Texas Instruments SN74V283-10PZA

Overview

SN74V283-10PZA from Texas Instruments is a 3.3-V CMOS, 32768 × 18 / 65536 × 9 synchronous FIFO memory with independent read/write clocks, 166-MHz operation, 6-ns read/write cycle time, and user-selectable ×9/×18 bus sizing - deployed in high-throughput network buffering and DSP interfacing applications.

For engineers reviewing the SN74V283-10PZA datasheet, SN74V283-10PZA pinout, SN74V283-10PZA application, or SN74V283-10PZA equivalent, key selection considerations include FWFT vs. standard timing mode configuration, programmable almost-empty/full flag offsets, big/little-endian data formatting, zero-latency retransmit capability, and 5-V-tolerant input compatibility with legacy logic interfaces.

Technical Context

This FIFO implements dual-clock architecture with fully asynchronous RCLK and WCLK domains (0–166 MHz), enabling simultaneous read/write operations without clock domain synchronization logic. It supports four bus-matching configurations (×9/×9, ×9/×18, ×18/×9, ×18/×18) via IW/OW pins during master reset.

Flag logic includes EF/OR, FF/IR, HF, PAE, and PAF outputs with configurable timing modes (synchronous/asynchronous), programmable thresholds (eight default offsets or serial/parallel loading), and FWFT-mode first-word fall-through latency of three RCLK cycles - all initialized and locked during MRS assertion.

Key Specifications

Pinout & Package

SN74V283-10PZA is housed in an 80-pin Thin Quad Flat Pack (TQFP) package with exposed thermal pad (PZA suffix). Pin functions are defined per TI SCAS669D datasheet Rev. February 2003.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V285L10PF and NB3N502MNR2G, SN74V283-10PZA uniquely combines 5-V-tolerant inputs, FWFT timing, zero-latency retransmit, and full flag programmability - making it optimal for high-flexibility, mixed-voltage, real-time buffering where deterministic latency and configuration adaptability are critical.

Availability

SN74V283-10PZA is available at Aetrix Electronics and suitable for network packet buffering, DSP data streaming, video frame synchronization, telecom line card buffering, and high-speed protocol bridging requiring stable component supply and long-term industrial availability.

Supply support for SN74V283-10PZA 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal technologies with over 50 years of innovation in high-performance logic and memory solutions.

The SN74V283-10PZA belongs to TI's high-speed FIFO product line, engineered specifically for clock-domain isolation, burst-mode data absorption, and glueless interfacing with TI C6000 DSPs in telecom, video, and networking infrastructure.

FAQ

What memory organization does SN74V283-10PZA support?

SN74V283-10PZA supports two memory organizations: 32768 × 18 (full-width mode) or 65536 × 9 (half-width mode), selected via IW and OW pin states during master reset. This dual configuration enables flexible bus-matching between ×18 upstream peripherals and ×9 downstream processors - a key advantage in heterogeneous system interconnects.

Does SN74V283-10PZA support 5-V logic inputs?

Yes, SN74V283-10PZA features 5-V-tolerant inputs, allowing direct interface with legacy 5-V control signals (e.g., WEN, REN, MRS) without external level shifters. This simplifies integration in mixed-voltage systems and reduces board space - a verified specification confirmed in the SCAS669D datasheet Section 7.

How is first-word latency handled in SN74V283-10PZA?

SN74V283-10PZA offers two first-word latency modes: standard mode (first word appears only after explicit REN + RCLK) and FWFT mode (first word appears on Q outputs after exactly three RCLK edges, no REN required). The mode is selected by FWFT/SI pin state during master reset - a hardware-configured, deterministic behavior.

Can SN74V283-10PZA be used in zero-latency retransmit applications?

Yes, SN74V283-10PZA supports zero-latency retransmit when RM is held low during master reset. In this mode, asserting RT on a rising RCLK edge places the first retransmitted word onto Q outputs synchronously with that same RCLK edge - enabling immediate frame replay in error-correction protocols without added clock-cycle delay.

What packaging and thermal characteristics apply to SN74V283-10PZA?

SN74V283-10PZA uses the PZA package: an 80-pin TQFP with exposed thermal pad, rated for industrial temperature range (–40°C to +85°C). The package supports standard reflow profiles and provides adequate thermal dissipation for continuous 166-MHz operation - documented in TI's SCAS669D Package Mechanical Data section.