.5V 25 20 15 10 5 0 1.25 2.5 3.75 Output voltage (V) 5.0 0 250 500 750 Capacitance (pF) 1000 7 AS7C1024 AS7C1024L Ordering codes Package \ Access Time 10 ns 12 ns 15 ns 20 ns 25 ns 35 ns Plastic DIP, 300 mil AS7C1024-10TPC AS7C1024L-10TPC AS7C1024-12TPC AS7C1024L-12TPC AS7C1024-15TPC AS7C1024L-15TPC AS7C1024-20TPC AS7C1024L-20TPC AS7C1024-25TPC AS7C1024L-25TPC AS7C1024-35TPC AS7C1024L-35TPC Plastic DIP, 400 mil AS7C1024-10PC AS7C1024L-10PC AS7C1024-12PC AS7C1024L-12PC AS7C1024-15PC AS7C1024L-15PC AS7C1024-20PC AS7C1024L-20PC AS7C1024-25PC AS7C1024L-25PC AS7C1024-35PC AS7C1024L-35PC Plastic SOJ, 300 mil AS7C1024-10TJC AS7C1024L-10TJC AS7C1024-12TJC AS7C1024L-12TJC AS7C1024-15TJC AS7C1024L-15TJC AS7C1024-20TJC AS7C1024L-20TJC AS7C1024-25TJC AS7C1024L-25TJC AS7C1024-35TJC AS7C1024L-35TJC Plastic SOJ, 400 mil AS7C1024-10JC AS7C1024L-10JC AS7C1024-12JC AS7C1024L-12JC AS7C1024-15JC AS7C1024L-15JC AS7C1024-20JC AS7C1024L-20JC AS7C1024-25JC AS7C1024L-25JC AS7C1024-35JC AS7C1024L-35JC TSOP 8x20 AS7C1024-10TC AS7C1024L-10TC AS7C1024-12TC AS7C1024L-12TC AS7C1024-15TC AS7C1024L-15TC AS7C1024-20TC AS7C1024L-20TC AS7C1024-25TC AS7C1024L-25TC AS7C1024-35TC AS7C1024L-35TC Shaded areas contain advance information. Part numbering system AS7C 1024 X DOMESTIC REPS KANSAS SRAM Prefix Device Number Blank CenTech ALABAMA (816) 358-8100 L Concord Component (205) 772-8883 ARKANSAS Southern States Marketing (214) 238-7500 -XX NEW JERSEY = StandardNorth Power Access Time = Low Power ERA Associates KENTUCKY CC Electro Sales (317) 921-5000 (800) 645-5500 South Electro Tech (610) 272-2125 X TEXAS EUROPE Package:States TP =Marketing PDIP 300 mil Britcomp P = Sales PDIP 400 mil Southern TJ = SOJ 300 mil Surrey, J = England SOJ 400 mil Austin T = TSOP 820 +44-1932 347077 (512) 835-5822 +44-1932 346256 Dallas Munich, Germany (214) 238-7500 LOUISIANA NEW YORK Representatives, distributors, and sales offices CALIFORNIA Southern States Marketing Houston North UTAH Brooks Technical (415) 960-3880 LA Area Competitive Tech. (714) 450-0170 San Diego NYC North (214) 238-7500 South (713) 895-8533 MAINE ERA Associates (516) 543-0510 Upstate VERMONT Rochester Kitchen & Kutchin (617) 229-2660 (716) 385-6500 Binghamton COLORADO MARYLAND NORTH CAROLINA Technology Sales (303) 692-8835 Chesapeake Tech. (301) 236-0530 CONNECTICUT MASSACHUSETTS Kitchen & Kutchin (203) 239-0212 DELAWARE Electro Tech (610) 272-2125 Kitchen & Kutchin (617) 229-2660 MICHIGAN (607) 722-3580 Concord Component (919) 846-3441 WEST VIRGINIA OHIO Midwest Marketing Assoc. Micro-Electronic Comp. MINNESOTA Deerfield Beach D. A. Case Associates (612) 831-6777 OKLAHOMA MISSOURI Southern States Marketing (214) 238-7500 (407) 682-9602 Tampa (813) 393-5011 GEORGIA Concord Component (770) 416-9597 HAWAII CenTech East (314) 291-4230 West (816) 358-8100 MISSISSIPPI Brooks Technical (415) 960-3880 Concord Component (205) 772-8883 IDAHO MONTANA ES/Chase (503) 684-8500 ES/Chase (503) 684-8500 ILLINOIS North NEBRASKA El-Mech (312) 794-9100 South CenTech (314) 291-4230 CenTech (816) 358-8100 NEVADA Brooks Technical (415) 960-3880 WASHINGTON D. A. Case Associates (612) 831-6777 Dayton