SN74CB3Q3257DBQR
Interface ICs
Technical Specifications
| Type | Description |
|---|---|
| Ron | 4Ohm |
| Con | 10.5pF |
| Supply Voltage | 2.3V~3.6V |
| Channels | 4 |
| Type | Description |
|---|---|
| Operating Temperature | -40°C~+85°C |
| Tpd Ns | 200 ns |
| Function | Bidirectional analog channel;Power-off isolation |
| Package / Case | SSOP-16-4.4mm |
Product Introduction
The SN74CB3Q3257 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (rₒₙ). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q3257 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.
The SN74CB3Q3257 is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer with a single output-enable (OE̅) input. The select (S) input controls the data path of the multiplexer/demultiplexer. When OE̅ is low, the multiplexer/demultiplexer is enabled and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the multiplexer/demultiplexer is disabled and a high-impedance state exists between the A and B ports.
This device is fully specified for partial-power-down applications using Iₒₕ. The Iₒff circuitry prevents damaging current backflow through the device when it is powered down. The device has isolation during power off.
To ensure the high-impedance state during power up or power down, OE̅ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Features
- High-Bandwidth Data Path (up to 500 MHz)
- 5-V Tolerant I/Os With Device Powered Up or Powered Down
- Low and Flat ON-State Resistance (rₒₙ) Characteristics Over Operating Range (rₒₙ = 4 Ω Typ)
- Rail-to-Rail Switching on Data I/O Ports
- d- to 5-V Switching With 3.3-V VCC
- d- to 3.3-V Switching With 3.5 V VCC
- Bidirectional Data Flow With Near-Zero Propagation Delay
- Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cᵢₒ₍ₒₚₚ₎ = 3.5 pF Typ)
- Fast Switching Frequency (fₒₑ = 20 MHz Max)
- Data and Control Inputs Provide Undershoot Clamp Diodes
- Low Power Consumption (Icc = 0.7 mA Typ)
- VCC Operating Range From 2.3 V to 3.6 V
- Data I/Os Support 0- to 5-V Signaling Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
- Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
- Iₒff Supports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Performance Tested Per JESD 22
- 2000-V Human-Body Model (A114-B, Class II)
- 1000-V Charged-Device Model (C101)
- Supports Both Digital and Analog Applications: USB Interface, Differential Signal Interface, Bus Isolation, Low-Distortion Signal Gating
Applications
- broadband communications
- networking
- data-intensive computing systems
Datasheet
Alternative Parts
Common SN74CB3Q3257DBQR alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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