Renesas 71T75802S150PFG8

Overview

71T75802S150PFG8 from IDT (now Renesas) is a 2.5V synchronous ZBT™ SRAM with 1M x 18-bit organization (18 Mbit), 200 MHz operation, 3.2 ns clock-to-data access, zero bus turnaround architecture, and pipelined burst reads/writes. It serves as high-speed buffer memory in network packet processors and telecom line cards requiring deterministic latency and seamless read/write transitions.

For engineers reviewing the 71T75802S150PFG8 datasheet, 71T75802S150PFG8 pinout, 71T75802S150PFG8 application, or 71T75802S150PFG8 equivalent, key selection criteria include ZBT™ burst timing compliance, TQFP-100 package compatibility, 2.5V I/O voltage tolerance, industrial temperature support (–40°C to +85°C), and JTAG IEEE 1149.1 test interface availability.

Technical Context

The 71T75802S150PFG8 implements a fully synchronous, clock-edge-triggered architecture with registered address, control, and data paths. Its internal burst counter supports 4-word linear or interleaved sequences controlled by the LBO pin, and ADV/LD governs address load versus counter increment.

ZBT™ operation eliminates dead cycles between consecutive read/write operations via internally synchronized output buffer enable and single R/W control. The device uses three chip enables (CE1, CE2, CE2) for depth expansion and includes a synchronous ZZ sleep mode for power reduction while retaining data.

Key Specifications

Pinout & Package

Packaged in JEDEC-standard 100-pin thin quad flatpack (TQFP), 14 mm × 20 mm body, 0.5 mm pitch. Pinout validated per IDT document 5313 drw 02ra (1M x 18 configuration).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1315KV18 and AS7C31026B, the 71T75802S150PFG8 delivers 21% higher bandwidth (200 vs. 165 MHz), integrated JTAG for production testability, and true zero-turnaround operation essential for telecom packet buffers - making it irreplaceable in latency-critical synchronous architectures.

Availability

71T75802S150PFG8 is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and industrial PLC data logging requiring stable component supply, long-term lifecycle assurance, and industrial temperature qualification.

Supply support for 71T75802S150PFG8 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

IDT (Integrated Device Technology), now part of Renesas Electronics, is a fabless semiconductor company specializing in high-performance timing, memory, and interface solutions for communications and computing infrastructure.

The 71T75802S150PFG8 belongs to IDT's ZBT™ SRAM product line, engineered specifically for zero-latency memory subsystems in packet-switching, baseband processing, and real-time control applications demanding deterministic burst performance.

FAQ

What memory organization does the 71T75802S150PFG8 support?

The 71T75802S150PFG8 is configured as 1M x 18-bit (1,048,576 words × 18 bits), delivering 18,874,368 total bits. It does not support the 512K x 36-bit variant - that configuration applies to the 71T75602 family member. Pinout and timing parameters are specific to the 1M x 18 structure in the 71T75802S150PFG8.

Does the 71T75802S150PFG8 support JTAG boundary scan?

Yes, the 71T75802S150PFG8 includes a fully compliant IEEE 1149.1 JTAG interface with TMS, TDI, TCK, and TDO pins. TRST is optional and available only in BGA packages; the TQFP-100 version (71T75802S150PFG8) omits TRST but retains full boundary-scan functionality via the four mandatory JTAG signals.

What is the function of the ADV/LD and LBO pins on the 71T75802S150PFG8?

On the 71T75802S150PFG8, ADV/LD controls burst sequencing: sampled low at CLK rise, it loads a new external address; sampled high, it advances the internal 4-word burst counter. LBO selects burst order - low enables linear (0,1,2,3), high enables interleaved (0,2,1,3) - and must remain static during operation.

Can the 71T75802S150PFG8 operate in industrial temperature range?

Yes, the 71T75802S150PFG8 is qualified for industrial temperature operation from –40°C to +85°C. This rating is explicitly confirmed in the datasheet (Section 8, "Recommended Operating Temperature and Supply Voltage") and applies to the PFG8 suffix variant, ensuring reliability in base station, router, and factory automation environments.

How does the ZBTTM feature eliminate dead cycles in the 71T75802S150PFG8?

The ZBTTM (Zero Bus Turnaround) feature in the 71T75802S150PFG8 removes dead cycles by synchronizing output buffer enable internally and using a single R/W control pin. This allows immediate transition from read to write (or vice versa) without bus float time - verified in functional timing diagrams where consecutive read/write cycles occur with no intervening idle clocks.