Orlando Chesapeake Tech. (301) 236-0530 NORTH DAKOTA Lyndhurst (954) 426-8944 VIRGINIA ES/Chase (206) 823-9535 Enco Group (810) 338-8600 FLORIDA Charles Fields & Assoc. (801) 299-8228 Tri-Tech Kitchen & Kutchin (617) 229-2660 ATS (619) 634-1488 (713) 895-8533 (216) 381-8575 (513) 433-2511 OREGON ES/Chase (503) 684-8500 PENNSYLVANIA East Electro Tech (610) 272-2125 West Midwest Marketing (216) 381-8575 Chesapeake Tech. (301) 236-0530 WISCONSIN D. A. Case Associates (612) 831-6777 WYOMING Technology Sales (303)692-8835 INTERNATIONAL REPS AUSTRALIA Dingley R&D Electronics +61-3-9558-0444 Bayswater ACD +61-3-9762-7644 CANADA RHODE ISLAND J-Squared Technologies Kitchen & Kutchin (617) 229-2660 Ottawa SOUTH CAROLINA Toronto Concord Component (919) 846-3441 SOUTH DAKOTA D. A. Case Associates (612) 831-6777 INDIANA NEW HAMPSHIRE TENNESSEE CC Electro Sales (317) 921-5000 Kitchen & Kutchin (617) 229-2660 Concord Component (205) 772-8883 (613) 592-9540 (905) 672-2030 Montreal (514) 747-1211 Vancouver (604) 473-4666 Calgary (403) 291-6755 +49-894488496 C TAIWAN Asian Specific Tech. Commercial Temperature Range, +886-2-521-2363 0C to 70 C Golden Way Electronics +886-2-698-1868 x505 Puteam International +886-2-729-0373 Athismons, France +33-1-69387678 interACTIVE DISTRIBUTORS Great Britain, Ireland All American HQ: (305) 621-8282 +44-1773-740263 Ramtec Int'l B.V. Axis: Components, Inc. HQ: (800) 556-0225 Holland, Spain, Italy, Belgium, Hungary, Russia Future Electronics HQ: (514) 594-7710 +31-2526-21222 HONG KONG Eastele Technology +852-2798-8860 Interface Electronics HQ: (800) 632-7792 Please contact your rep to locate a distributor near you INDIA Priya Electronics, Inc. San Jose, CA USA (408) 954-1866 SALES OFFICES Satcom Sales & Srvcs. +91-40-761-4675 Alliance Semiconductor San Jose, CA (408) 383-4900 ISRAEL Eldis Technology +972-9-562-666 JAPAN Tokyo HEADQUARTERS NORTHEAST AREA Alliance Semiconductor Boston, MA (617) 239-8127 Bussan Micro Electronics +81-3-5421-1730 TECHNICAL CENTER Kyoto TAIWAN Rohm Co. Ltd. +81-75-311-2121 KOREA FM Korea +822-596-3880 fm@ktnet.co.kr Alliance Semiconductor Tel:+886-2-516-7995 Fax:+886-2-517-4928 alliance@netra.wow.net.tw Woo Young Tech +822-369-7099 MALAYSIA Exer Technologies +60-4-657-9592 PUERTO RICO Micro-Electronic Comp. (787) 746-9897 SINGAPORE Exer Technologies +65-749-1349 Alliance Semiconductor reserves the right to make changes in this data sheet at any time to improve design and supply the best product possible. Publication of advance information does not constitute a committment to produce or supply the product described. The company cannot assume responsibility for circuits shown or represent that they are free from patent infringement. Alliance products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of Alliance. ProMotion(R) and the Alliance logo are registered trademarks of Alliance Semiconductor Corporation. All other trademarks are property of their respective holders. 3099 North First Street Printed in U.S.A. ALLIANCE SEMICONDUCTOR San Jose, CA 95134 Tel (408) 383-4900 Fax (408) 383-4999 Copyright (c) 1996 All rights reserved. www.alsc.com June 1996