TXB0108

Part: TXB0108 from Texas Instruments

Type: 8-Bit Bidirectional Voltage-Level Translator with Auto-Direction Sensing

Description: The TXB0108 is an 8-bit noninverting bidirectional voltage-level translator with auto-direction sensing, supporting 1.2V to 3.6V on the A port and 1.65V to 5.5V on the B port, with ±15kV ESD protection.

Operating Conditions:

• Supply voltage: VCCA 1.2V to 3.6V, VCCB 1.65V to 5.5V
• Operating temperature: -40 to 85 °C
• Input transition rise or fall rate: 40 ns/V (A-port), 40 ns/V (B-port for VCCB 1.65V to 3.6V), 30 ns/V (B-port for VCCB 4.5V to 5.5V)

Absolute Maximum Ratings:

• Max supply voltage: VCCA 4.6 V, VCCB 6.5 V
• Max continuous current: ±50 mA (output), ±100 mA (through VCCA, VCCB, or GND)
• Max junction/storage temperature: 150 °C (Junction), 150 °C (Storage)

Key Specs:

• Quiescent supply current (I CCA + I CCB): 10 μA max (VCCA 1.4V to 3.6V, VCCB 1.65V to 5.5V)
• High-level output voltage (V OHA): V CCA - 0.4 V min (I OH = -20μA)
• Low-level output voltage (V OLA): 0.4 V max (I OL = 20μA)
• High-level output voltage (V OHB): V CCB - 0.4 V min (I OH = -20μA)
• Low-level output voltage (V OLB): 0.4 V max (I OL = 20μA)
• OE input current (I I): ±2 μA max
• A port input/output capacitance (C io): 6.5 pF max
• B port input/output capacitance (C io): 13.3 pF max

Features:

• 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (V CCA ≤ VCCB)
• VCC Isolation Feature - If Either V CC Input Is at GND, All Outputs Are in the High-Impedance State
• OE Input Circuit Referenced to VCCA
• Ioff Supports Partial-Power-Down Mode Operation
• Low Power Consumption, 4μA Max ICC
• Latch-Up Performance Exceeds 100mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22 (A Port 2000V HBM, B Port ±15kV HBM)

Applications:

• Handset
• Smartphone
• Tablet
• Desktop PC

Package:

• SON (20)
• BGA MICROSTAR JUNIOR (20)
• TSSOP (20)
• VQFN (20)
• DSGBA (20)
• nFBGA (20)
• WQFN (20)
• VSSOP (20)

• 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (V CCA ≤ VCCB)
• VCC Isolation Feature - If Either V CC Input Is at GND, All Outputs Are in the High-Impedance State
• OE Input Circuit Referenced to VCCA
• Ioff Supports Partial-Power-Down Mode Operation
• Low Power Consumption, 4μA Max ICC
• Latch-Up Performance Exceeds 100mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
• -A Port
• 2000V Human-Body Model (A114-B)
• 1000V Charged-Device Model (C101)
• -B Port
• ±15kV Human-Body Model (A114-B)
• ±8kV Human-Body Model (A114-B) (YZP Package Only)
• 1000V Charged-Device Model (C101)

Figure 4-1. DGS/PW Package (Top View)

Figure 4-3. RGY/RKS Package (Top View)

(BALL SIDE VIEW) YZPR2 PACKAGE (1)

(1) See orderable addendum at the end of the data sheet

Figure 4-5. YZPR2 PACKAGE (BALL SIDE VIEW)

• A. For the RKS/RGY/RUK package, the exposed center thermal pad must be connected to ground.
• B. Pullup resistors are not required on both sides for Logic I/O.
• C. If pullup or pulldown resistors are needed, the resistor value must be over 50kΩ.
• D. 50kΩ is a safe recommended value, if the customer can accept higher VOL or lower VOH, smaller pullup or pulldown resistor is allowed, the draft estimation is VOL = VCCOUT × 4.5k/(4.5k + RPU) and VOH = VCCOUT × RDW/(4.5k + RDW).
• E. If pullup resistors are needed, please refer to the TXS0108 or contact TI.
• F. For detailed information, please refer A Guide to Voltage Translation With TXB-Type Translators.

Figure 4-2. DQS Package (Top View)

Figure 4-2. DQS Package (Top View)

Figure 4-4. RUK Package (Top View)

Figure 4-6. NME/GXY/ZXY PACKAGE (BOTTOM VIEW)

over recommended operating free-air temperature range (unless otherwise noted) (1) (2)

over recommended operating free-air temperature range (unless otherwise noted) (1) (2)

over operating free-air temperature range (unless otherwise noted) (1)

over operating free-air temperature range (unless otherwise noted) (1) (2)

over operating free-air temperature range (unless otherwise noted) (1) (2)

The TXB0108 can be used in level-translation applications for interfacing devices or systems operating at different interface voltages with one another. It can only translate push-pull CMOS logic outputs. If for opendrain signal translation, please refer to TI TXS010X products. Any external pulldown or pullup resistors are recommended to be larger than 50kΩ.

• (1) For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application Block Diagram for TXB0108

Typical Application Block Diagram for TXB0108