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參數資料
| 型號： | W40S11-03 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Low-voltage, 14-output Buffer(低電壓14輸出緩沖器（適合于驅動靜態DRAM- 雙列直插存儲器模塊(DIMM）) |
| 中文描述： | 低電壓，14輸出緩沖器（低電壓14輸出緩沖器（適合于驅動靜態內存，雙列直插存儲器模塊（DIMM）的） |
| 文件頁數： | 1/10頁 |
| 文件大小： | 127K |
| 代理商： | W40S11-03 |
SDRAM Buffer - 3 DIMM
W40S11-03
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
February 21, 2000, rev. **
Features
Fourteen skew-controlled CMOS outputs (SDRAM0:13)
Supports three SDRAM DIMMs
Ideal for high-performance systems designed around
Intel’s latest chip set
I
2
C serial configuration interface
Clock Skew between any two outputs is less than 250 ps
1 to 5 ns propagation delay
DC to 133-MHz operation
Single 3.3V supply voltage
Low power CMOS design packaged in a 28-pin, 300-mil
SOIC (Small Outline Integrated Circuit)
Overview
The Cypress W40S11-03 is a low-voltage, fourteen-output
buffer. Output buffer impedance is approximately 15
, which
is ideal for driving SDRAM DIMMs.
Key Specifications
Supply Voltages:........................................... V
DD
= 3.3V±5%
Operating Temperature:.................................... 0°C to +70°C
Input Threshold: ..................................................1.5V typical
Maximum Input Voltage:.......................................V
DD
+ 0.5V
Input Frequency:............................................... 0 to 133 MHz
BUF_IN to SDRAM0:13 Propagation Delay:......1.0 to 5.0 ns
Output Edge Rate:................................................. >1.5 V/ns
Output Skew:............................................................ ±250 ps
Output Duty Cycle: .................................. 45/55% worst case
Output Impedance:...............................................15
typical
Output Type:................................................CMOS rail-to-rail
I
2
C is a trademark of Philips Corporation.
Intel is a registered trademark of Intel Corporation.
Pin Configuration
Block Diagram
Note:
1.
Internal pull-up resistor of 250K on SDATA, SCLOCK, and OE
inputs.
[1]
SDRAM1
SDRAM2
SDRAM3
SDRAM4
SDRAM5
SDRAM6
SDRAM7
SDRAM8
SDRAM9
SDRAM10
SDRAM11
SDRAM12
SDRAM13
SDRAM0
Serial Port
SCLOCK
SDATA
Device Control
BUF_IN
OE
VDD
SDRAM0
SDRAM1
GND
VDD
SDRAM2
SDRAM3
GND
BUF_IN
SDRAM4
SDRAM5
SDRAM12
VDDIIC
SDATA
VDD
SDRAM11
SDRAM10
GND
VDD
SDRAM9
SDRAM8
GND
OE
SDRAM7
SDRAM6
SDRAM13
GND
SCLOCK
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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