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PDF WS57C43 Data sheet ( Hoja de datos )

Número de pieza WS57C43
Descripción MILITARY HIGH SPED 4K x 8 CMOS PROM/RPROM
Fabricantes STMicroelectronics 
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No Preview Available ! WS57C43 Hoja de datos, Descripción, Manual

WS57C43C
HIGH SPEED 4K x 8 CMOS PROM/RPROM
KEY FEATURES
Ultra-Fast Access Time
— tACC = 25 ns
— tCS = 12 ns
Low Power Consumption
Fast Programming
Pin Compatible with 4K x 8 Bipolar PROMs
Immune to Latch-UP
— Up to 200 mA
ESD Protection Exceeds 2000 V
Available in 300 Mil DIP and PLDCC
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.
BLOCK DIAGRAM
7
A5 - A11
ROW
ADDRESSES
ROW
DECODER
EPROM ARRAY
32,768 BITS
5
A0 - A4
COLUMN
ADDRESSES
CS1/ VPP
CS2
COLUMN
DECODER
SENSE
AMPLIFIERS
8
OUTPUTS
PIN CONFIGURATION
TOP VIEW
Chip Carrier
CERDIP/Plastic DIP
NC
A5 A6 A7 VCC A8 A9
A7 1
A4
4
5
3
2
1
28 27 26
25
A10
A6 2
A5 3
A3
A2
A1
A0
NC
O0
6 24
7 23
8 22
9 21
10 20
11 19
12 13 14 15 16 17 18
CS1/VPP
A11
CS2
A4
A3
A2
4
5
6
NC A1 7
O7
O6
A0 8
O0 9
O1 10
O2 11
O1 O2 NC O3 O4 O5
GND
GND 12
24 VCC
23 A8
22 A9
21 A10
20 CS1/VPP
19 A11
18 CS2
17 O7
16 O6
15 O5
14 O4
13 O3
PRODUCT SELECTION GUIDE
PARAMETER
Address Access Time (Max)
CS to Output Valid Time (Max)
57C43C-25
25 ns
12 ns
57C43C-35
35 ns
20 ns
57C43C-45
45 ns
25 ns
57C43C-55
55 ns
25 ns
57C43C-70
70 ns
25 ns
Return to Main Menu
2-31

1 page




WS57C43 pdf
NORMALIZED SUPPLY CURRENT
vs.
SUPPLY VOLTAGE
1.60
1.40
1.20
1.00
0.80
0.60
4.0
4.5 5.0 5.5
SUPPLY VOLTAGE ( V)
6.0
WS57C43C
TYPICAL ACCESS TIME CHANGE
vs.
OUTPUT LOADING
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
0.0
200 400 600 800
CAPACITANCE ( pF)
1000
NORMALIZED Taa
vs.
AMBIENT TEMPERATURE
1.6
1.4
1.2
1.0
0.8
0.6
-55 -35 -15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
NORMALIZED SUPPLY CURRENT
vs.
AMBIENT TEMPERATURE
1.2
1.1
1.0
0.9
0.8
-55 -35 -15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
2-35

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