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SMD code CT2Z

Marking codes are not standardised, and the same code is reused by unrelated makers for unrelated parts. Below is every part in our tables printed with it, and any printed with a code that is easy to misread as it, from the manufacturers' own marking tables and published code lists.

2 parts are printed CT2Z

Not sure which one you have?

Answer up to 4 quick questions and these 2 parts are ranked, with a meter test that settles it. It works on a dead part too.

all Texas Instruments. What differs:

  • SN74LVC2T45DCTSSOPNot recordedSSOP
    What it is
    Not recorded
    Maker
    Texas Instruments
    Package
    SSOP
    Pins
    Not recorded
    Details
    CMOS logic IC: Dual-bit, dual-supply voltage level translator/transceiver with 3-state output
    Source
    Published code list

    Is it dead? The meter test is below: Integrated circuit.

  • SN74LVC2T45DCUMSOP-8Logic level translatorLogic level translatorMSOP-8
    What it is
    Logic level translator
    Maker
    Texas Instruments
    Package
    MSOP-8
    Pins
    8
    Details
    Dual-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation
    Source
    An older or alternative marking, from a published code list

    Is it dead? The meter test is below: Integrated circuit.

    Datasheetfor SN74LVC2T45DCU, opens in a new tab

Is it dead? One meter test per kind

Parts of the same kind are tested the same way, so each test is here once. Each part above points to its own.

Integrated circuit

Voltage with the board powered; ohms from each pin to ground with it off.

Working, it reads

Supply pin at its voltage and the output doing what the datasheet says. Readings between pins depend on the part.

Dead, it reads

  • A pin near 0 Ω to ground or to the supply pin where an identical part does not read that: failed short.
  • Supply present, output stuck: failed, or its load has.
On the board:
A pin shorted to ground on the board can be anything on that net. Lift the pin to be sure.
Compare:
The surest reference is the same IC on a working board, measured pin by pin.
Watch for:
Its protection diodes can read like junctions between pins, even like a transistor. That proves nothing either way.

A dead part still carries its marking. A short or an open says it has failed, not that it is a different part.

Codes that begin with CT2Z

For a marking with its end worn or burnt off. Each code has a page of its own.

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