ULN2003A Alternatives: Darlington Array Cross-Reference
Seven channels, built-in clamp diodes, and a pinout that has not changed in forty years — what to check before you substitute one.
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Interface, driver, and transceiver products identified by the audited product type values.
FT232BL-JSM - JSMICRO USB/CAN IC, QFP-32
GL3231-OOY04 - Genesys Logic Interface IC, QFN-52
LP103SB6F - LOWPOWER Interface IC, SOT-23-6
SL2.1A - CoreChips Interface IC, SOP-16
CYUSB2014-BZXCT - Infineon Technologies USB/CAN IC, FBGA
CYUSB3324-88LTXIT - Infineon Technologies USB/CAN IC, QFN
FT245RNL-TUBE - FTDI Chip USB/CAN IC, SSOP-28
NX20P3483UK/S100Z - NXP Semiconductors Interface IC, WLCSP-42-2-91X2-51
MAX3453EEUD - Analog Devices Interface IC, TSSOP-14
CYAC1126-40LQXI - Infineon Technologies USB/CAN IC, QFN
CYUSB4014FCAXIXQMA1 - Infineon Technologies USB/CAN IC, FBGA-169
USB2534I-1051AEN - Microchip Technology USB/CAN IC, TSSOP-14
USB3300-EZK-CAG - Microchip Technology USB/CAN IC, QFN-32-5X5
CH9101Y - WCH Interface IC, QFN-16-EP (4x4mm)
CH132B - WCH Interface IC, QFN-32
CH552T - WCH Interface IC, TSSOP-20
CH334S - WCH Interface IC, SSOP-28
FT232RNL - GBICRONIC USB/CAN IC, SSOP-28
CG7941AA - Cypress Semiconductor Interface IC, QFN-56
CYPD6125-40LQXI - Infineon Technologies USB/CAN IC, QFN
CYPD5126-40LQXI - Infineon Technologies USB/CAN IC, QFN-40
TUSB2036AVF - Texas Instruments USB/CAN IC, LQFP-32
M66291GP#RB0S - Renesas Electronics Interface IC, QFP-64 (10×10 mm)
GL3523-ONY30 - Genesys Logic Interface IC, QFN-48-EP
Supply boundary
Product records help identify a manufacturer part number and technical family. A listed part may be fulfilled from Chip-seek warehouse-held stock or a reviewed sourcing channel. Source, quantity, packaging, date code, MOQ, price and lead time are confirmed before an order is accepted.
From the desk
Market signals, technical notes, and practical sourcing guidance for semiconductor procurement.
Seven channels, built-in clamp diodes, and a pinout that has not changed in forty years — what to check before you substitute one.
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The 8 MB SPI flash behind a million embedded designs: package traps, firmware checks, and when 64 Mbit is still the right density.
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The 16-pin transceiver that turns 3.3 V logic into RS-232: which parts really fit, and why the charge-pump capacitors decide the outcome.
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The three-terminal regulator on millions of boards: which parts really fit, and why the thermal math matters more than the pinout.
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A 3 A buck converter that refuses to die: which replacements fit the same pads, which need a new layout, and how to choose between them.
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The 48-pin Cortex-M3 that became an industry default: which alternatives really fit, and what breaks when you swap one in.
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4 MB of SPI flash: the smallest density that still supports OTA, and the one where package width trips up more designs than density does.
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A practical cross-reference for the 128 Mbit SPI NOR part: what must match, where firmware breaks, and how to qualify a second source.
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