Maxim > Products > Analog Switches and Multiplexers > MAX4818, MAX4819

MAX4818, MAX4819

High-Bandwidth T1/E1 Dual-SPDT Switches/4:1 Muxes

Relay Replacement for T1/E1 Redundancy Applications

Overview

Technical Documents

Ordering Info

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Status

All versions are No Longer Available. See Ordering Information for recommended replacements.

Description

The MAX4818/MAX4819 high-bandwidth, low-on-resistance 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 applications. Each MAX4818/MAX4819 replaces four electromechanical relays, significantly reducing board space, simplifying PC board routing, and reducing power consumption. These devices operate with ±3.3V or ±5V dual supplies for applications requiring T1/E1 signal switching in the line side of the interface transformer. 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.

The MAX4818/MAX4819 are available in a tiny 16-pin, 5mm x 5mm, thin QFN package and are specified over the extended -40°C to +85°C temperature range.

Data Sheet

Download	Rev 1	(PDF, 1.3MB)
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Key Features

Dual SPDT and 4:1 Multiplexer Configurations
Dual-Supply Operation from ±3.3V to ±5V
Single-Supply Operation from +6V to +11V
Hot-Insertion Tolerant with No DC Path to the Supplies
Low On-Resistance, R_ON = 4Ω (typ) and 6Ω (max)
Over 350MHz -3dB 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 +85°C Extended Temperature Range
Space-Saving, 16-Pin, 5mm x 5mm Thin QFN
SET Controls All Switches Simultaneously For Redundancy Switching (MAX4819)

Applications/Uses

Add/Drop Multiplexers
Avionics
Base Stations and Base-Station Controllers
Data Acquisition
Digital Loop Carriers
Edge Routers
Industrial Applications
Multi-Service Provisioning Platforms
Multi-Service-Switches (MSSs)
T1/E1 Redundancy Switching
Telecom Signal Switching
Test Equipment

Diagram

Typical Operating Circuit

Product Guides

Signal Routing & Protection (PDF)

Reliability Reports

Request Reliability Report for:

Software/Models

MAX4818 Macromodel

MAX4819 Macromodel

Ordering Information

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Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX4818ETE		N/A	No Longer Available	MAX4670	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4818ETE+		N/A	No Longer Available	MAX4670	TQFN;16 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0073 (PDF) Use pkgcode/variation: T1655+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX4818ETE+T		N/A	No Longer Available	MAX4670	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4818ETE-T		N/A	No Longer Available	MAX4670	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4819ETE		N/A	No Longer Available	MAX4670	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX4819ETE-T		N/A	No Longer Available	MAX4670	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3915 Rev 1; 2007-02-15
This page last modified: 2007-08-29