280256 ween AA VF YTB & Hi A nv Bl se GE g # & TAAC | TCAC | TCH | TOE | TOD vod T DD/STANDBY VIL VIH [Ci VOL/ I VOL VOH/TVOH | Co (C) max | max | max) max. | max max min | max max ain max (+typ] (ns) | (ns) | (ns) | (ns) | (ns) ) (ma) W) WW) | (pF) | (V/A) (V/mA) (pk) 280256 12 MICROCHIP O~70} 120] 120 0 50 50 4.5~5,5 70/0. 15 0.8 2.0 10 0, 45/2. 1 2. 4/0. 4 10 280256-120 SEEQ O-~70 | 120} 120 0 35 36 4.55.5 60/3 0.8 2.0 6 0. 4/6 2.4/4 12 280256-15 MICROCHIP O~70 | 150} 150 0 70 65 4.5~5.5 70/0. 15 0.8 2.0 10 0. 45/2.1 2.4/0.4 10 280256-20 MICROCHIP 0-70; 200] 200 0 80 70 4.5~5.5 70/0. 15 0.8 2.0 10 0. 45/2. 1 2. 4/0. 4 10 280256-25 MICROCHIP O-~70 | 250] 250 0} 100 70 4.5~5.5 70/0. 15 0.8 2.0 10 0. 45/2.1 2.4/0.4 10 280256-250 SEEQ O-~70 } 250] 250 0 60 4.5~5.5 60/2 0.8 2.0 6 0. 45/2. 1 2.4/0.4 12 280256-300 SEEQ O~70 4 300} 300 0 80 4.5~5.5 60/2 0.8 2.0 6 0. 45/2. 1 2.4/0.4 12 280256-350 SEEQ O~70{ 350} 350 0 80 4.5~0.5 60/2 0.8 2.0 6 0. 45/2. 1 2.4/0.4 12 280256-70 SEEQ 0~70 70 70 0 35 35 4.5~5.5 60/3 0.8 2.0 6 0.4/6 2.4/4 12 280256-90 MICROCHIP 0-~70 90 90 0 40] 40 4,5~5.5 70/0. 15 0.8 2.0 10 0. 45/2.1 2.4/0.4 10 280256-90 SEEQ 0~~70 90 90 0 35 35 4.5~5.5 60/3 0.8 2.0 6 0.4/6 2.4/4 12 280256A-150 SEEQ O~-70} 150) 150 0 35 35 4.5~5.5 60/3 0.8 2.0 6 0. 4/6 2.4/4 12 28C256A-200 SEEQ O-~70} 200} 200 0 6 35 4.5~5.5 60/3 0.8 2.0 6 9.4/6 2.4/4 12 280256A-250 SEEQ O~~70 | 250 | 250 0 35 35 4.5~5.5 60/3 0.8 2.0 6 0. 4/6 2.4/4 12 28C256AH-150 SEEQ O~70} 150} 150 0 35} 35 4.5~5.5 60/3 0.8 2.0 6 0.4/6 2.4/4 12 28C256AH-200 SEEQ O~70] 200; 200 0 35; 35 4.55.5 60/3 0.8 2.0 6 0. 4/6 2.4/4 12 28C256AH-250 SEEQ O-~70 | 250 | 250 0 35] 35 4.5~5.5 60/3 0.8 2.0 0. 4/6 2.4/4 12 280256H- 120 SEEQ O-~70 | 120; 120 0 35] 35 4.5~5.5 60/3 0.8 2.0 6 0. 4/6 2.4/4 12 28C256H-70 SEEQ 0-~70 70 70 0 35 35 4,5~5.5 60/3 0.8 2.0 6 0. 4/6 2.4/4 12 28C256H-90 SEEQ O~70} 90 90 0 354) 35 4.5~5.5 60/3 0.8 2.0 6 0.4/6 2.4/4 12 28F256-170P102 INTEL O~~70 | 170] 170 0 0) 35 4.5~5.5 30/1.0 0.8 2.0 6 0. 45/2. 1 2.4/2.5 12 28F256-170P202 INTEL O~~70} 170] 170 0 | 35 4.5~5.5 30/1. 0 0.8 2.0 6 0. 45/2. 1 2.4/2.5 12 28F256-200P102 INTEL O~70} 200] 200 0 | 45 4.5~5.5 30/1.0 0.8 2.0 6 0. 