Overview
The ADG3257BRQZ-REEL7, produced by Analog Devices Inc., is a high-speed CMOS bus switch that comprises four 2:1 multiplexers/demultiplexers with high impedance outputs. This device is manufactured using a CMOS process, which ensures low power dissipation while maintaining high switching speeds and very low on-resistance. The ADG3257 operates from a single 3.3 V or 5 V supply, making it versatile for various applications. The switches are bidirectional when on and remain in the off state when the power supply is off, providing signal isolation between Port A and Port B.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input High Voltage | VINH | 2.4 | V | |||
| Input Low Voltage | VINL | -0.3 | 0.8 | V | ||
| Input Leakage Current | II | 0 ≤ VIN ≤ 5.5 V | ±0.01 | ±1 | μA | |
| Off State Leakage Current | IOZ | 0 ≤ A, B ≤ VCC | ±0.01 | ±1 | μA | |
| On State Leakage Current | IOZ | 0 ≤ A, B ≤ VCC | ±0.01 | ±1 | μA | |
| Maximum Pass Voltage (VCC = 5 V) | VP | VIN = VCC = 5 V, IO = -5 μA | 3.9 | 4.2 | 4.4 | V |
| Maximum Pass Voltage (VCC = 3.3 V) | VP | VIN = VCC = 3.3 V, IO = -5 μA | 2.3 | 2.6 | 2.8 | V |
| Propagation Delay | tPD | VA = 0 V, CL = 50 pF | 0.10 | ns | ||
| Bus Enable Time | tPZH, tPZL | CL = 50 pF, RL = 500 Ω | 1 | 5.5 | 9 | ns |
Key Features
- High-speed CMOS bus switch with four 2:1 multiplexers/demultiplexers.
- High impedance outputs and low on-resistance.
- Operates from a single 3.3 V or 5 V supply.
- Bidirectional switches when on, and off-state signal isolation.
- Low power dissipation and high switching speeds.
- Available in a 16-lead QSOP package, which is RoHS compliant.
Applications
- Bus switching and isolation.
- Level translation.
- Memory switching and interleaving.
- Automotive interfaces (e.g., CAN, audio, Ethernet).
- Industrial I/O and IO-Link applications.
- Signal integrity and signal line protection.
Q & A
- What is the ADG3257BRQZ-REEL7 used for? The ADG3257BRQZ-REEL7 is used for high-speed bus switching, isolation, level translation, and memory switching/interleaving.
- What is the operating voltage range of the ADG3257? The ADG3257 operates from a single 3.3 V or 5 V supply.
- What is the propagation delay of the ADG3257? The propagation delay is typically 0.10 ns with a load capacitance of 50 pF.
- What package type is the ADG3257 available in? The ADG3257 is available in a 16-lead QSOP package.
- Is the ADG3257 RoHS compliant? Yes, the ADG3257 in the QSOP package is RoHS compliant.
- What are the maximum pass voltages for the ADG3257? The maximum pass voltages are 3.9 V to 4.4 V for VCC = 5 V and 2.3 V to 2.8 V for VCC = 3.3 V.
- What is the operating temperature range of the ADG3257? The operating temperature range is -40°C to +85°C for the industrial (B Version).
- What is the storage temperature range of the ADG3257? The storage temperature range is -65°C to +150°C.
- How many multiplexers/demultiplexers does the ADG3257 contain? The ADG3257 contains four 2:1 multiplexers/demultiplexers.
- Are the switches bidirectional? Yes, the switches are bidirectional when on.
