57C49C-45TI STMicroelectronics, 57C49C-45TI Datasheet

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57C49C-45TI

Manufacturer Part Number
57C49C-45TI
Description
Manufacturer
STMicroelectronics
Datasheet

Specifications of 57C49C-45TI

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Part Number:
57C49C-45TI
Quantity:
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Part Number:
57C49C-45TI
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BLOCK DIAGRAM
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.
PRODUCT SELECTION GUIDE
— t
— t
Ultra-Fast Access Time
Fast Programming
Low Power Consumption
PARAMETER
Address Access Time (Max)
CS to Output Valid Time (Max)
ACC
CS
A5 - A12
ROW
ADDRESSES
A0 - A4
COLUMN
ADDRESSES
CS1/ V
= 12 ns
= 25 ns
Return to Main Menu
PP
5
8
HIGH SPEED 8K x 8 CMOS PROM/RPROM
DECODER
ROW
EPROM ARRAY
AMPLIFIERS
65,536 BITS
DECODER
COLUMN
OUTPUTS
SENSE
8
57C49C-25
25 ns
12 ns
GENERAL DESCRIPTION
KEY FEATURES
57C49C-35
PIN CONFIGURATION
35 ns
20 ns
NC
O
A
A
A
A
A
4
3
2
1
0
0
Pin Compatible with Bipolar PROMs
— Up to 200 mA
ESD Protection Exceeds 2000 V
Available in 300 Mil DIP and PLDCC
Immune to Latch-UP
5
6
7
8
9
10
11
O
A
12 13 14 15 16 17 18
4 3 2
1
5
O
A
6
2
Chip Carrier
GND
A
7
57C49C-45
NC O
NC
1
V
45 ns
25 ns
28 27 26
CC
3
O
A
4
8
O
A
9
25
24
23
22
21
20
19
5
TOP VIEW
A
CS1/V
A
A
NC
O
O
10
11
12
7
6
57C49C-55
PP
55 ns
25 ns
GND
CERDIP/Plastic DIP
O
O
O
A
A
A
A
A
A
A
A
7
6
5
4
3
2
1
0
0
1
2
WS57C49C
1
2
3
4
5
6
7
8
9
10
11
12
Flatpack
57C49C-70
24
23
22
21
20
19
18
17
16
15
14
13
70 ns
25 ns
V
A
A
A 10
CS1/V
A
A
O
O
O
O
O
CC
8
9
11
12
7
6
5
4
3
2-39
PP

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