TXS0108E

Part: TXS0108E

Type: 8-Bit Bi-Directional Voltage Translator

Description: 8-bit auto-direction-sensing voltage level translator supporting 1.4–3.6 V on port A and 1.65–5.5 V on port B with data rates up to 110 Mbps (push-pull) and 1.2 Mbps (open-drain).

Operating Conditions:

• Supply voltage: 1.4 to 3.6 V (VCCA), 1.65 to 5.5 V (VCCB, VCCA ≤ VCCB)
• Operating temperature: -40 to 85 °C
• Input transition rise/fall rate: 10 ns/V max

Absolute Maximum Ratings:

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

Key Specs:

• Maximum data rate: 110 Mbps (push-pull), 1.2 Mbps (open-drain)
• High-level output voltage VOHA: VCCA × 0.67 V min (IOH = -20 μA, VIB ≥ VCCB - 0.4 V)
• Low-level output voltage VOLA: 0.4 V max (IOL = 180 μA, VIB ≤ 0.15 V, VCCA = 1.4 V)
• High-level output voltage VOHB: VCCB × 0.67 V min (IOH = -20 μA, VIA ≥ VCCA - 0.2 V)
• Low-level output voltage VOLB: 0.4 V max (IOL = 220 μA, VIA ≤ 0.15 V, VCCB = 1.65 V)
• Input leakage current II (OE): 2 μA max (VI = VCCI or GND, TA = -40°C to 85°C)
• High-impedance output current IOZ: ±2 μA max (A or B port, TA = -40°C to 85°C)
• Combined supply current ICCA + ICCB: 8 μA max (TA = -40°C to 85°C, IO = 0)

Features:

• No direction-control signal needed
• No power-supply sequencing required (either VCCA or VCCB can be ramped first)
• Latch-up performance exceeds 100 mA per JESD 78, class II
• ±8 kV Contact Discharge and ±6 kV Air Discharge ESD protection on B port (IEC 61000-4-2)
• Port A ESD protection exceeds 2000 V HBM, 150 V MM, and 1000 V CDM

Applications:

• Handsets
• Smartphones
• Tablets
• Desktop PCs

Package:

• TSSOP-20 (PW, 6.50 mm × 6.40 mm)
• VQFN-20 (RGY, 4.50 mm × 3.5 mm)
• VSSOP-20 (DGS, 3.00 mm × 5.10 mm)
• VQFN-20 (RKS, 4.5 mm × 2.5 mm)
• UFBGA-20 (ZXY, 2.50 mm × 3.00 mm)
• NFBGA-20 (NME, 2.50 mm × 3.00 mm)

• No direction-control signal needed
• Maximum data rates:
• -110Mbps (push pull)
• -1.2Mbps (open drain)
• 1.4V to 3.6V on A port and 1.65V to 5.5V on B port (VCCA ≤ VCCB)
• No power-supply sequencing required - either VCCA or VCCB can be ramped first
• Latch-up performance exceeds 100mA per JESD 78, class II
• ESD protection exceeds JESD 22 (A port):
• -2000 V Human Body Model (A114-B)
• -150 V Machine Model (A115-A)
• -1000 V Charged-Device Model (C101)
• IEC 61000-4-2 ESD (B-port):
• -± 8kV Contact Discharge
• -± 6kV Air Discharge

• Handsets
• Smartphones
• Tablets
• Desktop PCs

Figure 4-1. ZXY Package, 20 BUMP (Bottom View)

Figure 4-2. NME Package, 20 BGA (Bottom View)

over recommended operating free-air temperature range (unless otherwise noted) (1) (2) (3)

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

• (2) The input and output negative Voltage ratings may be exceeded if the input and output current ratings are observed.
• (3) The value of VCCA and VCCB are provided in the recommended operating conditions table.

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

The TXS0108E can be used in level-translation applications for interfacing devices or systems operating at different interface voltages with one another. The device is an excellent choice for use in applications where an open-drain driver is connected to the data I/Os. The device is appropriate for applications where a push-pull driver is connected to the data I/Os, but the TXB0104 device, 4-Bit Bidirectional Voltage-Level Translator might be a better option for such push-pull applications. The device is a semi-buffered auto-direction-sensing voltage translator design is optimized for translation applications (for example, MMC Card Interfaces) that require the system to start out in a low-speed open-drain mode and then switch to a higher speed push-pull mode.

• (1) For more information, see Section 11
• (2) The package size (length × width) is a nominal value and includes pins, where applicable.