Texas Instruments SN74V263-6GGM

Overview

SN74V263-6GGM from Texas Instruments is a 3.3-V CMOS first-in, first-out (FIFO) memory with 8192 × 18 or 16384 × 9 configurable depth/width, 166-MHz operation, 6-ns read/write cycle time, and user-selectable ×9/×18 bus sizing - deployed in high-speed data buffering for DSP interfacing, video streaming, and telecom line cards.

For engineers reviewing the SN74V263-6GGM datasheet, SN74V263-6GGM pinout, SN74V263-6GGM application, or SN74V263-6GGM equivalent, key selection criteria include FWFT vs. standard timing mode, big/little-endian byte ordering, zero-latency retransmit capability, and programmable almost-empty/full flag offsets with serial or parallel loading.

Technical Context

The SN74V263-6GGM implements independent synchronous read and write clock domains (RCLK/WCLK), enabling simultaneous full-duplex data flow without external handshaking logic. Its dual-mode flag architecture supports both EF/OR and FF/IR outputs depending on FWFT/SI configuration during master reset.

Bus-matching is controlled by IW and OW pins at master reset, selecting ×9 or ×18 width per port independently; BE pin configures big-endian or little-endian word alignment for cross-width transfers; RM and PFM pins define zero-latency retransmit and synchronous/asynchronous flag timing respectively.

Key Specifications

Pinout & Package

SN74V263-6GGM is packaged in a 100-pin Ball Grid Array (BGA) with GGM suffix, compliant with JEDEC MO-220, 12 mm × 12 mm body, 0.8 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74V263-6GGM, SN74V273-6GGM offers scalable depth with identical features and pin compatibility, while IDT72V263L15PF trades configurability for lower cost and reduced feature set - making SN74V263-6GGM optimal for applications demanding bus-matching agility and deterministic retransmit behavior.

Availability

SN74V263-6GGM is available at Aetrix Electronics and suitable for network packet buffering, DSP interfacing, telecom line card design, and video streaming pipelines requiring stable component supply and long-term obsolescence planning.

Supply support for SN74V263-6GGM 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 leadership in high-speed interface ICs and DSP infrastructure.

The SN74V263-6GGM belongs to TI's high-speed FIFO memory product line, engineered specifically for glueless, low-latency data buffering between asynchronous digital subsystems in communications and multimedia equipment.

FAQ

What memory organization does SN74V263-6GGM support?

SN74V263-6GGM supports two memory organizations selected at master reset: 8192 × 18 (18-bit wide, 8K deep) or 16384 × 9 (9-bit wide, 16K deep). The choice is determined by the states of the IW (input width) and OW (output width) pins during MRS, enabling flexible bus-matching between mismatched source and sink data paths without external logic.

Does SN74V263-6GGM support zero-latency retransmit functionality?

Yes, SN74V263-6GGM supports zero-latency retransmit when the RM pin is held low during master reset. In this mode, the first retransmitted word appears on the Qn outputs at the same rising edge of RCLK that samples RT low - enabling deterministic replay for protocol recovery or metadata insertion without added clock-cycle penalty.

How is bus-width configuration handled on SN74V263-6GGM?

SN74V263-6GGM uses IW and OW pins sampled during master reset to configure input and output port widths independently: low = ×18, high = ×9. This yields four combinations (×18/×18, ×18/×9, ×9/×18, ×9/×9), allowing seamless adaptation to diverse system architectures - for example, ×18 input from a DSP and ×9 output to a serializer - all within a single device.

What is the purpose of the FWFT/SI pin on SN74V263-6GGM?

The FWFT/SI pin serves dual roles: during master reset, its state selects First-Word Fall-Through (high) or standard timing mode (low); after reset, it functions as a serial input for loading PAE and PAF flag offsets. This dual use minimizes pin count while retaining full configurability of timing behavior and programmable flag thresholds.

Can SN74V263-6GGM interface directly with 5-V logic systems?

Yes, SN74V263-6GGM features 5-V-tolerant inputs - all control and data input pins (D0–D17, WEN, REN, MRS, etc.) accept 5-V TTL/CMOS signal levels while operating from a 3.3-V supply. This eliminates the need for external level shifters when interfacing with legacy 5-V peripherals, simplifying design and improving signal integrity.