# BCT4321NETB-TR - BROADCHIP Analog Switch IC

## Product Summary

The BCT4321NETB-TR from BROADCHIP is a double-pole double-throw (DPDT) analog switch designed for multiplexing USB2.0 and audio signals. It features a -3dB bandwidth of 720MHz in USB mode and low on-resistance.

## Product Information

| Field | Value |
| --- | --- |
| Part Number | BCT4321NETB-TR |
| Manufacturer | BROADCHIP |
| Product Type | Analog Switch IC |
| Category | Uncategorized |
| Subcategory | DPDT Analog Switch |
| Package | QFN1.4X1.8-10 |

## Description

The BROADCHIP BCT4321NETB-TR is a versatile DPDT analog switch capable of handling USB2.0 Hi-Speed data and negative signal audio analog signals. It offers a wide -3dB bandwidth of 720MHz in USB mode, ensuring good signal integrity for high-speed differential signals. The switch also features ultra-low on-resistance, measuring 2.5 ohms at 3.6V in Audio Mode and 8.5 ohms at 3.6V in USB Mode.

With an operating voltage range of 2.7V to 5.0V, the BCT4321NETB-TR provides flexibility in design. It boasts excellent channel-to-channel crosstalk rejection of 86dB at 1MHz and off-isolation of 66dB at 1MHz, minimizing noise interference. The device includes audio channel shunt resistors for pop and click noise reduction and power-off protection on common D+/R and D-/L ports.

This analog switch is available in a compact QFN1.4X1.8-10 package, making it suitable for space-constrained applications. It operates within an ambient temperature range of -40°C to +85°C. Applications include cell phones, Hi-Fi audio switching, and USB 2.0 high-speed data switching.

## Key Specifications

| Specification | Value |
| --- | --- |
| Propagation Delay | <250 ps |
| SVHC Present | Not Present |
| Tape & Reel | Yes |
| Voltage | 2.7 V to 5 V |

## Availability and Pricing

| Field | Value |
| --- | --- |
| Stock Status | In Stock |
| Distributor Count | 1 |
| Total Stock | 1,236 |
| Price | $1.17 |
| Pricing Available | Yes |

## Estimated Pricing

| Quantity | Price Range |
| ---: | ---: |
| 1+ | $1.17 |

Estimated pricing is for guidance only and is not a live distributor offer.

## Distributor Offers

| Distributor | Stock | Unit Price | MOQ | Lead Time | Last Updated |
| --- | --- | --- | --- | --- | --- |
| Xingangxin | 1,236 |  |  |  |  |

## Features

- DPDT analog switch for USB and audio.
- 720MHz bandwidth in USB mode.
- Low 2.5-ohm on-resistance in audio mode.
- Operates from 2.7V to 5.0V supply.
- Compact QFN-10 package.

## Applications

- Ideal for cell phone audio switching.
- Suitable for Hi-Fi audio applications.
- Used for USB 2.0 high-speed data.
- Supports USB 3.x Type C switching.

## Compliance

| Field | Value |
| --- | --- |
| RoHS Status | RoHS3 Compliant |
| REACH Status | REACH Unaffected |
| Moisture Sensitivity Level | 1 Unlimited |
| SVHC Present | Not Present |

## Documents and Media

- Product Page: https://distyparts.com/product/bct4321netb-tr
- RFQ URL: https://distyparts.com/product/bct4321netb-tr#rfq

## FAQs

### What is the operating supply voltage of the BCT4321NETB-TR?

The operating supply voltage range is 2.7V to 5.0V.

### What package is the BCT4321NETB-TR available in?

It is available in a QFN1.4X1.8-10 package.

### What is the -3dB bandwidth in USB mode?

The -3dB bandwidth is 720MHz in USB mode.

### What are the on-resistance values in audio and USB modes?

Typical on-resistance is 2.5 ohms in audio mode and 8.5 ohms in USB mode at VCC=3.6V.

### What is the off isolation and crosstalk rejection at 1MHz?

Off isolation is 66dB and crosstalk rejection is 86dB at 1MHz.

### What is the maximum propagation delay?

Propagation delay is less than 250ps.

### What are the analog signal ranges for audio and USB modes?

In audio mode, the analog signal range is VCC-6.5V to VCC-2; in USB mode, it is 0V to VCC.

## Related Pages

- Manufacturer: https://distyparts.com/manufacturer/broadchip-2
- Category: https://distyparts.com/category/uncategorized/new-products
- Product Page: https://distyparts.com/product/bct4321netb-tr
- Markdown File: https://distyparts.com/product/bct4321netb-tr.md
- TXT File: https://distyparts.com/product/bct4321netb-tr.txt