首页 |元器件品牌

DDR110-27T7RL [STMICROELECTRONICS]

DOUBLE DATA RATE TERMINATION NETWORK WITH DISABLE SWITCH; 具有禁用开关双倍数据率终端网络
DDR110-27T7RL
型号： DDR110-27T7RL
厂家： ST    ST
描述：

DOUBLE DATA RATE TERMINATION NETWORK WITH DISABLE SWITCH
具有禁用开关双倍数据率终端网络

总线通信 驱动程序和接口 开关 接口集成电路 光电二极管
文件： 总5页 (文件大小：52K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
 查看货源
®
DDR110-xxT7RL  
DOUBLE DATA RATE TERMINATION  
NETWORK WITH DISABLE SWITCH  
ASD™  
IPAD™ Computer  
MAIN APPLICATION  
DDR (double data rate) Termination Network used  
on.  
24  
■
■
■
■
Motherboard  
Workstation  
Server  
1
Notebooks  
12  
DESCRIPTION  
The DDR110 provides 10 bits resistor Network to  
be used for SDR/DDR (double data rate) SDRAM  
bus Termination.  
TSSOP24  
This device has a series resistors (Rs) to reduce  
signal reflection noise. This eliminates the need for  
external terminating resistors.  
The DDR Termination Nerwork is enabled with the  
output Enable pin (OE). When OE is HIGH Inputs  
are connected to Outputs (A connected to B).  
When OE is LOW every inputs are in High  
impedance state (Hi - Z).  
VCC 24  
B0  
1 VSS  
A0  
Rs  
Rs  
Rs  
Rs  
Rs  
Rs  
Rs  
Rs  
Rs  
Rs  
The DDR Termination Network is a bidirectional  
device when the internal switch is ON. When the  
switch is OFF, the device will block current in both  
directions.  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
B8  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
This device is made using ST IPADTM (Integrated  
Passive & Active devices) technology.  
FEATURES AND BENEFITS  
■
■
■
■
■
10 bits Termination Network.  
Integrated Termination resistor (Rs)  
Enable input TTL level compatible  
Impedance matching ± 2% (A0-B0 / An-Bn)  
Optimized  
Termination to Vtt.  
Optimized Low propagation delay  
Low  
Crosstalk  
for  
parallel  
■
B9  
A9  
GATE  
CONTROL  
12 OE  
NC  
May 2001 - Ed: 2  
1/5  
DDR110-xxT7RL  
FUNCTION TABLE  
OE  
B0 - B9  
Function  
High  
Low  
A0 - A9  
Hi - Z  
Connect Termination  
Disconnect Termination  
ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C)  
Value  
Symbol  
Parameter  
Test Conditions  
Tambient = 25°C  
Unit  
Min. Typ. Max.  
VCC  
VIN  
Supply voltage range  
- 0.5  
- 0.5  
5
7
7
V
V
Input voltage range DQ0/7, DM0,  
DQS0  
VTT  
VOE  
IIN  
Termination voltage  
- 0.5  
- 0.5  
7
7
V
V
Termination Enable Voltage range  
Continuous input current  
ESD ratings (input / output YOE)  
Storage temperature  
30  
2
mA  
kV  
°C  
VESD  
TSTG  
HBM MIL STD 883C  
- 65  
150  
RECOMMENDED OPERATING CONDITIONS (Tamb = 25°C)  
Value  
Typ.  
Symbol  
Parameter  
Test Conditions  
Unit  
Min.  
Max.  
VIN  
Input voltage DQ0/7, DM0, DQS0  
OE LOW  
OE HIGH  
0
0
+ 3.3  
+ 2.5  
V
VIH  
VIL  
Output Enable (OE) HIGH voltage Guaranteed logic  
HIGH level  
2
5 (1)  
V
V
Output Enable (OE) LOW voltage  
Guaranteed logic  
LOW level  
0.8  
5.5  
VCC  
VTT  
Supply voltage  
4.5  
5
V
V
Termination voltage  
1.25  
(1) Open collector output with 10k pull-up resistor to 5V is recommended for typical OE signal.  
2/5  
®
DDR110-xxT7RL  
ELECTRICAL CHARACTERISTICS (Tamb = 25°C - Vcc = 5V)  
Value  
Typ.  
Symbol  
Parameter  
Test conditions  
Unit  
Min.  
Max.  
RON  
Switch ON Resistance VTT = 1.25V, VIN = 0V,OE = + 5V  
DDR110-27  
DDR110-56  
22  
45  
27  
56  
32  
67  
Ω
Ω
IOFF  
INPUT Leakage  
current Switch OFF  
INPUT = + 3.3V, OE = 0V  
1
µA  
COFF  
OFF-state capacitance VIN = 0V, 1MHz, 30mVRMS  
OE = 0V  
,
6
pF  
APPLICATION SCHEMATICS  
5V  
Enable  
VTT  
DDR  
110  
System  
Controller  
Chipset  
DDR Address  
DDR Control  
DDR  
110  
10 bits  
DDR  
110  
10 bits  
10 bits  
(North Bridge)  
DDR Data / Strobe  
DDR  
110  
OE  
VCC  
GND  
DQ7  
DQ6  
DM0  
DQ5  
DQ4  
DQ3  
DQ2  
DQS0  
DQ1  
DQ0  
VTT Island  
Decoupling  
Capacitor  
to GND Plane  
OE  
NC  
ENABLEHIGH
3/5  
®
DDR110-xxT7RL  
PIN ASSIGNEMENT  
Assignement for DDR  
Termination  
Assignement for DDR  
Termination  
Pin #  
Pin #  
1
2
3
4
5
6
7
8
9
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
1
2
V
SS = GND  
A0  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
VCC  
B0  
3
A1  
B1  
4
A2  
B2  
5
A3  
B3  
6
A4  
B4  
7
A5  
B5  
8
A6  
B6  
10  
11  
12  
9
A7  
B7  
10  
11  
12  
A8  
B8  
B9  
A9  
Termination enable HIGH  
Not Connected  
OTHER INFORMATION  
DDR1 10 - 27 T7 RL  
Double Data Rate  
Single switch  
Tape & Reel  
10-BIT Wide  
Package code  
T7: TSSOP24  
Rs value in Ω  
27Ω, 56Ω  
4/5  
®
DDR110-xxT7RL  
PACKAGE MECHANICAL DATA  
TSSOP-24  
DIMENSIONS  
Millimeters  
Min. Typ. Max. Min. Typ. Max.  
REF.  
Inches  
E1  
A
1.200  
0.047  
0.006  
A1 0.050  
0.150 0.002  
A2 A  
k
c
A1  
A2 0.800 1.000 1.050 0.031 0.039 0.041  
e
b
L
b
c
0.190  
0.090  
0.300 0.007  
0.200 0.004  
0.012  
0.008  
L1  
D
24  
1
13  
12  
D
E
7.700 7.800 7.900 0.303 0.307 0.311  
6.400 0.252  
E
E1 4.300 4.400 4.500 0.169 0.173 0.177  
e
k
0.65  
0.026  
0°  
8°  
0°  
8°  
L
0.450 0.600 0.750 0.017 0.024 0.029  
L1  
1.000  
0.039  
FOOTPRINT  
0.65mm  
0.30mm  
6.8mm  
4.4mm  
8.00mm  
Type  
Marking  
Package  
Weight  
0.088 g  
0.088 g  
Base qty  
2500  
Delivery mode  
Tape & Reel  
Tape & Reel  
DDR110-27T7RL  
DDR110-56T7RL  
DDR110-27  
DDR110-56  
TSSOP-24  
TSSOP-24  
2500  
■
Epoxy meets UL94 - V0 standard  
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of  
use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by  
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to  
change without notice. This publication supersedes and replaces all information previously supplied.  
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written ap-  
proval of STMicroelectronics.  
The ST logo is a registered trademark of STMicroelectronics  
© 2001 STMicroelectronics - Printed in Italy - All rights reserved.  
STMicroelectronics GROUP OF COMPANIES  
Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia  
Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A.  
http://www.st.com  
5/5  
®

