product selection guide parameter WS57C43C-35 WS57C43C-45 WS57C43C-55 WS57C43C-70 address access time (max) 35 ns 45 ns 55 ns 70 ns cs to output valid time (max) 20 ns 25 ns 25 ns 25 ns WS57C43C pins cs1 cs2 v cc outputs mode v pp read v il v ih v cc d out output disable v ih xv cc high z output xv il v cc high z disable program v pp xv cc d in program verify v il v ih v cc d out v cc a 8 a 9 a 10 cs1/v pp a 11 cs2 o 7 o 6 o 5 o 4 o 3 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 o 0 o 1 o 2 gnd a 10 cs1/v pp a 11 cs2 nc o 7 o 6 a 5 a 6 a 7 v cc a 8 a 9 nc a 4 a 3 a 2 a 1 a 0 nc o 0 o 1 o 2 nc o 3 o 4 o 5 gnd 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 1 432 28 27 26 25 24 23 22 21 20 19 5 6 7 8 9 10 11 12 13 14 15 16 17 18 top view chip carrier cerdip mode selection pin configuration 4-7 military high sped 4k x 8 cmos prom/rprom key features ultra-fast access time ? pin compatible with 4k x 8 bipolar proms ? t acc = 35 ns immune to latch-up ? t cs = 20 ns ? up to 200 ma ? low power consumption esd protection exceeds 2000 v fast programming available in 300 mil dip and cllcc desc smd no. 5962-906580 general description the WS57C43C is a high performance 32k uv erasable electrically r e-p rogrammable r ead o nly m emory (rprom). it is manufactured in an advanced cmos technology which enables it to operate at bipolar prom speeds while consuming only 25% of the power required by its bipolar counterparts. a further advantage of the WS57C43C over bipolar prom devices is the fact that it utilizes a proven eprom technology. this enables the entire memory array to be tested for switching characteristics and functionality after assembly. unlike devices which cannot be erased, every ws5743c in a windowed package is 100% tested with worst case test patterns both before and after assembly. the WS57C43C is configured in the standard bipolar prom pinout which provides an easy upgrade path for systems which are currently using bipolar proms, or its predecessor, the ws57c43b. return to main menu
ordering information speed package package operating wsi part number (ns) type drawing temperature manufacturing range procedure WS57C43C-35cmb * 35 28 pad cllcc c1 military mil-std-883c WS57C43C-35tmb * 35 24 pin cerdip, 0.3" t1 military mil-std-883c WS57C43C-45tmb * 45 24 pin cerdip, 0.3" t1 military mil-std-883c WS57C43C-55tmb * 55 24 pin cerdip, 0.3" t1 military mil-std-883c WS57C43C 4-8 note: the actual part marking will not include the initials "ws." * smd product. see page 5-1 for desc smd numbers. programming/algorithms/erasure/programmers refer to page 5-1 the WS57C43C is programmed using algorithm d shown on page 5-9. for complete data sheet and electrical specifications see page 2-31. return to main menu
|
