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MAX4818 - High-Bandwidth T1/E1 Dual-SPDT Switches/4:1 Muxes

General 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.

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, RON = 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 Con.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com 19-3915; Rev 1; 1/07 High-Bandwidth T1/E1 Dual-SPDT Switches/ 4:1 Muxes General 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.