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IDT71256S25Y Datasheet(PDF) 2 Page - Integrated Device Technology |
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IDT71256S25Y Datasheet(HTML) 2 Page - Integrated Device Technology |
2 / 9 page 7.2 2 IDT71256 S/L CMOS STATIC RAM 256K (32K x 8-BIT) MILITARY AND COMMERCIAL TEMPERATURE RANGES PIN CONFIGURATIONS TRUTH TABLE (1) WE WE CS CS OE OE I/O Function X H X High-Z Standby (ISB) XVHC X High-Z Standby (ISB1) H L H High-Z Output Disabled HL L DOUT Read Data LL X DIN Write Data NOTE: 2946 tbl 02 1. H = VIH, L = VIL, X = Don’t Care ABSOLUTE MAXIMUM RATINGS (1) Symbol Rating Com’l. Mil. Unit VTERM Terminal Voltage –0.5 to +7.0 –0.5 to +7.0 V with Respect to GND TA Operating 0 to +70 –55 to +125 °C Temperature TBIAS Temperature –55 to +125 –65 to +135 °C Under Bias TSTG Storage –55 to +125 –65 to +150 °C Temperature PT Power Dissipation 1.0 1.0 W IOUT DC Output 50 50 mA Current NOTE: 2946 tbl 03 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 con- ditions for extended periods may affect reliability. CAPACITANCE (TA = +25 °C, f = 1.0MHz) Symbol Parameter (1) Conditions Max. Unit CIN Input Capacitance VIN = 0V 11 pF CI/O I/O Capacitance VOUT = 0V 11 pF NOTE: 2946 tbl 04 1. This parameter is determined by device characterization, but is not production tested. PIN DESCRIPTIONS Name Description A0–A14 Addresses I/O0–I/O7 Data Input/Output CS Chip Select WE Write Enable OE Output Enable GND Ground VCC Power 2946 tbl 01 2946 drw 02 5 6 7 8 9 10 11 12 A12 1 2 3 4 24 23 22 21 20 19 18 17 D28-3 P28-1 P28-2 D28-1 SO28-5 13 14 28 27 26 25 A7 A6 A5 A4 A3 A2 A1 A0 I/O 0 I/O 1 V CC WE A8 A9 A11 OE A10 CS I/O 7 16 15 I/O 2 GND I/O 6 I/O 5 I/O 4 I/O 3 A14 A13 32-Pin LCC TOP VIEW DIP/SOJ TOP VIEW 5 6 7 8 9 10 11 L32-1 29 28 27 26 25 24 23 15 16 17 18 19 32 1 32 31 INDEX A3 A2 OE NC A8 A9 A11 A10 CS 12 22 13 21 A6 A5 A4 2946 drw 03 A1 A0 I/O0 4 30 20 14 I/O7 I/O6 NC |
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