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 VCC OUTPUTS
MODE VPP
Read VIL VIH VCC DOUT
Output
Disable VIH XV
CC High Z
Output XV
IL VCC High Z
Disable
Program VPP XV
CC DIN
Program
Verify VIL VIH VCC DOUT
VCC
A8
A9
A10
CS1/VPP
A11
CS2
O7
O6
O5
O4
O3
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
A10
CS1/VPP
A11
CS2
NC
O7
O6
A5 A6 A7 VCC A8 A9
NC
A4
A3
A2
A1
A0
NC
O0
O1 O2 NC O3 O4 O5
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
— tACC = 35 ns •Immune to Latch-UP
— tCS = 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 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
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.
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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.
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