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| WS57C49C MILITARY HIGH SPEED 8K x 8 CMOS PROM/RPROM KEY FEATURES * Ultra-Fast Access Time -- t ACC = 35 ns -- t CS = 20 ns * Pin Compatible with Bipolar PROMs * Immune to Latch-UP -- Up to 200 mA * Low Power Consumption * Fast Programming * ESD Protection Exceeds 2000 V * Available in 300 and 600 Mil DIP, CLLCC, and Flatpack GENERAL DESCRIPTION The WS57C49C is a High Performance 64K UV Erasable Electrically Re-Programmable Read Only Memory (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 WS57C49C 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 WS57C49C in a windowed package is 100% tested with worst case test patterns both before and after assembly. The WS57C49C 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 WS57C49B. MODE SELECTION PINS MODE Read Output Disable Program Program Verify CS1/VPP VIL VIH VPP VIL VCC VCC VCC VCC VCC OUTPUTS DOUT High Z PIN CONFIGURATION TOP VIEW Chip Carrier NC CERDIP/Flatpack A5 A 6 A 7 VCC A8 A9 DIN DOUT A4 A3 A2 A1 A0 NC O0 28 27 26 1 5 25 6 24 7 23 8 22 9 21 10 20 11 19 12 13 14 15 16 17 18 O1 O2 NC O3 O4 O5 432 A7 A6 A5 A10 A4 CS1/VPP A3 A11 A2 A12 A1 NC A0 O7 O0 O6 O1 O2 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 VCC A8 A9 A10 CS1/VPP A11 A12 O7 O6 O5 O4 O3 GND PRODUCT SELECTION GUIDE PARAMETER Address Access Time (Max) CS to Output Valid Time (Max) WS57C49C-35 35 ns 20 ns WS57C49C-45 45 ns 25 ns WS57C49C-55 55 ns 25 ns WS57C49C-70 70 ns 25 ns Return to Main Menu 4-9 WS57C49C ORDERING INFORMATION PART NUMBER WS57C49C-35CMB* WS57C49C-35TMB* WS57C49C-35DMB WS57C49C-45CMB* WS57C49C-45DMB* WS57C49C-45TMB* WS57C49C-55CMB* WS57C49C-55DMB* WS57C49C-55FMB* WS57C49C-55TMB* WS57C49C-70CMB* WS57C49C-70TMB* SPEED (ns) 35 45 45 45 45 45 55 55 55 55 70 70 PACKAGE TYPE 28 Pad CLLCC 24 Pin CERDIP, 0.3" 24 Pin CERDIP, 0.6" 28 Pad CLLCC 24 Pin CERDIP, 0.6" 24 Pin CERDIP, 0.3" 28 Pad CLLCC 24 Pin CERDIP, 0.6" 24 Pin Ceramic Flatpack 24 Pin CERDIP, 0.3" 28 Pad CLLCC 28 Pin CERDIP, 0.3" WSI PACKAGE OPERATING TEMPERATURE MANUFACTURING DRAWING RANGE PROCEDURE C1 T1 D1 C1 D1 T1 C1 D1 F1 T1 C1 T1 Military Military Military Military Military Military Military Military Military Military Military Military MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C NOTE: The actual part marking will not include the initials "WS." *SMD product. See page 4-1 for DESC SMD numbers. PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS REFER TO PAGE 5-1 The WS57C49C is programmed using Algorithm D shown on page 5-9. For complete data sheet and electrical specifications see page 2-39. Return to Main Menu 4-10 |
Price & Availability of WS57C49C-1
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