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Analog Devices LTC1555LEGN-1.8#PBF — DC-DC Power Modules
Analog Devices

LTC1555LEGN-1.8#PBF Voltage Level Translator

MPNLTC1555LEGN-1.8#PBF
End of Life

Analog Devices LTC1555LEGN-1.8#PBF, Voltage Level Translator, Bidirectional, Open Drain, 1 Circuit, 1 Channel, 16-SSOP Package, Surface Mount, -40°C to 85°C.

$7.01Ref. price · indicative, final on quote
LTC1555LEGN-1.8#PBF datasheet
Packaging16-SSOP (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LTC1555LEGN-1.8#PBF Technical Specifications
ParameterValue
Output typeOpen Drain
Channel typeBidirectional
Mounting typeSurface Mount
Translator typeVoltage Level
Voltage - VCCA1.425 V ~ 4.4 V
Voltage - VCCB2.6 V ~ 6 V
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FeaturesSIM Card Interface, Thermal-Shutdown Protection
Case16-SSOP (0.154\", 3.90mm Width)
Number of circuits1
Channels per circuit1

Product details

SIM card voltage translator with thermal shutdown

The Analog Devices LTC1555LEGN-1.8#PBF is a single-channel bidirectional voltage level translator designed specifically for SIM card interfaces. It integrates thermal-shutdown protection and an open-drain output stage, making it a drop-in solution for translating between a low-voltage host controller (VCCA: 1.425 V to 4.4 V) and a SIM card operating at a higher voltage (VCCB: 2.6 V to 6 V). The part is housed in a 16-SSOP surface-mount package and rated for industrial temperature environments from -40°C to 85°C.

Supply voltage ranges — matching the SIM and the host

VCCA accepts 1.425 V to 4.4 V. VCCB spans 2.6 V to 6 V.

Single bidirectional channel — one bit at a time

This is a one-circuit, one-channel translator with bidirectional open-drain outputs.

Thermal shutdown — protection for the SIM slot

The integrated thermal-shutdown protection disables the output drivers if the die temperature exceeds the threshold.

Active lifecycle — no end-of-life concern

The LTC1555LEGN-1.8#PBF is listed as Active with ROHS3 compliance. There is no last-time-buy notice or obsolescence risk for this order code. The Tube shipping medium is suitable for prototype and low-volume builds; if your production line requires Tape & Reel, the LTC1555LEGN-1.8#TRPBF variant uses the same die and package but ships in Tape & Reel, Cut Tape, or Digi-Reel.

Frequently asked questions

Is LTC1555LEGN-1.8#PBF suitable for SIM card voltage translation?

Yes, it is specifically designed for SIM card interfaces. It includes thermal-shutdown protection and supports bidirectional open-drain level translation between a low-voltage host and a higher-voltage SIM card.

Does LTC1555LEGN-1.8#PBF have open-drain outputs and how many channels?

Yes, the output type is open drain. It has one circuit with one bidirectional channel.

What is the difference between LTC1555LEGN-1.8 and LTC1555LEGN?

The LTC1555LEGN-1.8#PBF has a fixed 1.8 V nominal VCCA range (1.425 V to 4.4 V), while the LTC1555LEGN#PBF (without the -1.8 suffix) has a VCCA range starting at 1.425 V but with a different default programming. Both are bidirectional single-channel translators with SIM card interface and thermal shutdown. The -1.8 variant is optimized for 1.8 V host-side operation.

Can LTC1555LEGN-1.8#PBF be used with 1.8V and 3V SIM cards?

Yes. For a 3 V SIM card, set VCCB to 3 V (within the 2.6 V to 6 V range). For a 1.8 V SIM card, VCCB must be at least 2.6 V, so you would need an external regulator to step down from a higher supply to 1.8 V for the SIM card itself, while VCCB remains at 2.6 V or above for the translator.