Infineon Technologies CY7C107D-10VXIT

Overview

CY7C107D-10VXIT from Cypress Semiconductor is a 1-Mbit (1,048,576 × 1) high-speed CMOS static RAM with 10 ns access time, TTL-compatible I/O, and automatic CE-controlled power-down. It operates at 5 V ±0.5 V over –40 °C to +85 °C, draws 80 mA active current and 3 mA CMOS standby current (ISB2), and supports 2.0 V data retention - used in legacy industrial controllers requiring fast, low-power, pin-compatible SRAM replacement.

For engineers reviewing the CY7C107D-10VXIT datasheet, CY7C107D-10VXIT pinout, CY7C107D-10VXIT application, or CY7C107D-10VXIT equivalent, key selection criteria include TTL-level interface compatibility, 28-pin 400-mil SOJ packaging, 10 ns read/write cycle timing, automatic CE-driven power-down behavior, and support for memory expansion via tri-state outputs and dual enable control.

Technical Context

This SRAM implements a synchronous, address-decoded 1M×1 array with row/column decoding, sense amplifiers, and input/output buffers optimized for TTL logic families. Its CE/WE dual-control architecture enables precise read/write gating, while automatic power-down activates when CE is HIGH under CMOS input conditions (VIN > VCC–0.3 V or < 0.3 V), reducing ICC to ≤3 mA.

The device uses standard TTL voltage thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and delivers VOH ≥ 2.4 V (IOH = –4.0 mA), making it incompatible with pure CMOS processors requiring VIH ≥ 3.5 V. Output high-impedance is asserted on CE HIGH or during write (CE & WE LOW), with tHZCE ≤ 5 ns and tLZCE ≥ 3 ns under 30-pF load.

Key Specifications

Pinout & Package

Package: 28-pin 400-mil wide molded SOJ (Small Outline J-lead), Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SRAM applications.

Compared with CY7C107B-10VXI, CY7C107D-10VXIT offers verified Pb-free compliance and 65% lower standby current; versus AS6C1008-10TIN, it provides native TTL compatibility but mandates 400-mil SOJ placement and prohibits CMOS-biased input conditions.

Availability

CY7C107D-10VXIT is available at Aetrix Electronics and suitable for industrial PLCs, legacy microcontroller systems, avionics data loggers, and automated test equipment requiring stable component supply, long-lifecycle support, and RoHS-compliant 5 V SRAM.

Supply support for CY7C107D-10VXIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in memory, microcontrollers, and programmable logic solutions for industrial, automotive, and communications markets.

CY7C107D belongs to Cypress's legacy high-speed CMOS SRAM product line, designed specifically for pin-compatible upgrades in 5 V TTL-based embedded systems requiring deterministic access timing and low-power deselected operation.

FAQ

Is CY7C107D-10VXIT compatible with 3.3 V microcontrollers?

No. CY7C107D-10VXIT requires a 5 V ±0.5 V supply and accepts only TTL-level inputs (VIH ≥ 2.2 V, VIL ≤ 0.8 V). It does not support 3.3 V I/O signaling or mixed-voltage operation. Interfacing with 3.3 V processors requires level-shifting circuitry or substitution with a 3.3 V–compatible SRAM such as ISSI IS61LV102416.

What is the maximum operating frequency supported by CY7C107D-10VXIT?

The device supports up to 100 MHz bus operation, derived from its 10 ns read cycle time (tRC = 10 ns). At this rate, full read/write cycles complete every 10 ns, enabling sustained throughput of 100 million operations per second without wait states when interfaced with compliant 5 V TTL bus drivers.

Does CY7C107D-10VXIT require external pull-up resistors on control lines?

No external pull-ups are required on CE or WE. The device features internal input clamps and TTL-compatible thresholds; however, unused address pins (A0–A19) and NC pins must remain unconnected or grounded per Cypress layout guidelines to prevent noise coupling and ensure signal integrity.

Can CY7C107D-10VXIT retain data during complete power loss?

Yes - at VCC = 2.0 V, the device enters data retention mode with ICCDR ≤ 3 mA and maintains stored bits indefinitely as long as voltage remains ≥2.0 V. This enables use with backup batteries or supercapacitors, but full functionality (read/write) resumes only after VCC ramps linearly to ≥5.0 V within >50 µs.