Renesas 709269S15PF8

Overview

709269S15PF8 from IDT is a 16K × 16-bit synchronous dual-port static RAM with true dual-ported memory cells enabling simultaneous read/write access to the same address from left and right ports, 15 ns clock-to-data access in pipelined mode, TTL-compatible 5 V ±10% operation, and industrial temperature support (–40°C to +85°C). It serves as shared memory buffer in high-speed inter-processor communication systems.

For engineers reviewing the 709269S15PF8 datasheet, 709269S15PF8 pinout, 709269S15PF8 application, or 709269S15PF8 equivalent, key selection criteria include pipelined vs. flow-through output timing, dual-port depth expansion capability via CE0/CE1 control, byte-selectable I/O (UB/LB), and industrial-grade reliability for embedded real-time systems.

Technical Context

This device implements fully synchronous operation on both ports with registered address, data, and control inputs-requiring only 4 ns setup and 1 ns hold time relative to CLK. Its self-timed write architecture enables fast cycle times independent of clock low time, supporting 67 MHz operation in pipelined mode (15 ns cycle time).

The dual-port architecture includes independent address strobes (ADSL/ADSR), counter enable/reset (CNTENL/CNTRSTL and CNTENR/CNTRSTR), and configurable FT/PIPE input per port to select between flow-through (zero-latency) or pipelined (one-cycle latency) output modes-critical for deterministic timing in burst-access applications.

Key Specifications

Pinout & Package

709269S15PF8 is housed in a 100-pin Thin Quad Flatpack (TQFP) package with 0.5 mm pitch, body size 14 mm × 14 mm × 1.4 mm. All VCC and GND pins must be connected per datasheet layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C028V-15AXC and IDT70V9269S15PF, the 709269S15PF8 offers native 5 V operation and guaranteed industrial temperature support-making it optimal for retrofitting or maintaining existing 5 V industrial control hardware without redesigning power or signal integrity.

Availability

709269S15PF8 is available at Aetrix Electronics and suitable for inter-processor communication, real-time DSP buffering, and industrial PLC memory modules requiring stable component supply across extended product lifecycles.

Supply support for 709269S15PF8 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance silicon solutions for communications, computing, and industrial markets.

The IDT709269 family delivers synchronous dual-port SRAMs optimized for deterministic, low-latency shared memory in real-time embedded systems-emphasizing industrial reliability, pin-compatible scalability, and seamless integration with legacy 5 V logic.

FAQ

What is the memory capacity and organization of the 709269S15PF8?

The 709269S15PF8 provides 16K × 16-bit (256 Kbit) of true dual-port static RAM. Unlike the 709279 variant, the 709269 uses only 14 address bits (A0–A13), with A14 designated as No Connect. This configuration directly addresses 16,384 locations, each storing 16 bits of data accessible simultaneously from left and right ports.

Does the 709269S15PF8 support both pipelined and flow-through output modes?

Yes, the 709269S15PF8 supports both output modes via the FT/PIPEL and FT/PIPER pins. When pulled low (VIL), it operates in flow-through mode with zero-cycle output latency; when pulled high (VIH), it enters pipelined mode with one-cycle latency and faster 15 ns clock-to-data timing. Each port can be independently configured, allowing mixed-mode system integration.

What is the operating temperature range certified for the 709269S15PF8?

709269S15PF8 is specified for industrial temperature operation from –40°C to +85°C. This rating is explicitly confirmed in the datasheet's "Recommended Operating Temperature and Supply Voltage" table and applies to the "S" speed grade (15 ns) in the PF package. It is not rated for commercial-only grades (0°C to +70°C) in this variant.

How does the dual chip enable scheme work on the 709269S15PF8?

The 709269S15PF8 implements two independent chip enables per port (CE0X and CE1X, where X = L or R). A port is enabled only when CE0X = L and CE1X = H. This dual-enable structure allows precise per-port power gating and enables depth expansion of multiple devices without external logic-each additional device uses unique CE0/CE1 combinations to decode its address space.

Is the 709269S15PF8 pin-compatible with other members of the IDT709269/709279 family?

Yes, the 709269S15PF8 shares identical pinout and package (100-pin TQFP) with all IDT709269 and IDT709279 variants in the PF package, including speed grades 9 ns, 12 ns, and 15 ns. However, functional differences exist: 709269 has A14 as NC and 16K × 16 organization, whereas 709279 supports 32K × 16 with A14 functional-so pin compatibility does not imply full functional interchangeability.