45/2.1 2.4/2.5 12 28F256-200P202 INTEL O-~70} 200; 200 0 7} 45 4.5~5.5 30/1.0 0.8 2.0 6 0. 45/2.1 2.4/2.5 12 28F256-250P102 INTEL O-~~70 | 250} 250 oO; 380 55 4.5~5.5 30/1.0 0.8 2.0 6 0. 45/2. 1 2.4/2.5 12 28F256-250P202 INTEL O~70] 250) 250 0; 80 59 4.5-~-5.5 30/1.0 0.8 2.0 6 0. 45/2. 1 2.4/2.5 12 AT280256-15 ATMEL O--70} 120 0 bo} 50 4.5~5.5 80/3 0.8 2.0) 4* 0. 45/2. 1 2.4/0.4 | 8 AT280256-15 ATMEL O-~~70 | 150} 150 0 70; 50 4. 5~-5.5 80/3 08 2] 4 0. 45/2. 1 2.4/0.4] 8 AT28C256-20 ATMEL O~~-70 } 200] 200 0 80) 55 4.5~5.5 80/3 0.8 2) 4 0, 45/2. 1 2.4/0.4] 8 AT280256-20 ATMEL O~70 F 150 0 70 55 4.5~5.5 80/3 0.8 2.0 4s 0. 45/2. 1 2. 4/0. 4 8 AT28C256-25 ATMEL O-~70 | 250] 250 0 60 4.5~5.5 80/3 0.8 2.0 6 0, 45/2. 1 2.4/0.4 12 AT28C256-25 ATMEL O--70} 200 0 80; 60 4.5~5.5 80/3 0.8 2.0} 4 0. 45/2.1 2.4/0.4) 8 AT28C256-25 ATMEL O-~70} 250] 250 0} 100; 60 4, 5~5. 5 80/3 0.8 2| 4 0. 45/2. 1 2.4/0.4] 8+ AT280256-35 ATMEL O~~70} 350] 350 QO} 120; 70 4, 5~-5.5 80/3 6.8 2] 4* 0. 45/2. 1 2.4/0.4] 8+ AT28C256F-15 ATMEL O--70} 120 0 60} 50 4,5~5.5 80/3 0.8 2.0) 4 0. 45/2. 1 2.4/0.4] 8 AT28C256F-20 ATMEL O--70| 150 0 70 55 4.5~5.5 80/3 0.8 20) 4 0. 45/2. 1 2.4/0.4} 8 AT28C256E - 25 ATMEL 0~-70 | 200 0 80 60 4.5~-5. 5 80/3 0.8 20) 4 0. 45/2. 1 2.4/0.4] 8 AT28HC256- 120 ATMEL O~-70 | 120 | 120 0 50 4.5~5.5 80/50 0.8 2.0 6 0. 45/2.1 2.4/0.4 12 AT28HC256- 120 ATMEL O--70} 120} 120 0 30 50 4.5~5.5 80/50 0.8 2| 4* 0. 45/8 2.4/4 | 8* AT28HC256-70 ATMEL 0-~70 70 70 0 6 35 4.5~5.5 80/50 0.8 2| 4% 0. 45/8 2.4/4] Be AT28HC256- 90 ATMEL 0-~70 90 90 0 40] 40 4.5~5.5 80/50 0.8 2| 4* 0. 45/8 2.4/4] 8+ AT2BHC256L~120 ATMEL O-~70 | 120} 120 0 30 50 4.5~5.5 80/5 0.8 2} 4* 0. 45/8 2.4/4} 8+ 110 256K CMOS EEPROM (32,768x8) 28PIN Orv #R Ose @7ny7h @ AWHATNKT TTL 2e7e8F 7. @ 7-F7HH DOIS3AF--T.- 3 BD Fo TeeTRSLETHNLA-THb". o-+ | BM AFA E-FAN. com (262144) @ 28C256 (Seeq). Ao~ Ara ROM+ JL # oY a ! Zr Lae? a CS O+] x x a OE YIP JL 8 (/O0~-1/O7 OUR Vpp : +5V_ Pin28 . Vss(GND) Pin 14 Ok @ READ @ WRITE Mtr A W IT 1/0 CE E | WE H X xX High-Z Stand-by L L H DO Read L H L DI Write xX x H High-Z | Write Inhibit Xx L X High-Z | Write Inhibit