TXS0108EQPWRQ1 - 8-Bit Auto-Direction Level Shifter | TI
MPN: TXS0108EQPWRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.55 | $0.55 |
| 10 | $0.5 | $5.00 |
| 100 | $0.42 | $42.00 |
| 500 | $0.4 | $200.00 |
| 1,000 | $0.39 | $390.00 |
Drop-in alternatives for TXS0108EQPWRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TXS0108EPWR
β Drop-Inβ In Stock
$0.58 / Unit
View Datasheet βTXB0108QPWRQ1
β‘ Same Packageβ In Stock
$0.68 / Unit
View Datasheet βTXB0108PWR
β‘ Same Packageβ In Stock
$0.18 / Unit
View Datasheet βNXB0108PW
β‘ Same Packageπ Reference alternative (not in catalog)
SN74LVC8T245PWR
β‘ Same Packageβ In Stock
$0.47 / Unit
View Datasheet βTXS0108EQPWRQ1 Maximum Ratings & Electrical Characteristics
| Bits / Channels | 8 bidirectional channels |
| Translator Type | Auto-direction voltage level translator (open-drain and push-pull) |
| VCCA Supply Range | 1.2 V to 3.6 V |
| VCCB Supply Range | 1.65 V to 5.5 V |
| Max Data Rate (Push-Pull) | 110 Mbps |
| Max Data Rate (Open-Drain) | 2 Mbps |
| Direction Control | Not required (auto-direction sensing) |
| Output Type | 3-state with OE pin |
| Package | TSSOP-20 (PW) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (AEC-Q100 grade 1) |
| Automotive Qualification | AEC-Q100 qualified |
| ESD HBM Classification | Level 2 |
| ESD CDM Classification | Level C6 |
| RoHS Status | Compliant |
| Quiescent Current | [DATA_NEEDED: Icc typical] |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
TXS0108EQPWRQ1 Pin Configuration
| Pin 1 | A1 β A-side data 1 |
| Pin 2 | A2 β A-side data 2 |
| Pin 3 | A3 β A-side data 3 |
| Pin 4 | A4 β A-side data 4 |
| Pin 5 | GND β Ground |
| Pin 6 | A5 β A-side data 5 |
| Pin 7 | A6 β A-side data 6 |
| Pin 8 | A7 β A-side data 7 |
| Pin 9 | A8 β A-side data 8 |
| Pin 10 | NC β No connect |
| Pin 11 | B8 β B-side data 8 |
| Pin 12 | B7 β B-side data 7 |
| Pin 13 | B6 β B-side data 6 |
| Pin 14 | B5 β B-side data 5 |
| Pin 16 | B4 β B-side data 4 |
| Pin 17 | B3 β B-side data 3 |
| Pin 18 | B2 β B-side data 2 |
| Pin 19 | B1 β B-side data 1 |
| Pin 20 | OE β Output enable; low = 3-state all I/O |
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
TXS0108EQPWRQ1 is suitable for 6 applications: Automotive Body Control Module I/O, I2C / Open-Drain Bus Level Shifting, Infotainment and Display Digital Interfaces, Portable / Battery-Powered Electronics, Industrial Sensor and Logic Interfacing, Networking and Communication Equipment.
Automotive Body Control Module I/O
The TXS0108EQPWRQ1 is AEC-Q100 grade 1 qualified (-40C to +125C) with HBM ESD level 2 and CDM C6 classification, making it well suited for automotive BCM signal translation between low-voltage MCUs and 5V sensor or actuator logic. Its auto-direction sensing removes firmware overhead for bidirectional lines, and the OE pin safely isolates I/O during power sequencing. Placed between a 3.3V MCU bank and a 5V chassis-logic domain, all eight channels translate independently at push-pull rates up to 110 Mbps.
Recommended
I2C / Open-Drain Bus Level Shifting
The integrated 10 kOhm pull-up resistors and open-drain-tolerant architecture allow the TXS0108E to shift I2C and similar open-drain buses between 1.8V/3.3V and 5V domains at up to 2 Mbps, covering I2C standard and fast modes. Because each channel is auto-directional, SDA re-configuration happens without a direction pin. Designers should verify bus capacitance, since the 10 kOhm pull-ups limit fast-mode-plus performance on heavy loads; lower-value external pull-ups at the B-side can restore edge rates.
