CMOS Static RAM 64K (16K x 4-Bit) IDT7188S IDT7188L Features innovative circuit design techniques, provides a cost effective approach for memory intensive applications. Access times as fast as 25ns are available. The IDT7188 offers a reduced power standby mode, ISB1, which is activated when CS goes HIGH. This capability significantly decreases power while enhancing system reliability. The low-power version (L) version also offers a battery backup data retention capability where the circuit typically consumes only 30W operating from a 2V battery. All inputs and outputs are TTL-compatible and operate from a single 5V supply. The IDT7188 is packaged in a 22-pin, 300 mil ceramic DIP providing excellent board-level packing densities. Military grade product is manufactured in compliance with the latest revision of MIL-STD-883, Class B, making it ideally suited to military temperature applications demanding the highest level of performance and reliability. High-speed (equal access and cycle times) - Military: 25/35/45/55/70/85ns (max.) Low power consumption Battery backup operation -- 2V data retention (L version only) Available in high-density industry standard 22-pin, 300 mil ceramic DIP Produced with advanced CMOS technology Inputs/outputs TTL-compatible Military product compliant to MIL-STD-883, Class B Description The IDT7188 is a 65,536-bit high-speed static RAM organized as 16K x 4. It is fabricated using IDT's high-performance, high-reliability technology -- CMOS. This state-of-the-art technology, combined with Functional Block Diagram A0 VCC GND 65,536-BIT MEMORY ARRAY DECODER A13 I/O0 I/O1 I/O2 COLUMN I/O INPUT DATA CONTROL I/O3 , CS WE 2989 drw 01 FEBRUARY 2001 1 (c)2000 Integrated Device Technology, Inc. DSC-2989/09 IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range Absolute Maximum Ratings(1) Pin Configuration A0 A1 A2 A3 A4 A5 A6 A7 A8 CS GND 1 22 2 21 3 20 4 19 18 D22-1 5 6 17 7 16 8 15 9 14 10 13 11 12 V CC A 13 A 12 A 11 A 10 A9 I/O 3 I/O 2 I/O 1 I/O 0 WE Rating Value VTERM Terminal Voltage with Respect to GND -0.5 to +7.0 V Operating Temperature -55 to +125 o C TBIAS Temperature Under Bias -65 to +135 o C TSTG Storage Temperature -65 to +150 o C TA Unit PT Power Dissipation 1.0 W IOUT DC Output Current 50 mA 2989 tbl 03 NOTE: 1. 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 above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. , 2989 drw 02 DIP Top View Symbol Capacitance (TA = +25C, f = 1.0MHz, VCC = 0V) Parameter(1) Symbol Pin Descriptions Name Description A0 - A13 Address Inputs CS Chip Select WE Write Enable I/O0 - I/O3 Data Input/Output VCC Power GND Ground I/O Capacitance V IN = 0V 6 pF VOUT = 0V 6 pF Recommended DC Operating Conditions Symbol (1) WE I/O Power Standby H X High-Z Standby Read L H DOUT Active Write L L DIN Active NOTE: 1. H = VIH, L = VIL, X = don't care. CI/O Unit 2989 tbl 04 CS Mode Input Capacitance Max. NOTE: 1. This parameter is determined by device characterization, but is not production tested. 2989 tbl 01 Truth Table CIN Conditions Parameter V CC Supply Voltage GND Ground Min. Typ. Max. Unit 4.5 5.0 5.5 V 0 0 0 V 6.0 V 0.8 V V IH Input High Voltage 2.2 ____ V IL Input Low Voltage -0.5(1) ____ NOTE: 1. VIL (min.) = -3.0V for pulse width less than 20ns,once per cycle. 