Overview
The ADG3257BRQZ is a high-speed CMOS bus switch produced by Analog Devices Inc. This device is comprised of four 2:1 multiplexers/demultiplexers with high impedance outputs, manufactured on a CMOS process. This design ensures low power dissipation while maintaining high switching speed and very low on resistance. The ADG3257BRQZ operates from a single 3.3 V or 5 V supply, making it versatile for various applications. It is particularly useful in scenarios where low propagation delay and minimal ground bounce noise are critical.
Key Specifications
| Parameter | Symbol | Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|---|
| Input High Voltage | VINH | V | 2.4 | |||
| Input Low Voltage | VINL | V | -0.3 | 0.8 | ||
| Input Leakage Current | II | 0 ≤ VIN ≤ 5.5 V | μA | ±0.01 | ±1 | |
| Off State Leakage Current | IOZ | 0 ≤ A, B ≤ VCC | μA | ±0.01 | ±1 | |
| On State Leakage Current | IOZ | 0 ≤ A, B ≤ VCC | μA | ±0.01 | ±1 | |
| Maximum Pass Voltage | VP | VIN = VCC = 5 V, IO = −5 μA | V | 3.9 | 4.2 | 4.4 |
| Propagation Delay A to B or B to A | tPD, tPHL, tPLH | VA = 0 V, CL = 50 pF | ns | 0.10 | ||
| On Resistance | RON | VA = 0 V, IO = 48 mA, 15 mA, 8 mA, TA = 25°C | Ω | 2 | 4 | |
| Maximum Data Rate | VA = 2 V p-p, VCC = 5 V ±10% | Mbps | 933 | |||
| Operating Temperature | °C | -40 | 85 | |||
| Supply Voltage | VCC | V | 3.0 | 5.5 |
Key Features
- High-speed operation with 100 ps propagation delay through the switch
- Low on resistance of 2 Ω, allowing inputs to be connected to outputs without additional delay or noise
- Single 3.3 V or 5 V supply operation with level translation capability
- Ultralow quiescent supply current of 1 nA typical
- Switches remain in the off state when power is off, ensuring signal isolation
- Standard 3257 type pinout for compatibility
- Maximum data rate of 933 Mbps typical at VA = 2 V p-p, VCC = 5 V ±10%
- Operating temperature range from -40°C to +85°C
- 16-lead QSOP package
Applications
- Bus switching and bus isolation
- Level translation
- Memory switching and interleaving
Q & A
- What is the ADG3257BRQZ?
The ADG3257BRQZ is a high-speed CMOS bus switch comprised of four 2:1 multiplexers/demultiplexers with high impedance outputs.
- What is the operating voltage range of the ADG3257BRQZ?
The device operates from a single 3.3 V or 5 V supply.
- What is the maximum data rate of the ADG3257BRQZ?
The maximum data rate is 933 Mbps typical at VA = 2 V p-p, VCC = 5 V ±10%.
- What is the on resistance of the ADG3257BRQZ?
The on resistance is 2 Ω.
- What is the quiescent supply current of the ADG3257BRQZ?
The quiescent supply current is 1 nA typical.
- What are the primary applications of the ADG3257BRQZ?
The primary applications include bus switching, bus isolation, level translation, and memory switching/interleaving.
- What is the operating temperature range of the ADG3257BRQZ?
The operating temperature range is from -40°C to +85°C.
- What package type does the ADG3257BRQZ come in?
The device comes in a 16-lead QSOP package.
- Do the switches remain in the off state when power is off?
Yes, the switches remain in the off state when power is off, ensuring signal isolation.
- What is the propagation delay of the ADG3257BRQZ?
The propagation delay is 100 ps.
