Renesas 71V416L10PHG8

Overview

71V416L10PHG8 from Renesas Electronics is a 4-Mbit (256K × 16) low-power, high-speed CMOS static RAM with 10 ns access time, single 3.3 V supply operation, LVTTL-compatible I/O, and JEDEC-standard center power/ground pinout for noise reduction. It supports byte-wide and word-wide read/write operations in industrial temperature range (–40°C to +85°C) and is used in real-time embedded control buffers and legacy system memory upgrades.

For engineers reviewing the 71V416L10PHG8 datasheet, 71V416L10PHG8 pinout, 71V416L10PHG8 application, or 71V416L10PHG8 equivalent, key selection criteria include its 10 ns tAA/tACS timing, dual-byte enable architecture, SOJ-44 package compatibility, and low standby current (10 mA typical at full static standby).

Technical Context

The 71V416L10PHG8 implements fully static asynchronous circuitry-no clocks or refresh required-and uses separate high-byte (BHE) and low-byte (BLE) enable inputs to support 8-bit sub-word accesses without external logic. Its address decoding includes row/column architecture over A0–A17, with all control signals (CS, OE, WE, BHE, BLE) active-low and LVTTL-compatible.

Timing is governed by three independent control paths: chip-select–driven (tACS), output-enable–driven (tOE), and byte-enable–driven (tBE), each guaranteeing ≤10 ns access under commercial/industrial conditions. Output drivers feature fast turn-on (tOLZ = 0 ns) and controlled turn-off (tOHZ = 5 ns), enabling tight bus timing in multiplexed memory systems.

Key Specifications

Pinout & Package

71V416L10PHG8 is housed in a 44-pin, 400-mil plastic SOJ (PHG44) package with JEDEC-standard center power/ground pinout to minimize simultaneous switching noise. Pin 1 is located at the top-left corner when the notch faces upward.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 71V416L10PHG8, CY62148EV30LL-10ZSXIT offers identical timing and packaging but diverges in DC leakage specs and thermal derating curves, while AS6C4008-10TIN matches the SOJ-44 mechanical interface exactly but omits advanced BGA variants and has marginally slower output disable timing.

Availability

71V416L10PHG8 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, legacy network router caches, medical imaging frame stores, and avionics display controller buffers requiring stable component supply across extended product lifecycles.

Supply support for 71V416L10PHG8 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

Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The 71V416L10PHG8 belongs to Renesas' legacy high-speed SRAM product line, designed specifically for cost-sensitive, noise-immune, and thermally demanding embedded memory applications requiring pin-compatible upgrade paths from older 5 V families.

FAQ

What is the maximum clock frequency supported by the 71V416L10PHG8?

The 71V416L10PHG8 is a fully static RAM and does not use a clock signal. Its performance is defined by timing parameters such as tRC (10 ns read cycle time) and tWC (10 ns write cycle time), enabling reliable interface with microcontrollers and ASICs operating up to 100 MHz in burst-read configurations. No external clock is required for operation.

Does the 71V416L10PHG8 support both byte and word writes?

Yes, the 71V416L10PHG8 supports independent byte and word writes using its dedicated BHE (high-byte enable) and BLE (low-byte enable) inputs. When only BHE is asserted, I/O8–I/O15 are written; when only BLE is asserted, I/O0–I/O7 are written; asserting both enables full 16-bit word writes - all without external logic or address decoding.

Is the 71V416L10PHG8 RoHS compliant and halogen-free?

Yes, the 71V416L10PHG8 is a green part per Renesas' ordering nomenclature ('G' suffix), meaning it meets RoHS Directive 2011/65/EU requirements and is halogen-free. The '8' suffix indicates tape-and-reel packaging, consistent with automated SMT assembly standards.

Can the 71V416L10PHG8 be used with 5 V logic systems?

No, the 71V416L10PHG8 is strictly a 3.3 V device with LVTTL-compatible I/O thresholds (VIH min = 2.0 V, VIL max = 0.8 V). Direct connection to 5 V logic may damage the part. Level translation is required for interoperability with 5 V microcontrollers or FPGAs.

What is the difference between the 'S' and 'L' speed grades in the 71V416 family?

The 'S' grade (e.g., 71V416S10PHG8) denotes standard power consumption, while the 'L' grade (e.g., 71V416L10PHG8) specifies lower power - particularly evident in standby current: ISB1 is 20 mA max for 'S' versus 10 mA max for 'L'. Both share identical 10 ns timing specs and pinout.