HYB514256BJ-70

256 K × 4-Bit Dynamic RAM Low Power 256 K × 4-Bit Dynamic RAM HYB 514256B/BJ-50/-60/-70 HYB 514256BL/BJL-50/-60/-70 Advanced Information 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 Single + 5 V (± 10 %) supply with a built-in VBB generator Output unlatched at cycle end allows twodimensional 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 Ordering Information Type HYB 514256B-50 HYB 514256B-60 HYB 514256B-70 HYB 514256BJ-50 HYB 514256BJ-60 HYB 514256BJ-70 HYB 514256BL-50 HYB 514256BL-60 HYB 514256BL-70 HYB 514256BJL-50 HYB 514256BJL-60 HYB 514256BJL-70 Ordering Code Q67100-Q1044 Q67100-Q530 Q67100-Q433 Q67100-Q1054 Q67100-Q536 Q67100-Q537 on request Q67100-Q542 Q67100-Q543 on request Q67100-Q608 Q67100-Q607 Package P-DIP-20-2 P-DIP-20-2 P-DIP-20-2 P-SOJ-26/20-1 P-SOJ-26/20-1 P-SOJ-26/20-1 P-DIP-20-2 P-DI...