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参数资料
| 型号： | WS57C45-45TMB |
| 元件分类： | PROM |
| 英文描述： | 2K X 8 UVPROM, 45 ns, CDIP24 |
| 封装： | CERDIP-24 |
| 文件页数： | 1/9页 |
| 文件大小： | 72K |
| 代理商： | WS57C45-45TMB |
HIGH-SPEED 2K x 8 REGISTERED CMOS PROM/RPROM
KEY FEATURES
Ultra-Fast Access Time
DESC SMD Nos. 5962-88735/5962-87529
— 25 ns Setup
Pin Compatible with AM27S45 and
— 12 ns Clock to Output
CY7C245
Low Power Consumption
Immune to Latch-UP
Fast Programming
— Up to 200 mA
Programmable Synchronous or
ESD Protection Exceeds 2000 V
Asynchronous Output Enable
Programmable Asynchronous Initialize
Register
GENERAL DESCRIPTION
The WS57C45 is an extremely High Performance 16K UV Erasable Registered CMOS RPROM. It is a direct
drop-in replacement for such devices as the AM27S45 and CY7C245.
To meet the requirements of systems which execute and fetch instructions simultaneously, an 8-bit parallel data
register has been provided at the output which allows RPROM data to be stored while other data is being
addressed.
An asynchronous initialization feature has been provided which enables a user programmable 2049th word to be
placed on the outputs independent of the system clock. This feature can be used to force an initialize word or
provide a preset or clear function.
A further advantage of the WS57C45 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 WS57C45 RPROM in a windowed package is 100%
tested with worst case test patterns both before and after assembly.
WS57C45
2-21
VCC
A8
A9
A10
INIT/VPP
OE/OES
CP/PGM
O7
O6
O5
O4
O3
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
A10
INIT/VPP
OE/OES
CP/PGM
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
43
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
PIN CONFIGURATION
PRODUCT SELECTION GUIDE
PARAMETER
WS57C45-25
WS57C45-35
WS57C45-45
Set Up Time (Max)
25 ns
35 ns
45 ns
Clock to Output (Max)
12 ns
15 ns
25 ns
Chip Carrier
CERDIP/Plastic DIP/
Flatpack
Return to Main Menu
相关PDF资料 |
PDF描述 |
|---|---|
| WS57C49B-45FMB | 8K X 8 UVPROM, 45 ns, CDFP24 |
| WS57C49B-55TMB | 8K X 8 UVPROM, 55 ns, CDIP24 |
| WS57C49B-70T | 8K X 8 UVPROM, 70 ns, CDIP24 |
| WS57C49B-70D | 8K X 8 UVPROM, 70 ns, CDIP24 |
| WS57C49C-55J | 8K X 8 OTPROM, 55 ns, PQCC28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| WS57C49B-35J | 制造商:WSI 功能描述: |
| WS57C49B-35T | 制造商:WSI 功能描述: |
| WS57C49B-45D | 制造商:WSI 功能描述:EPROM, 8K x 8, 24 Pin, Ceramic, DIP |
| WS57C49B-70D | 制造商:WSI 功能描述: |
| WS57C49C | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH SPEED 8K x 8 CMOS PROM/RPROM |
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