Texas Instruments SN74V293-10GGM

Overview

SN74V293-10GGM from Texas Instruments is a 65536 × 18 / 131072 × 9, 3.3-V CMOS first-in, first-out (FIFO) memory with independent read/write clocks, user-selectable ×9/×18 bus sizing, and FWFT/standard timing modes. It delivers 166-MHz operation, 6-ns read/write cycle time, and zero-latency retransmit for high-throughput buffering in DSP interfacing and telecom data pipelines.

For engineers reviewing the SN74V293-10GGM datasheet, SN74V293-10GGM pinout, SN74V293-10GGM application, or SN74V293-10GGM equivalent, key selection criteria include its dual-clock asynchronous operation, programmable almost-empty/almost-full flags with eight default offsets, big/little-endian byte formatting, and 5-V-tolerant inputs enabling glueless interface with 'C6x DSPs.

Technical Context

This FIFO implements a high-speed submicron CMOS architecture with separate read and write pointer logic, configurable RAM array (65536 × 18 or 131072 × 9), and flag generation circuitry supporting EF/OR, FF/IR, HF, PAE, and PAF outputs. Its master reset (MRS) configures all operational modes-including timing mode, bus width, endian format, and retransmit latency-via dedicated control pins.

Flag behavior is context-aware: in FWFT mode, OR indicates output readiness without REN assertion for the first word; in standard mode, EF signals emptiness and requires REN for all reads. PAE/PAF operate synchronously or asynchronously based on PFM pin state during MRS, and their thresholds are loaded via serial (FWFT/SI + SEN) or parallel (Dn + WEN) methods.

Key Specifications

Pinout & Package

SN74V293-10GGM is packaged in a 100-pin Ball Grid Array (BGA), GGM package, with 18-bit data I/O, dual clock domains (WCLK/RCLK), and dedicated flag/control pins including MRS, PRS, RT, FWFT/SI, FSEL0/FSEL1, PFM, and BE.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2105L10PFI and NB3N502DG, SN74V293-10GGM provides the largest depth (65536 × 18), fastest 6-ns cycle time, and unique FWFT + zero-latency retransmit features-making it optimal for high-throughput, low-jitter, retry-sensitive data pipelines in video and telecom infrastructure.

Availability

SN74V293-10GGM is available at Aetrix Electronics and suitable for video frame buffering, DSP interfacing, and telecom packet buffering requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for SN74V293-10GGM 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 logic solutions, with decades of experience in high-speed interface and memory products.

The SN74V293-10GGM belongs to TI's high-speed FIFO memory product line, designed specifically for deep, low-latency data buffering in network, video, telecommunications, and DSP-based systems demanding asynchronous clock domain bridging.

FAQ

What is the maximum operating frequency of the SN74V293-10GGM?

The SN74V293-10GGM supports up to 166 MHz on both read and write clocks, enabling real-time data throughput in high-bandwidth applications such as video streaming and telecom packet processing. This frequency rating is validated under 3.3-V supply and specified conditions in the SCAS669D datasheet, with 6-ns read/write cycle time confirming timing compliance at this rate.

Does the SN74V293-10GGM support both FWFT and standard timing modes?

Yes, the SN74V293-10GGM supports both modes. The FWFT/SI pin determines timing mode during master reset: high selects first-word fall-through (OR/IR flags), allowing immediate access to the first written word after three RCLK edges; low selects standard mode (EF/FF flags), requiring REN assertion for all reads. Both modes remain fully functional post-configuration.

How is bus width configured on the SN74V293-10GGM?

Bus width is set independently for input and output ports using IW (input width) and OW (output width) pins during master reset. Table 1 in the SCAS669D datasheet defines four combinations: ×18/×18, ×18/×9, ×9/×18, and ×9/×9. For example, setting IW = L and OW = H configures a 18-bit write port and 9-bit read port-enabling seamless data width conversion without external logic.

What is the function of the RM pin on the SN74V293-10GGM?

The RM (retransmit latency mode) pin selects zero- or normal-latency retransmit behavior during master reset. A low on RM enables zero-latency mode: the first retransmitted word appears on Q outputs synchronized to the same RCLK edge that samples RT = L. This eliminates read pipeline delay in error recovery and protocol retry scenarios, a capability confirmed in Section 5 of the SCAS669D datasheet.

Can the SN74V293-10GGM be used with 5-V control signals?

Yes, the SN74V293-10GGM features 5-V-tolerant inputs on all control pins-including WEN, REN, MRS, PRS, RT, FWFT/SI, and flag select lines-while operating from a 3.3-V supply. This allows direct interfacing with legacy 5-V logic families (e.g., TTL, 74HC) without level-shifting components, simplifying system design and reducing BOM cost.