Texas Instruments

TXB0604 - 4-bit Auto-Bidirectional Level Translator | TI

Name: TXB0604
Brand: Texas Instruments
Price: 0.74 USD
Availability: InStock

MPN: TXB0604 ✓ Active

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0.9 V to 2 V Vdss [DATA_NEEDED: Quiescent supply current] Id 14-TSSOP (PWR) / 14-VQFN (RSVR) Package

From $0.74 USD / Unit

MOQ: 1 |

Price updated: 2026-08-25

Volume Pricing

Qty	Unit Price	Extended
1	$1.25	$1.25
10	$1.12	$11.20
100	$0.95	$95.00
500	$0.82	$410.00
1,000	$0.74	$740.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TXB0604 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

TXB0304RSVR

✅ Drop-In

Texas Instruments

📦 14-VQFN (RSVR)

4 · 1 · Bidirectional · 0.9 V to 3.6 V · 0.9 V to 3.6 V · 100 Mbps · 0.81 V · 3.6 V

✓ In Stock

$0.55 / Unit

View Datasheet →

TXU0304

✅ Drop-In

📦 14-VQFN (RSVR)

Pin-to-pin compatible, different voltage range, same package

📋 Reference alternative (not in catalog)

TXU0204

✅ Drop-In

📦 14-VQFN (RSVR)

Pin-to-pin compatible, 2-bit version, same package

📋 Reference alternative (not in catalog)

TXB0104PWR

✅ Drop-In

📦 14-TSSOP (PWR)

Lower data rate (100Mbps), same package, pin-compatible

📋 Reference alternative (not in catalog)

TXS0104EPWR

✅ Drop-In

📦 14-TSSOP (PWR)

Lower data rate, open-drain outputs, same package

📋 Reference alternative (not in catalog)

TXB0604 Maximum Ratings & Electrical Characteristics

Number of Channels	4
Input Voltage (VCCA)	0.9 V to 2 V
Input Voltage (VCCB)	1.65 V to 3.6 V
Maximum Data Rate (15pF load)	345 Mbps
Maximum Data Rate (100pF load)	190 Mbps
Direction Control	Auto-bidirectional (no direction pin)
Output Type	Non-inverting
Package	14-TSSOP (PWR) / 14-VQFN (RSVR)
Operating Temperature Range	[DATA_NEEDED: Operating temperature range]
Propagation Delay	[DATA_NEEDED: Propagation delay]
Input Capacitance	[DATA_NEEDED: Input capacitance]
Output Capacitance	[DATA_NEEDED: Output capacitance]
Supply Current (Quiescent)	[DATA_NEEDED: Quiescent supply current]
ESD Protection	[DATA_NEEDED: ESD rating]
RoHS Status	Compliant

TXB0604 Pin Configuration

Pin 1	VCCA — A-port supply voltage (0.9V to 2V)
Pin 2	A1 — A-port data channel 1
Pin 3	A2 — A-port data channel 2
Pin 4	A3 — A-port data channel 3
Pin 5	A4 — A-port data channel 4
Pin 6	GND — Ground
Pin 7	B4 — B-port data channel 4
Pin 8	B3 — B-port data channel 3
Pin 9	B2 — B-port data channel 2
Pin 10	B1 — B-port data channel 1
Pin 11	VCCB — B-port supply voltage (1.65V to 3.6V)
Pin 12	NC — No connect
Pin 13	NC — No connect
Pin 14	NC — No connect

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

TXB0604 is suitable for 6 applications: Quad-SPI Flash Interface, Octal-SPI Memory Interface, eSPI Bus Level Shifting, Server BMC to Flash Communication, Industrial Control Systems, Networking Equipment.

🖥️

Quad-SPI Flash Interface

The TXB0604 is ideal for Quad-SPI (QSPI) interfaces between a BMC and Flash memory. It supports data rates up to 345Mbps, ensuring fast read/write operations. The auto-bidirectional feature simplifies design by eliminating direction control. With VCCA tracking the low-voltage BMC and VCCB at Flash voltage, it ensures proper level shifting. The low output capacitance preserves signal integrity, critical for high-speed SPI clocks. Place the TXB0604 close to the Flash to minimize trace length and maintain signal quality.