相关型号：

DDR110-56T7RL

 DOUBLE DATA RATE TERMINATION NETWORK WITH DISABLE SWITCH
STMICROELECTR

DDR110-XXT7RL

 DOUBLE DATA RATE TERMINATION NETWORK WITH DISABLE SWITCH
STMICROELECTR

DDR12

 Tracking Dual Output DC-DC Converters
ARTESYN

DDR12

 DC-DC CONVERTERS
EMERSON-NETWO

DDR12-25D08-AJ

 Tracking Dual Output DC-DC Converters
ARTESYN

DDR12-25D08-AJ

 DC-DC CONVERTERS
EMERSON-NETWO

DDR1212DT

 DC-DC Regulated Power Supply Module, 2 Output, 3W, Hybrid, DOUBLE WIDTH, PLASTIC, DIP-24
CRANE

DDR1215DT

 Analog Circuit, Hybrid, MDIP24,
CRANE

DDR144R1

 DIMM SOCKET S.O. DIMM SOCKET DDR SOCKET
ADAM-TECH

DDR144R2

 DIMM SOCKET S.O. DIMM SOCKET DDR SOCKET
ADAM-TECH

DDR144R3

 DIMM SOCKET S.O. DIMM SOCKET DDR SOCKET
ADAM-TECH

DDR144S1

 DIMM SOCKET S.O. DIMM SOCKET DDR SOCKET
ADAM-TECH
©2020 ICPDF网 联系我们和版权申明