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MAX4818

更新时间： 2024-11-15 04:41:55
品牌 Logo 应用领域
美信 - MAXIM 复用器开关光电二极管
页数 文件大小 规格书
21页 1350K
描述
High-Bandwidth T1/E1 Dual-SPDT Switches/4:1 Muxes

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MAX4818 数据手册

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19-3915; Rev 1; 1/07  
High-Bandwidth T1/E1 Dual-SPDT Switches/  
4:1 Muxes  
General Description  
Features  
♦ Dual SPDT and 4:1 Multiplexer Configurations  
♦ Dual-Supply Operation from ±±3±ꢀ to ±ꢁꢀ  
♦ Single-Supply Operation from +6ꢀ to +11ꢀ  
The MAX4818/MAX4819 high-bandwidth, low-on-resis-  
tance analog dual SPDT switches/4:1 multiplexers are  
designed to serve as integrated T1/E1 protection  
switches for 1+1 and N+1 line-card redundancy appli-  
cations. Each MAX4818/MAX4819 replaces four  
electromechanical relays, significantly reducing board  
space, simplifying PC board routing, and reducing  
power consumption. These devices operate with ±±.±3  
or ±ꢀ3 dual supplies for applications reꢁuiring T1/E1  
signal switching in the line side of the interface trans-  
former. Internal voltage multipliers drive the analog  
switches, yielding excellent linearity and low 4Ω typical  
on-resistance within the T1/E1 analog signal range. This  
high-bandwidth family of products is optimized for low  
return loss and matched pulse template performance in  
T1/E1 long-haul and short-haul applications.  
♦ Hot-Insertion Tolerant with No DC Path to the  
Supplies  
♦ Low On-Resistance, R  
= 4Ω (typ) and 6Ω (max)  
ON  
♦ Over ±ꢁ0MHz -±dB Signal Bandwidth (MAX4818)  
♦ Excellent Crosstalk and Off-Isolation Performance  
Over the T1/E1 Signal Spectrum: Over 110dB  
Crosstalk Attenuation at 1MHz (MAX4818)  
♦ Low Current Consumption of 2mA (max)  
♦ -40°C to +8ꢁ°C Extended Temperature Range  
♦ Space-Saving, 16-Pin, ꢁmm x ꢁmm Thin QFN  
The MAX4818/MAX4819 are available in a tiny 16-pin,  
ꢀmm x ꢀmm, thin QFN package and are specified over  
the extended -40°C to +8ꢀ°C temperature range.  
♦ SET Controls All Switches Simultaneously For  
Applications  
Redundancy Switching (MAX4819)  
T1/E1 Redundancy Switching  
Base Stations and Base-Station Controllers  
Add and Drop Multiplexers  
Multi-Service Provisioning Platforms  
Edge Routers  
Pin Configurations  
TOP VIEW  
12  
11  
10  
9
COM1  
IN1  
Multi-Service-Switches (MSSs)  
Digital Loop Carriers  
13  
14  
15  
16  
8
7
6
5
COM2  
IN2  
MAX4818  
Industrial Applications  
Data Acꢁuisition  
SET  
EN  
+
1
*EP  
N.C.  
N.C.  
Telecom Signal Switching  
Test Eꢁuipment  
2
3
4
Avionics  
THIN QFN (ꢁmm x ꢁmm)  
*EXPOSED PADDLE CONNECTED TO ꢀ-  
Pin Configurations continued at end of data sheet.  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +8ꢀ°C  
-40°C to +8ꢀ°C  
PIN-PACKAGE  
16 TQFN-EP*  
16 TQFN-EP*  
CONFIGURATION  
2 x SPDT  
PACKAGE CODE  
T16ꢀꢀ-±  
MAX4818ETE+  
MAX4819ETE+  
4:1 MUX  
T16ꢀꢀ-±  
*EP = Exposed Paddle  
Devices are available in lead-free packages.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...21

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