• 简体中文
• English

MAX9390：Anything-to-LVDS Dual 2 x 2 Crosspoint Switches

Dual, 2 x 2 Crosspoint Switches with Anything-to-LVDS Guarantee 1.50GHz Maximum Operating Frequency

The MAX9390/MAX9391 dual 2 x 2 crosspoint switches perform high-speed, low-power, and low-noise signal distribution. The MAX9390/MAX9391 multiplex one of two differential input pairs to either or both low-voltage differential signaling (LVDS) outputs for each channel. Independent enable inputs turn on or turn off each differential output pair. Four LVCMOS/LVTTL logic inputs (two per channel) control the internal connections between inputs and outputs. This flexibility allows for the following configurations: 2 x 2 crosspoint switch, 2:1 mux, 1:2 splitter, or dual repeater. This makes the MAX9390/MAX9391 ideal for protection switching in fault-tolerant systems, loopback switching for diagnostics, fanout buffering for clock/data distribution, and signal regeneration. Fail-safe circuitry forces the outputs to a differential low condition for undriven inputs or when the common-mode voltage exceeds the specified range. The MAX9390 provides high-level input fail-safe detection for LVDS, HSTL, and other GND-referenced differential inputs. The MAX9391 provides low-level input fail-safe detection for LVPECL, CML, and other VCC-referenced differential inputs. Ultra-low 82ps(P-P) (max) pseudorandom bit sequence (PRBS) jitter ensures reliable communications in high-speed links that are highly sensitive to timing error, especially those incorporating clock-and-data recovery, or serializers and deserializers. The high-speed switching performance guarantees 1.5GHz operation and less than 65ps (max) skew between channels. LVDS inputs and outputs are compatible with the TIA/EIA-644 LVDS standard. The LVDS outputs drive 100Ω loads. The MAX9390/MAX9391 are offered in a 32-pin TQFP package and operate over the extended temperature range (-40°C to +85°C). Also refer to the MAX9392/MAX9393 with flow-through pinout.

Key Features 1.5GHz Operation with 250mV Differential Output Swing 2ps(RMS) (max) Random Jitter AC Specifications Guaranteed for 150mV Differential Input Signal Inputs Accept Any Differential Signaling Standard LVDS Outputs for Clock or High-Speed Data High-Level Input Fail-Safe Detection (MAX9390) Low-Level Input Fail-Safe Detection (MAX9391) 3.0V to 3.6V Supply Voltage Range LVCMOS/LVTTL Logic Inputs Control Signal Routing

MAX9390, MAX9391: Typical Operating Circuit Applications/Uses Central Office Backplane Clock Distribution DSLAM Fault-Tolerant Systems High-Speed Telecom/Datacom Equipment Protection Switching

DataSheet

Parametrics

Design kits & evaluation modules

• MAX9390EVKIT

Quality and Environmental Data

• MAX9390.pdf

Ordering Information