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HYB514256B-70 Datasheet(PDF) 1 Page - Siemens Semiconductor Group |
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HYB514256B-70 Datasheet(HTML) 1 Page - Siemens Semiconductor Group |
1 / 22 page Semiconductor Group 55 01.95 • 262 144 words by 4-bit organization • Fast access and cycle time 50 ns access time 95 ns cycle time (-50 version) 60 ns access time 110 ns cycle time (-60 version) 70 ns access time 130 ns cycle time (-70 version) • Fast page mode cycle time 35 ns (-50 version) 40 ns (-60 version) 45 ns (-70 version) • Low power dissipation max. 495 mW active (-50 version) max. 440 mW active (-60 version) max. 385 mW active (-70 version) max. 5.5 mW standby max. 1.1 mW standby for L-version Ordering Information Type Ordering Code Package Description HYB 514256B-50 Q67100-Q1044 P-DIP-20-2 DRAM (access time 50ns) HYB 514256B-60 Q67100-Q530 P-DIP-20-2 DRAM (access time 60 ns) HYB 514256B-70 Q67100-Q433 P-DIP-20-2 DRAM (access time 70 ns) HYB 514256BJ-50 Q67100-Q1054 P-SOJ-26/20-1 DRAM (access time 50 ns) HYB 514256BJ-60 Q67100-Q536 P-SOJ-26/20-1 DRAM (access time 60 ns) HYB 514256BJ-70 Q67100-Q537 P-SOJ-26/20-1 DRAM (access time 70 ns) HYB 514256BL-50 on request P-DIP-20-2 DRAM (access time 50 ns) HYB 514256BL-60 Q67100-Q542 P-DIP-20-2 DRAM (access time 60 ns) HYB 514256BL-70 Q67100-Q543 P-DIP-20-2 DRAM (access time 70 ns) HYB 514256BJL-50 on request P-SOJ-26/20-1 DRAM (access time 50 ns) HYB 514256BJL-60 Q67100-Q608 P-SOJ-26/20-1 DRAM (access time 60 ns) HYB 514256BJL-70 Q67100-Q607 P-SOJ-26/20-1 DRAM (access time 70 ns) 256 K × 4-Bit Dynamic RAM Low Power 256 K × 4-Bit Dynamic RAM Advanced Information • Single + 5 V ( ± 10 %) supply with a built-in V BB generator • Output unlatched at cycle end allows two- dimensional chip selection • Read-modify-write, CAS-before-RAS refresh, RAS-only refresh, hidden-refresh and fast page mode capability • All inputs, outputs and clocks TTL-compatible • 512 refresh cycles/8 ms 512 refresh cycles/64 ms for L-version only • Plastic Packages: P-DIP-20-2, P-SOJ-26/20-1 HYB 514256B/BJ-50/-60/-70 HYB 514256BL/BJL-50/-60/-70 |
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