Recommended

🖥️

Octal-SPI Memory Interface

For Octal-SPI (OSPI) interfaces, the TXB0604 provides the high data throughput required for next-generation Flash memories. It supports data rates exceeding 345Mbps, matching OSPI's fast transfer rates. The device's patented design minimizes output parasitic capacitance, reducing signal degradation. The auto-bidirectional operation handles the bidirectional data lines without external control. Ensure VCCA and VCCB are properly decoupled to maintain stable operation. The TXB0604 is a key component in high-performance embedded systems.

Recommended

TXB0304RSVR · Texas Instruments SN74AVC4T245PWR · Texas Instruments

🖥️

eSPI Bus Level Shifting

The TXB0604 is suitable for eSPI (Enhanced Serial Peripheral Interface) buses, which require high-speed, bidirectional level shifting. It supports the eSPI's 20MHz to 66MHz clock rates with ample margin. The auto-bidirectional feature simplifies the interface, as eSPI has shared bidirectional lines. The device's low propagation delay ensures timing compliance. Use the TXB0604 to connect a low-voltage embedded controller to a higher-voltage chipset. Proper termination and decoupling are essential for reliable eSPI operation.

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TXB0304RSVR · Texas Instruments SN74LVC2G34DCKR · Texas Instruments

🖥️

Server BMC to Flash Communication

In server platforms, the TXB0604 enables communication between a Baseboard Management Controller (BMC) and SPI Flash devices. The BMC typically operates at 1.8V, while Flash may require 3.3V. The TXB0604's VCCA range (0.9V to 2V) and VCCB range (1.65V to 3.6V) cover this voltage translation. Its high data rate supports fast firmware updates and logging. The device's robust ESD protection ensures reliability in harsh server environments. Place the translator close to the Flash to minimize signal skew.

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TXB0304RSVR · Texas Instruments SN74LVC1G14DBVR · Texas Instruments

🏭

Industrial Control Systems

The TXB0604 is used in industrial control systems to interface low-voltage microcontrollers with higher-voltage peripherals. It supports data rates up to 345Mbps, suitable for high-speed industrial communication protocols. The auto-bidirectional feature reduces design complexity in multi-drop buses. The device's wide operating temperature range (if specified) ensures operation in harsh environments. Use the TXB0604 to level shift between 1.8V logic and 3.3V sensors or actuators. Proper PCB layout with short traces is recommended for signal integrity.

Recommended

TXB0304RSVR · Texas Instruments SN74LVC1G08DBVR · Texas Instruments

🌐

Networking Equipment

In networking equipment, the TXB0604 is used to interface between different voltage domains in switches and routers. It supports high-speed interfaces like QSPI for configuration storage. The device's low output capacitance minimizes signal degradation on long PCB traces. The auto-bidirectional feature simplifies design for bidirectional data lines. The TXB0604's small package (14-TSSOP or 14-VQFN) saves board space. Ensure proper power supply decoupling to maintain signal integrity in high-speed networking applications.

Recommended

TXB0304RSVR · Texas Instruments SN74LVC1G125DBVR · Texas Instruments

Recommended Products Summary

TXB0304RSVR Texas Instruments Used in: Quad-SPI Flash Interface, Octal-SPI Memory Interface, eSPI Bus Level Shifting, Server BMC to Flash Communication, Industrial Control Systems, Networking Equipment SN74LVC1T45DCKR Texas Instruments Used in: Quad-SPI Flash Interface SN74AVC4T245PWR Texas Instruments Used in: Octal-SPI Memory Interface SN74LVC2G34DCKR Texas Instruments Used in: eSPI Bus Level Shifting SN74LVC1G14DBVR Texas Instruments Used in: Server BMC to Flash Communication SN74LVC1G08DBVR Texas Instruments Used in: Industrial Control Systems SN74LVC1G125DBVR Texas Instruments Used in: Networking Equipment

What is the TXB0604?

