TXS4558RUKR
ActiveDUAL SIM CARD POWER SUPPLY WITH LEVEL TRANSLATOR AND DEDICATED DUAL LDO
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TXS4558RUKR
ActiveDUAL SIM CARD POWER SUPPLY WITH LEVEL TRANSLATOR AND DEDICATED DUAL LDO
Technical Specifications
Parameters and characteristics for this part
| Specification | TXS4558RUKR |
|---|---|
| Channel Type | Bidirectional |
| Channels per Circuit | 1 |
| Features | SIM Card Interface |
| Mounting Type | Surface Mount |
| Number of Circuits | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 20-WFQFN Exposed Pad |
| Supplier Device Package | 20-WQFN (3x3) |
| Translator Type | Voltage Level |
| Voltage - VCCA [Max] | 3.3 V |
| Voltage - VCCA [Min] | 1.65 V |
| Voltage - VCCB [Max] | 5.5 V |
| Voltage - VCCB [Min] | 2.3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 0.96 | |
| 10 | $ 0.86 | |||
| 25 | $ 0.82 | |||
| 100 | $ 0.67 | |||
| 250 | $ 0.63 | |||
| 500 | $ 0.55 | |||
| 1000 | $ 0.44 | |||
| Digi-Reel® | 1 | $ 0.96 | ||
| 10 | $ 0.86 | |||
| 25 | $ 0.82 | |||
| 100 | $ 0.67 | |||
| 250 | $ 0.63 | |||
| 500 | $ 0.55 | |||
| 1000 | $ 0.44 | |||
| Tape & Reel (TR) | 3000 | $ 0.41 | ||
| 6000 | $ 0.39 | |||
| 15000 | $ 0.37 | |||
| Texas Instruments | LARGE T&R | 1 | $ 0.82 | |
| 100 | $ 0.63 | |||
| 250 | $ 0.46 | |||
| 1000 | $ 0.33 | |||
Description
General part information
TXS4558 Series
The TXS4558 is a complete dual-supply standby Smart Identity Module (SIM) card solution for interfacing wire-less baseband processors with two individual SIM subscriber cards to store data for mobile handset applications. It is a custom device which is used to extend a single SIM/UICC interface to be able to support two SIM’s/UICC’s.
The device complies with ISO/IEC Smart-Card Interface requirements as well as GSM and 3G mobile standards. It includes a high-speed level translator capable of supporting Class-B (2.95 V) and Class-C (1.8 V) interfaces, two low-dropout (LDO) voltage regulators that have output voltages that are selectable between 2.95-V Class-B and 1.8-V Class-C interfaces. Simple GPIO inputs are used to switch between the two SIM cards and to put it into different modes. The voltage-level translator has two supply voltage pins. VCC sets the reference for the baseband interface and can be operated from 1.65 V to 3.3 V. VSIM1 and VSIM2 are programmed to either 1.8 V or 2.95 V, each supplied by an independent internal LDO regulator. The integrated LDO accepts input battery voltages from 2.3 V to 5.5 V and outputs up to 50 mA to the B-side circuitry and external Class-B or Class-C SIM card.
The TXS4558 also incorporates shutdown sequence for the SIM card pins based on the ISO 7816-3 specification for SIM cards. The device also has 8kV HBM protection for the SIM card pins and standard 2kV HBM protection for all the other pins.
Documents
Technical documentation and resources
