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
X
V
CC
High Z
Output
X
V
IL
V
CC
High Z
Disable
Program
V
PP
X
V
CC
D
IN
Program
Verify
V
IL
V
IH
V
CC
D
OUT
V
CC
A
8
A
9
A10
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
4 3
2
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 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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