TPT24857-WS8R-S

Translators, Level Shifters Overview

The TPT24857-WS8R-S is an SD 3.0 spec-compliant memory card voltage-level translator with bidirectional control, designed to translate voltages between a 1.2 V to 1.8 V host side and a 1.8 V to 3.0 V card side. It supports high-speed clock modes up to 208 MHz, including SDR104, SDR50, DDR50, SDR25, and SDR12. The device features an integrated 100-mA peak current regulator for card-side I/Os, automatic enable/disable via VSD, and built-in pull-up/pull-down resistors. It includes EMI filters and robust ESD protection (8-kV contact, 15-kV air). Packaged in WLCSP20 with a 0.4 mm pitch, it operates from -40°C to +85°C.

Translators, Level Shifters Feature Summary

• Supports SD 3.0 SDR104 mode with high-speed clock up to 208 MHz
• Integrated 100-mA peak current regulator for card-side power supply
• Automatic enable and disable functionality controlled by VSD
• Built-in EMI filters and integrated pull-up/pull-down resistors

Translators, Level Shifters Applications

• Smartphone
• Mobile Handset and Digital Camera
• Tablet PC/Laptop
• SD, MMC or MicroSD Card Readers

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix WS8R-S corresponds to the WLCSP20 package and tape-and-reel transport media containing 3000 units. Confirm that the component meets RoHS compatibility and halogen-free requirements as defined by the manufacturer's green product standards. Ensure the operating temperature range of -40°C to +85°C aligns with your system design constraints before finalizing procurement.

Translators, Level Shifters Selection Notes

Select this component when designing systems requiring voltage translation between 1.2 V–1.8 V hosts and 1.8 V–3.0 V SD cards. It is suitable for applications demanding SD 3.0 compliance, specifically SDR104 high-speed modes. The integrated regulator and auto-enable features simplify circuit design by reducing external component count. Consider its compact WLCSP20 package for space-constrained mobile devices.

Translators, Level Shifters Part Context

The TPT24857 is part of 3PEAK’s portfolio of analog products focused on signal chain solutions. As an SD 3.0 compliant voltage-level translator, it addresses the need for reliable bidirectional data transfer in portable electronics. The device integrates essential functions like regulation and filtering, offering a compact solution for modern mobile handsets and digital cameras requiring high-speed memory interface support.

Translators, Level Shifters Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications against potential alternatives to ensure functional compatibility without redesigning the PCB layout.

Translators, Level Shifters FAQ

How does the TPT24857 handle voltage level selection for the card side?

The device uses the SEL input pin to select the card-side voltage level. When SEL is HIGH, the internal regulator outputs 1.8 V; when SEL is LOW, it tracks the VSD supply voltage to provide approximately 3.0 V.

What ESD protection levels does the TPT24857 offer?

The TPT24857 provides robust ESD protection on all SD card pins, supporting 8-kV IEC61000-4-2 contact discharge and 15-kV IEC61000-4-2 air-discharge modes.