2989 tbl 05 Recommended Operating Temperature and Supply Voltage 2989 tbl 02 Grade Military Temperature O O -55 C to +125 C GND Vcc 0V 5V 10% 2989 tbl 06 2 IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range DC Electrical Characteristics (VCC = 5.0V 10%) IDT7188S Symbol Parameter Test Conditions IDT7188L Min. Max. Min. Max. Unit |ILI| Input Leakage Current VCC = Max., VIN = GND to VCC ____ 10 ____ 5 A |ILO| Output Leakage Current VCC = Max., CS = VIH, VOUT = GND to V CC ____ 10 ____ 5 A VOL Output Low Voltage IOL = 10mA, VCC = Min. ____ 0.5 ____ 0.5 V IOL = 8mA, VCC = Min. ____ 0.4 ____ 0.4 2.4 ____ 2.4 ____ VOH Output High Voltage IOH = -4mA, VCC = Min. V 2989 tbl 07 DC Electrical Characteristics(1) (VCC = 5V 10%, VLC = 0.2V, VHC = VCC - 0.2V) Symbol ICC1 ICC2 ISB ISB1 Power 7188S25 7188L25 7188S35 7188L35 7188S45 7188L45 7188S55 7188L55 7188S70 7188L70 7188S85 7188L85 Unit Operating Power Supply Current CS = VIL, Outputs Open V CC = Max., f = 0(2) S 105 105 105 105 105 105 mA L 80 80 80 80 80 80 Dynamic Operating Current CS = VIL, Outputs Open V CC = Max., f = fMAX(2) S 155 140 140 140 140 140 L 120 115 110 110 110 105 Standby Power Supply Current (TTL Level) CS > VIH, Outputs Open V CC = Max., f = fMAX(2) S 60 50 50 50 50 50 L 40 40 35 35 35 35 Full Standby Power Supply Current (CMOS Level) CS > VHC, VCC = Max., VIN > VHC or VIN < VLC, f = 0(2) S 20 20 20 20 20 20 L 1.5 1.5 1.5 1.5 1.5 1.5 Parameter NOTES: 1. All values are maximum guaranteed values. 2. At f = fMAX address and data inputs are cycling at the maximum frequency of read cycles of 1/tRC. f = 0 means no input lines change. 6.42 3 mA mA mA 2989 tbl 08 IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range Data Retention Characteristics (L Version Only) (VHC = VCC - 0.2V) Typ. (1) VCC @ Symbol Parameter VDR VCC for Data Retention ICCDR Data Retention Current tCDR(3) Chip Desele ct to Data Retention Time tR(3) Operation Recovery Time IILII(3) Input Leakage Current Max. VCC @ Test Condition Min. 2.0V 3.0V 2.0V 3.0V Unit ____ 2.0 ____ ____ ____ ____ V ____ 10 15 600 900 A 0 ____ ____ ____ ____ ns tRC(2) ____ ____ ____ ____ ns ____ ____ ____ 2 2 A CS > VHC VIN > VHC or < VLC 2989 tbl 09 NOTES: 1. TA = +25C. 2. tRC = Read Cycle Time. 3. This parameter is guaranteed by device characterization but is not production tested. Low VCC Data Retention Waveform DATA RETENTION MODE VCC 4.5V 4.5V VDR 2V t CDR V IH CS VDR tR , V IH 2989 drw 03 AC Test Conditions Input Pulse Levels GND to 3.0V Input Rise/Fall Times 5ns Input Timing Reference Levels 1.5V Output Reference Levels 1.5V AC Test Load See Figures 1 and 2 2989 tbl 10 5V 5V 480 480 DATA OUT DATA OUT 255 30pF* 255 , 2989 drw 04 5pF* 2989 drw 05 Figure 1. AC Test Load Figure 2. AC Test Load (for tHZ , tLZ, tWZ, tOHZ and tOW ) *Includes scope and jig capacitances 4 , IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range AC Electrical Characteristics 7188S25 7188L25 (VCC = 5.0V 10%) 7188S35 7188L35 7188S45 7188L45 7188S55 7188L55 7188S70 7188L70 7188S85 7188L85 Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit Read Cycle Time 25 ____ 35 -- 45 -- 55 ____ 70 ____ 85 ____ ns tAA Address Access Time ____ 25 ____ 35 ____ 45 ____ 55 ____ 70 ____ 85 ns tACS Chip Select Access Time ____ 25 ____ 35 ____ 45 ____ 55 ____ 70 ____ 85 ns tOH Output Hold from Address Change 5 ____ 5 ____ 5 ____ 5 ____ 5 ____ 5 ____ ns tLZ(1) Output Select to Output in Low-Z 5 ____ 5 ____ 5 ____ 5 ____ 5 ____ 5 ____ ns tHZ(1) Chip Deselect to Output in High-Z ____ 10 ____ 14 ____ 14 ____ 20 ____ 25 ____ 30 ns tPU(1) Chip Select to Power Up Time 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ ns tPD(1) Chip Deselect to Power Down Time ____ 25 ____ 35 ____ 45 ____ 55 ____ 70 ____ 85 ns Symbol Parameter Read Cycle tRC 2989 tbl 11 NOTE: 1. This parameter is guaranteed by device characterization but is not production tested. Timing Waveform of Read Cycle No. 1(1,2) tRC (5) ADDRESS tAA tOH DATAOUT PREVIOUS DATA VALID , DATA VALID 2989 drw 06 Timing Waveform of Read Cycle No. 2(1,3) tRC (5) CS tACS tHZ (4) tLZ (4) DATAOUT DATA VALID tPU HIGH IMPEDANCE tPD ICC VCC SUPPLY CURRENT ISB 2989 drw 07 NOTES: 1. WE is HIGH for Read cycle. 