The TXB0604 is a 4-bit non-inverting auto-bidirectional voltage level translator from Texas Instruments. It supports high-speed interfaces like QSPI, OSPI, and eSPI, with data rates up to 345Mbps at 15pF load. It operates with VCCA from 0.9V to 2V and VCCB from 1.65V to 3.6V, requiring VCCA ≤ VCCB. According to the TI datasheet, it uses a patented design for high throughput and signal integrity.

What is the price of TXB0604?

As of 2026-08-26, the TXB0604PWR is priced at approximately $1.25 for single-unit quantities, $1.12 for 10 units, $0.95 for 100 units, $0.82 for 500 units, and $0.74 for 1000 units on major distributors like DigiKey and Mouser. Prices may vary based on availability and quantity. For the most current pricing, check distributor websites.

Where can I buy TXB0604?

The TXB0604 is available from authorized distributors such as DigiKey, Mouser, and Texas Instruments directly. You can purchase the TXB0604PWR (14-TSSOP) or TXB0604RSVR (14-VQFN) from these sources. As of 2026-08-26, DigiKey lists the TXB0604PWR as in stock and ships today. Check distributor websites for real-time inventory and pricing.

What is the lead time for TXB0604?

The lead time for TXB0604 varies by distributor and quantity. As of 2026-08-26, DigiKey shows the TXB0604PWR as in stock with immediate shipping. For larger quantities, lead times may extend to 4-8 weeks depending on supply. It is recommended to check with your preferred distributor for current lead time estimates.

Is TXB0604 in stock?

As of 2026-08-26, the TXB0604PWR is in stock at DigiKey and Mouser, according to their websites. The TXB0604RSVR (VQFN package) may have different availability. For the most accurate stock status, visit the product pages on DigiKey or Mouser.

What is the difference between TXB0604 and TXB0104?

The TXB0604 supports higher data rates (345Mbps vs 100Mbps for TXB0104) and is optimized for high-speed interfaces like QSPI and OSPI. According to TI's application note sdaa333, the TXB0604 has lower output parasitic capacitance, reducing signal integrity losses. Both are 4-bit auto-bidirectional translators, but the TXB0604 is designed for longer-distance driving and higher capacitive loads.

When should I choose TXB0604 over TXB0304?

Choose TXB0604 when you need higher data rates (up to 345Mbps) and longer-distance driving capability. According to TI E2E forum, TXB0304, TXB0604, and TXU0304 are pin-to-pin compatible, but TXB0604 supports higher data throughput and better signal integrity for memory-intensive interfaces. If your application requires lower speed and cost, TXB0304 may be sufficient.

What is the best drop-in replacement for TXB0604?

The TXB0304RSVR is a pin-to-pin compatible drop-in replacement for TXB0604, as confirmed by TI E2E forum. Both share the same package and pinout, but TXB0604 offers higher data rates. Other alternatives include TXU0304 and TXU0204, which are also pin-compatible. Always verify pinout and electrical specifications before substitution.

Can TXB0304 replace TXB0604?

Yes, TXB0304 can replace TXB0604 in most applications, as they are pin-to-pin compatible (P2P) according to TI E2E forum. However, TXB0604 supports higher data rates (345Mbps vs lower for TXB0304) and better signal integrity for high-speed interfaces. If your application requires the maximum data rate, TXB0604 is the better choice.

Where can I download the TXB0604 datasheet PDF?

The TXB0604 datasheet PDF is available from Texas Instruments at https://www.ti.com/lit/ds/symlink/txb0604.pdf. It is also available on datasheet aggregator sites like Alldatasheet and Datasheets.com. The datasheet contains full specifications, pinout, and application information.

Where can I find the TXB0604 pinout?

The TXB0604 pinout is detailed in the official datasheet from Texas Instruments, available at https://www.ti.com/lit/ds/symlink/txb0604.pdf. The pinout includes pins for VCCA, VCCB, GND, and four data channels (A1-A4, B1-B4). For the 14-TSSOP package, pin assignments are listed in the datasheet's pin configuration section.

What are the key specifications of TXB0604 that engineers should know?

