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Alternatives to Infineon Technologies CY7C1354C-166AXI

Infineon Technologies CY7C1354C-166AXI and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

CY7C1354C-166AXI compared against its qualified second sources
CY7C1354C-166AXIInfineon TechnologiesIS61NLP25636B-200TQLIISSI, Integrated Silicon Solution IncIS61NLP25636B-200TQLISSI, Integrated Silicon Solution Inc+1more
FFF CompatibilityPinout is extremely similar; however, Pin 17 is tied to Ground (VSS) on the ISSI alternative, whereas it is a No Connect (NC) on the obsolete Cypress part. It is a drop-in if Pin 17 on the PCB layout is left floating or tied to Ground.Both devices are packaged in the standard 100-pin TQFP/LQFP package with identical physical body dimensions (14 mm x 20 mm).Direct functional equivalent utilizing No Latency Pipelined (NoBL compatible) synchronous architecture, with superior speed ratings (200 MHz, 3.1 ns) and matching 3.3V supply voltage range.Pin 17 is tied to Ground (VSS) on the ISSI alternative, whereas it is a No Connect (NC) on the obsolete Cypress part. It is a drop-in if Pin 17 on the PCB layout is left floating or tied to Ground.Both devices are packaged in the standard 100-pin TQFP/LQFP package with identical physical body dimensions (14 mm x 20 mm).The device is functionally compatible but only rated for the Commercial temperature range (0°C to +70°C), whereas the original Cypress part supports the Industrial temperature range (-40°C to +85°C).
AI Summary

CY7C1354C-166AXI by Infineon Technologies: SRAM - Synchronous, SDR Memory IC 9Mbit Parallel 166 MHz 3.5 ns 100-TQFP (14x20).

The IS61NLP25636B-200TQLI is the highest-confidence active replacement. It matches the obsolete Cypress NoBL architecture, voltage, and industrial temperature range, while offering slightly improved speed ratings. Pin 17 is routed to Ground instead of being a No Connect, requiring verification of the host PCB layout.

  • Active lifecycle status ensures long-term availability
  • Exceeds original clock speed (200 MHz vs 166 MHz) for improved timing margins
  • Faster read access time (3.1 ns vs 3.5 ns)
  • Pin 17 is tied to VSS (GND) instead of being a No Connect (NC), requiring board layout verification.

This commercial-grade variant of the ISSI series provides identical footprint and electrical advantages over the original part. However, it is only suitable for applications that do not require the extended industrial temperature range of the obsolete target.

  • Active lifecycle status ensures long-term availability
  • Exceeds original clock speed (200 MHz vs 166 MHz) for improved timing margins
  • Faster read access time (3.1 ns vs 3.5 ns)
  • Narrower operating temperature range (0°C to +70°C vs -40°C to +85°C)
  • Pin 17 is tied to VSS (GND) instead of being a No Connect (NC)
Lifecycle StatusObsoleteActiveUnknown
Market AvailabilityIn stockNon-stockUnknown
REACHREACHREACHUnknown
RoHSRoHSRoHSUnknown
DescriptionSRAM - Synchronous, SDR Memory IC 9Mbit Parallel 166 MHz 3.5 ns 100-TQFP (14x20)SRAM - Synchronous, SDR Memory IC 9Mbit Parallel 200 MHz 3.1 ns 100-LQFP (14x20)This commercial-grade variant of the ISSI series provides identical footprint and electrical advantages over the original part. However, it
ManufacturerInfineon TechnologiesISSI, Integrated Silicon Solution IncISSI, Integrated Silicon Solution Inc
TypeMemoryMemoryComponent
DatasheetOpenOpenN/A
Lead Time26 weeks26 weeksUnknown
Country of OriginCN, TW--
Export Control Class Number3A991B2A3A991B2AEAR99
HTSUS Code8542.32.0041--
Moisture Sensitivity Level3 (168 Hours)--
TechnologySRAM - Synchronous, SDR--
Access Time3.5 ns--
Memory Size9Mbit--
Memory TypeVolatile--
Memory FormatSRAM--
Mounting TypeSurface Mount--
Package / Case100-LQFP--
Clock Frequency166 MHz--

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Frequently asked questions

Yes. The Infineon Technologies CY7C1354C-166AXI is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

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