2. CS is LOW for Read cycle. 3. Address valid prior to or coincident with CS transition LOW. 4. Transition is measured 200mV from steady state voltage. 5. All Read cycle timings are referenced from the last valid address to the first transitioning address. 6.42 5 , IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range AC Electrical Characteristics 7188S25 7188L25 Symbol Parameter (VCC = 5.0V 10%) 7188S35 7188L35 7188S45 7188L45 7188S55 7188L55 7188S70 7188L70 7188S85 7188L85 Unit Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 20 ____ 30 ____ 40 ____ 50 ____ 60 ____ 75 ____ ns 25 ____ 35 ____ 50 ____ 60 ____ 75 ____ ns Write Cycle tWC Write Cycle Time tCW Chip Select to End-of-Write 20 ____ tAW Address Valid to End-of-Write 20 ____ 25 ____ 35 ____ 50 ____ 60 ____ 75 ____ ns tAS Address Set-up Time 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ ns 20 ____ 25 ____ 35 ____ 50 ____ 60 ____ 75 ____ ns 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ ns Write Pulse Width tWP tWR Write Recovery Time 0 ____ tDW Data Valid to End-of-Write 13 ____ 15 ____ 20 ____ 25 ____ 30 ____ 35 ____ ns tDH Data Hold Time 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ 0 ____ ns ____ 7 ____ 10 ____ 15 ____ 25 ____ 30 ____ 40 ns 5 ____ 5 ____ 5 ____ 5 ____ 5 ____ 5 ____ ns tWZ(1) Write Enable to Output in High-Z tOW(1) Output Active from End-of-Write 2989 tbl 12 NOTE: 1. This parameter is guaranteed by device characterization. Timing Waveform of Write Cycle No. 1 (WE Controlled Timing)(1,2,3) tWC ADDRESS tAW CS1, CS2 tWP tAS tWR WE tWZ (6) DATAOUT tOW (6) (4) (4) tDW , tDH DATA VALID DATAIN 2989 drw 08 NOTES: 1. WE or CS must be HIGH during all address transitions. 2. A write occurs during the overlap (tWP) of a LOW CS and a LOW WE. 3. tWR is measured from the earlier of CS or WE going HIGH to the end of the write cycle. 4. During this period, I/O pins are in the output state so that the input signals should not be applied. 5. If the CS LOW transition occurs simultaneously with or after the WE LOW transition, the outputs remain in the high-impedance state. 6. Transition is measured 200mV from steady state. 6 IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range Timing Waveform of Write Cycle No. 2 (CS Controlled Timing)(1,2,3,5) tWC ADDRESS tAW CS tAS t WR tCW WE , tDW tDH DATA VALID DATAIN 2989 drw 09 NOTES: 1. WE or CS must be HIGH during all address transitions. 2. A write occurs during the overlap (tWP) of a LOW CS and a LOW WE. 3. tWR is measured from the earlier of CS or WE going HIGH to the end of the write cycle. 4. During this period, I/O pins are in the output state so that the input signals should not be applied. 5. If the CS LOW transition occurs simultaneously with or after the WE LOW transition, the outputs remain in the high-impedance state. 6. Transition is measured 200mV from steady state. Ordering Information IDT 7188 X XX X X Device Type Power Speed Package Process/ Temperature Range B Military (-55C to +125C) Compliant to MIL-STD-883, Class B D 300 mil Ceramic DIP (D22-1) 25 35 45 55 70 85 S L Speed in nanoseconds Standard Power Low Power 2989 drw 10 6.42 7 , IDT7188S/L CMOS Static RAM 64K (16K x 4-Bit) Military Temperature Range Datasheet Document History 11/xx/99 Pg. 2, 3, 4 Pg. 8 08/09/00 02/01/01 Updated to new format Removed commercial temperature data Added Datasheet Document History Not recommended for new designs Removed "Not recommended for new designs" CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com The IDT logo is a registered trademark of Integrated Device Technology, Inc. 8 for Tech Support: ipchelp@idt.com 800-345-7015