ADG3249:  2.5 V/3.3 V, 2:1 Multiplexer/Demultiplexer Bus Switch

The ADG3249 is a 2.5 V or 3.3 V, high performance 2:1 multiplexer/demultiplexer bus switch. It is designed on a low voltage CMOS process, which provides low power dissipation yet gives high ...More

ADG3249:  2.5 V/3.3 V, 2:1 Multiplexer/Demultiplexer Bus Switch

Product Description

The ADG3249 is a 2.5 V or 3.3 V, high performance 2:1 multiplexer/demultiplexer bus switch. It is designed on a low voltage CMOS process, which provides low power dissipation yet gives high switching speed and very low on resistance. This allows the input to be connected to the output without additional propagation delay or generating additional ground bounce noise. Each switch of the ADG3249 conducts equally well in both directions when on. The ADG3249 exhibits break-before-make switching action, preventing momentary shorting when switching channels.

This device is ideal for applications requiring level translation. When operated from a 3.3 V supply, level translation from 3.3 V inputs to 2.5 V outputs is allowed. Similarly, if the device is operated from 2.5 V supply and 2.5 V inputs are applied, the device will translate the outputs to 1.8 V. In addition, a level translating pin (SEL) is included. When SEL is low, VCC is reduced internally, allowing for level translating between 3.3 V inputs and 1.8 V outputs.

The AD3249 is available in a tiny 8-lead SOT-23 package.

Features

  • 225 ps Propagation Delay through the Switch
  • 4.5 Ω Switch Connection between Ports
  • Data Rate 1.244 Gbps
  • 2.5 V/3.3 V Supply Operation
  • Selectable Level Shifting/Translation
  • Level Translation
    - 3.3 V to 2.5 V
    - 3.3 V to 1.8 V
    - 2.5 V to 1.8 V
  • Small Signal Bandwidth 610 MHz
  • 8-Lead SOT-23 Package

Diagrams

ADG3249 Diagram
Functional Block Diagram for ADG3249

Specifications

Data Rate (typ) 1.244Gbps
t Prop Delay (typ) 225ps
Bus Enable Time (typ) n/a
VCC 1 (V) 2.5 - 1.8,3.3 - 1.8,3.3 - 2.5
ICC2 (Max) n/a
Pkg SOT-23
Temp Range (°C) -40 to 85
Vcc 2 (V) n/a
Bus Width 2:1 Mux

Explore Other Products

Part# Data Rate (typ) t Prop Delay (typ) Bus Enable Time (typ) VCC 1 (V) Vcc 2 (V) ICC1 (Max) ICC2 (Max) Pkg Least # Pins Temp Range (°C) Product Description Price* (1000-4999)
ADG3123 100kbps 80ns n/a Single(+25 to +30) -5V to -10V 151µA 1µA TSSOP 20 -40 to 85 8-Channel, CMOS-Logic-to-High-Voltage Level Translator $2.33
ADG3231 30Mbps 4ns n/a Single(+1.65 to +3.6) 1.65V - 3.6V 2µA 2µA SOT-23 6 -40 to 85 Single-Channel Level Translator with Bi-directional 1.65 V to 3.6 V Level Shift $0.43
ADG3232 30Mbps 3.5ns 4ns Single(+1.65 to +3.6) 1.65V - 3.6V 2µA 2µA SOT-23 8 -40 to 85 2:1 Multiplexer Level Translator with Bi-directional 1.65 V to 3.6 V Level Shift $0.53
ADG3233 30Mbps 3.5ns 4ns Single(+1.65 to +3.6) 1.65V - 3.6V 2µA 2µA MSOP, SOT-23 8 -40 to 85 Low Voltage 1.65 V to 3.6 V, (Up/Down) Logic Level Translation, Bypass Switch $0.57
ADG3300 50Mbps 5ns 1µs 1.15 - 5.5 1.65V - 5.5V 5µA 5µA TSSOP 20 -40 to 85 Low Voltage, 1.15 V to 5.5 V, 8-Channel Bidirectional Logic Level Translator $1.62
ADG3301 50Mbps 6ns 1µs 1.15 - 5.5 1.65V - 5.5V 1µA 1µA SC70 6 -40 to 85 Low Voltage 1.15 V to 5.5 V, Single-Channel Bidirectional Logic Level Translator $0.47
ADG3308 60Mbps 5ns 1µs 1.15 - 5.5 1.65V - 5.5V 1µA 1µA CSP, TSSOP 20 -40 to 85 Low Voltage 1.15 V to 5.5 V, 8-Channel, Bidirectional, Logic Level Translator $1.62
ADG3304 60Mbps 5ns 1µs 1.15 - 5.5 1.65V - 5.5V 1µA 1µA CSP, TSSOP 14 -40 to 85 Low Voltage 1.15 V to 5.5 V, 4 Channel, Bidirectional, Logic Level Translator $0.97
ADG3257 933Mbps 100ps 5ns 5-3 n/a 1µA n/a QSOP 16 -40 to 85 High Speed, 3.3 V/5 V Quad 2:1 Mux/Demux (4-Bit, 1 of 2) Bus Switch $0.60
ADG3245 1244Mbps 225ps 3.2ns 2.5 - 1.8, 3.3 - 1.8, 3.3 - 2.5, Single(+2.3 to +3.6) n/a 1µA n/a CSP, TSSOP 20 -40 to 85 2.5 V/3.3 V, 8 Bit, 2 Port Level Translator, Bus Switch $0.72
ADG3246 1244Mbps 225ps 3.2ns 2.5 - 1.8, 3.3 - 1.8, 3.3 - 2.5 n/a 1µA n/a CSP, TSSOP 24 -40 to 85 2.5 V/3.3 V, 10 Bit, 2 Port Level Translator, Bus Switch $0.75
ADG3247 1244Mbps 225ps 3.2ns 2.5 - 1.8, 3.3 - 1.8, 3.3 - 2.5 n/a 1µA n/a CSP, TSSOP 40 -40 to 85 2.5 V/3.3 V, 16 Bit (Dual 8 Bit) , 2 Port Level Translator, Bus Switch $0.99
ADG3248 1.244Gbps 225ps n/a 2.5 - 1.8, 3.3 - 2.5 n/a 1µA n/a SC70 6 -40 to 85 2.5 V/3.3 V, 2:1 Multiplexer/Demultiplexer Bus Switch in SC70 $0.57
ADG3249 1.244Gbps 225ps n/a 2.5 - 1.8, 3.3 - 1.8, 3.3 - 2.5 n/a 0.2mA n/a SOT-23 8 -40 to 85