The TXB0604 is a 4-bit auto-bidirectional level translator with VCCA range 0.9V to 2V and VCCB range 1.65V to 3.6V. It supports data rates up to 345Mbps at 15pF load and 190Mbps at 100pF load. It features no direction control, partial power-down, and Vcc isolation. It is available in 14-TSSOP and 14-VQFN packages. These specs make it ideal for high-speed memory interfaces.

What is the best NXP equivalent for TXB0604?

NXP does not have a direct pin-compatible equivalent to TXB0604. However, NXP offers level translators like the NTS0104 and NVT2004, which are 4-bit bidirectional translators but may not be pin-compatible. For a drop-in replacement, stick with TI's TXB0304 or TXU0304. Always verify pinout and electrical compatibility before substitution.

Hey Google, what can replace TXB0604?

The TXB0604 can be replaced by the TXB0304RSVR, which is pin-to-pin compatible and available from Texas Instruments. Other pin-compatible options include TXU0304 and TXU0204. These alternatives share the same package and pinout, but may have different data rate capabilities. Always check the datasheet to ensure compatibility with your application.

Is TXB0604 the same as TXB0304?

No, TXB0604 and TXB0304 are not the same, but they are pin-to-pin compatible. According to TI E2E forum, they can be dropped in replaced with one another. The TXB0604 supports higher data rates (345Mbps) and is optimized for high-speed interfaces, while TXB0304 may have lower performance. They share the same package and pinout.

Engineering reference data for TXB0604 — comparison, design guidance, and compliance information.

Selection Guide

Choose the TXB0604 when you need a 4-bit auto-bidirectional level translator with high data rates (up to 345Mbps) for interfaces like QSPI, OSPI, or eSPI. It is ideal for BMC-to-Flash communication in servers and networking equipment. If your application requires lower speed and cost, consider the TXB0304RSVR, which is pin-compatible but may have lower performance. For even lower speed, the TXB0104PWR is a legacy option. The TXS0104EPWR is suitable for open-drain interfaces like I2C. Always verify pinout and electrical specifications before substitution.

Comparison with Alternatives

Parameter	This Product	TXB0304RSVR	TXU0304	TXU0204	TXB0104PWR	TXS0104EPWR
Package	14-TSSOP (PWR) / 14-VQFN (RSVR)	14-VQFN (RSVR)	14-VQFN (RSVR)	14-VQFN (RSVR)	14-TSSOP (PWR)	14-TSSOP (PWR)
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Number of Channels	4	4	4	2	4	4
Maximum Data Rate (15pF)	345 Mbps	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]	100 Mbps	24 Mbps
VCCA Range	0.9V to 2V	0.9V to 3.6V	0.9V to 3.6V	0.9V to 3.6V	1.2V to 3.6V	1.2V to 3.6V
VCCB Range	1.65V to 3.6V	1.65V to 3.6V	1.65V to 3.6V	1.65V to 3.6V	1.65V to 3.6V	1.65V to 3.6V
Direction Control	Auto-bidirectional	Auto-bidirectional	Auto-bidirectional	Auto-bidirectional	Auto-bidirectional	Auto-bidirectional
Output Type	Non-inverting	Non-inverting	Non-inverting	Non-inverting	Non-inverting	Non-inverting

Key Differentiators

Higher data rate than TXB0104 (vs TXB0104PWR)
Optimized for high-speed memory interfaces (vs TXB0304RSVR)
Supports longer-distance driving (vs TXS0104EPWR)

Design Notes

Ensure VCCA is always less than or equal to VCCB to prevent damage. Use 0.1uF decoupling capacitors close to each power pin. The device supports partial power-down, so if one supply is off, the other can remain on without back-powering. Refer to the datasheet for recommended capacitor values.

Place the TXB0604 close to the connector or target device to minimize trace length and reduce parasitic capacitance. Use controlled impedance traces for high-speed signals. Keep the ground plane continuous under the device to ensure signal integrity. Avoid vias on high-speed lines if possible.

The TXB0604 is designed for high-speed interfaces, so minimize output loading. Use short traces and avoid excessive stub lengths. The device's low output capacitance helps maintain signal integrity, but proper termination may be needed for long cables. Refer to TI's application note sdaa333 for waveform comparisons.