Recommended
Infotainment and Display Digital Interfaces
In automotive infotainment head units and cluster displays, low-voltage SoCs (1.8V or 2.5V I/O) must communicate with 3.3V/5V peripherals such as touch controllers, EEPROM, and backlight control logic. The TXS0108EQPWRQ1 bridges these domains on eight channels with 110 Mbps push-pull capability, sufficient for SPI and parallel control buses. The TSSOP-20 package simplifies routing on dense boards, and AEC-Q100 grade 1 qualification supports the elevated cabin temperature environment.
Recommended
Portable / Battery-Powered Electronics
Battery-powered designs commonly mix 1.8V flash/memory or SoC I/O with 3.3V or 5V peripherals. The TXS0108EQPWRQ1 accepts VCCA as low as 1.2V, accommodating exhausted-battery low-voltage rails, while translating cleanly to 5V domains. Its 3-state OE control lets a system manager float all eight lines during standby, minimizing leakage. Auto-direction operation saves microcontroller GPIO pins otherwise consumed by direction control on partially bidirectional buses.
Recommended
Industrial Sensor and Logic Interfacing
Industrial control boards frequently pair 3.3V microcontrollers with legacy 5V sensor and logic subsystems. The TXS0108EQPWRQ1 translates eight such signals with automatic direction detection, easing migration of 5V-centric designs to modern MCUs. Push-pull rates up to 110 Mbps cover SPI, UART, and parallel handshake buses. Designers should avoid using it on lines that must sink heavy loads, since its 4 kOhm series element and pull-ups limit output drive strength.
Recommended
Networking and Communication Equipment
Routers, switches, and line cards use the TXS0108EQPWRQ1 to bridge 1.8V PHY or ASIC management I/O to 3.3V/5V EEPROM, LED drivers, and supervisory logic. The 110 Mbps push-pull rating supports MDIO at high clock rates and other management buses, while auto-direction handling suits shared read/write lines. The OE pin supports clean bring-up sequencing when management rails power in different orders across a backplane.
Recommended
Recommended Products Summary
Engineering reference data for TXS0108EQPWRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TXS0108EPWR | TXB0108QPWRQ1 | NXB0108PW | 74LVC8T245PW |
|---|---|---|---|---|---|
| Package | TSSOP-20 (PW) | TSSOP-20 (PW) - same | TSSOP-20 (PW) - same | TSSOP-20 (PW) - same | TSSOP-20 (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | NXP Semiconductors |
| Bits / Channels | 8 bidirectional | 8 bidirectional | 8 bidirectional | 8 bidirectional | 8 bidirectional (DIR-controlled) |
| Open-Drain Support (Internal Pull-Ups) | Yes (10 kOhm) | Yes (10 kOhm) | No | No | No |
| Max Push-Pull Data Rate | 110 Mbps | 110 Mbps | 100 Mbps | [DATA_NEEDED] | [DATA_NEEDED] |
| Automotive AEC-Q100 | Yes (grade 1, -40C to +125C) | No (commercial) | Yes (Q1) | [DATA_NEEDED] | [DATA_NEEDED] |
| Direction Control | None (auto-direction) | None (auto-direction) | None (auto-direction) | None (auto-direction) | DIR pins required |
| Approx. Unit Price (qty 1000) | $0.39 | $0.35 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Open-drain capable with integrated 10 kOhm pull-ups (vs TXB0108QPWRQ1)
- Automotive AEC-Q100 grade 1 qualification (vs TXS0108EPWR)
- Auto-direction, no DIR pins (vs 74LVC8T245PW)
Design Notes
Power VCCA first or simultaneously with VCCB; hold OE low until both supplies are valid so all I/O stay in 3-state during sequencing. The datasheet allows any power-up order but the OE control prevents mid-ramp glitching into the 5V domain. Decouple VCCA and VCCB with 0.1 uF ceramic capacitors placed within 2 mm of the pins.
Do not use the TXS0108E on lines that must sink heavy loads (LEDs, relays): the internal 10 kOhm pull-ups and ~4 kOhm series pass element provide only weak drive. Also avoid weak external pull-ups below the internal 10 kOhm threshold interfering with auto-direction edge detection; keep bus capacitance low on open-drain channels to meet the 2 Mbps limit.
Keep traces short and reference a solid ground plane; the one-shot edge accelerators sharpen rise edges, so long stubs can cause reflections on 100 Mbps-class signals. Unused channels should have both A and B sides tied to ground or left floating per the datasheet recommendation, and APU/VCC pins must not be left unconnected on variants that expose them.
Compliance Information
AEC-Q100 qualified grade 1 per TI product data. RoHS/lead-free per standard TI automotive production. REACH and conflict-minerals declarations available from TI material certification page.
