Infineon Technologies CY7C1474BV33-167BGCT

Overview

CY7C1474BV33-167BGCT from Cypress Semiconductor is a 72-Mbit (1M × 72) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory subsystems in networking and telecom line cards. It operates at 167 MHz with zero wait states, supports synchronous self-timed writes, features 8-byte write capability via BWSa–BWh pins, and uses a single 3.3 V core supply with 3.3 V/2.5 V I/O support.

For engineers reviewing the CY7C1474BV33-167BGCT datasheet, CY7C1474BV33-167BGCT pinout, CY7C1474BV33-167BGCT application, or CY7C1474BV33-167BGCT equivalent, this device delivers deterministic 3.4 ns clock-to-output timing, IEEE 1149.1 JTAG boundary scan, burst read/write in linear or interleaved order, and ZZ sleep mode for low-power standby in backplane interface buffers and packet buffer memory systems.

Technical Context

The CY7C1474BV33-167BGCT implements fully registered synchronous interfaces: all address, control, and data inputs are latched on the rising edge of CLK, and all outputs are driven from output registers synchronized to CLK. Its NoBL™ logic eliminates bus latency by enabling true back-to-back read/write operations without wait states.

It supports three chip enables (CE1 active-low, CE2 active-high, CE3 active-low) for flexible bank selection, asynchronous OE for tri-state control, and CEN to suspend clock recognition without deselecting the device. Byte write select signals (BWSa–BWh) enable independent 8-bit write masking aligned to DQa–DQh and associated parity bits (DQPa–DQPh).

Key Specifications

Pinout & Package

This device is packaged in a Pb-free/non-Pb-free 209-ball FBGA (14 × 22 × 1.76 mm, ball pitch 1.0 mm), optimized for high-density routing and thermal dissipation in multi-layer telecom PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1474BV33-167BGCT, the CY7C1472BV33-167BZI trades byte-write flexibility and full 72-bit parallelism for smaller package and lower pin count, while the IDT72V2135L10PF sacrifices testability and ultra-low-power modes for proven field reliability in non-JTAG environments.

Availability

CY7C1474BV33-167BGCT is available at Aetrix Electronics and suitable for packet buffer memory, backplane interface buffering, and telecom line card FIFO applications requiring stable component supply across extended production lifecycles.

Supply support for CY7C1474BV33-167BGCT 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 fabless semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial and communications infrastructure.

CY7C1474BV33 belongs to Cypress's NoBL™ SRAM product line, engineered specifically for deterministic, zero-wait-state memory subsystems in carrier-grade networking equipment where throughput and timing predictability are non-negotiable.

FAQ

What is the function of the ADV/LD pin in CY7C1474BV33-167BGCT?

The ADV/LD pin controls the internal burst address counter: when HIGH and CEN is active, it advances the counter for sequential burst accesses; when LOW, it loads a new base address from A0–A17. This dual-mode operation enables both continuous streaming and random-access initiation without external address generation logic.

Does CY7C1474BV33-167BGCT support 2.5 V I/O operation with 3.3 V core supply?

Yes - the device has separate VDDQ pins for I/O voltage, allowing 2.5 V operation while maintaining 3.3 V on VDD for core logic. This is confirmed in the "Electrical Characteristics" table (Rev. *O, p.23) and enables direct interfacing with 2.5 V FPGAs or ASICs without level shifters.

How does the ZZ sleep mode differ from CEN-based clock suspension?

ZZ mode actively powers down internal circuitry beyond clock gating, reducing current to levels below standard standby (120 mA). CEN only masks CLK and extends the last cycle; ZZ disables dynamic logic blocks and leakage paths - making it essential for extended idle periods in energy-sensitive line cards.

Can CY7C1474BV33-167BGCT be used in place of CY7C1470BV33-167BGI?

No - although pin-compatible within the same FBGA family, CY7C1470BV33 is organized as 2M × 36 (72 Mbit) with only four BWS inputs (BWa–BWd), whereas CY7C1474BV33 is 1M × 72 with eight BWS inputs (BWSa–BWSh). The byte-write granularity and data bus mapping are fundamentally incompatible.