ADG3249BRJZ-REEL7

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG3249BRJZ-REEL7 is a high-performance 2:1 multiplexer/demultiplexer bus switch operating from a 2.3 V to 3.6 V supply. It features a propagation delay of 225 ps and an on-resistance of 4.5 Ω. The device supports data rates up to 1.244 Gbps with a small signal bandwidth of 610 MHz. It provides selectable level shifting for 3.3 V to 2.5 V, 3.3 V to 1.8 V, and 2.5 V to 1.8 V translations via the SEL pin. Quiescent current is typically 1 µA.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-low propagation delay of 225 ps through the switch.
• Selectable voltage level translation between 3.3 V, 2.5 V, and 1. Break-before-make switching action prevents momentary shorting during channel transitions.
• Compact 8-lead SOT-23 package design.

Analog Switches, Multiplexers, Demultiplexers Applications

• Voltage translation between 3.3 V and 1.8 V logic domains.
• Voltage translation between 3.3 V and 2.5 V logic domains.
• Memory bank switching in systems with common bus signals.
• Docking station interface circuits requiring low capacitance.
• Analog switching applications such as video graphics.

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify that the ordering suffix REEL7 corresponds to the specific reel packaging configuration required for automated assembly processes. Confirm that the B version temperature range of -40°C to +85°C meets the operational environmental requirements of the target application. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS process.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when minimal propagation delay and low on-resistance are critical for high-speed digital interfaces. The integrated SEL pin allows flexible level translation without external components, simplifying board layout. Consider the 8.5 pF on-capacitance for signal integrity analysis in high-frequency designs. Verify that the input voltage levels remain within the specified limits for the chosen supply voltage.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG3249 belongs to Analog Devices' family of high-speed bus switches designed for mixed-voltage system interfacing. It utilizes a low-voltage CMOS process to achieve high switching speeds while maintaining low power dissipation. The device serves as a bridge between different logic families, enabling efficient communication between microprocessors, ADCs, and memory devices operating at varying supply voltages.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Public confirmed substitutes include the ADG3246BRUZ, which offers similar bus switching functionality but in a TSSOP-24 package with different pin counts. Designers should verify pin compatibility and electrical specifications before substitution. No direct pin-for-pin replacements in the same SOT-23-8 package are explicitly confirmed in the provided documentation.