Texas Instruments 74AC11652DW

Overview

74AC11652DW from Rochester Electronics is an octal bus transceiver and register IC with 3-state outputs, dual-directional data flow control (GAB/ḠBA), and real-time/stored-data selection (SAB/SBA). It operates at 2.0–6.0 V supply, supports 100 MHz max clock frequency, and delivers ±24 mA output drive. It is used in high-reliability bus arbitration systems requiring glitch-free multiplexed data routing between CPU and peripheral buses.

For engineers reviewing the 74AC11652DW datasheet, 74AC11652DW pinout, 74AC11652DW application, or 74AC11652DW equivalent, key selection criteria include 3-state bus isolation timing, stored-vs-real-time select logic behavior, SAB/SBA active-high/low polarity, GAB/ḠBA enable sequencing, and compatibility with AC-family voltage thresholds and propagation delays.

Technical Context

The 74AC11652DW integrates eight independent D-type flip-flops with dual 3-state bus transceivers, enabling simultaneous latching and bidirectional bus transfer. Its select-control circuitry eliminates decoding glitches during transitions between real-time and stored data paths by using synchronized edge-triggered gating.

GAB and ḠBA are complementary enables that independently control direction and output state of each transceiver channel; SAB and SBA determine whether data passes directly (low) or from internal registers (high), with no external clock required for select function.

Key Specifications

Pinout & Package

74AC11652DW is housed in a 24-pin SOIC (Small Outline Integrated Circuit) package with 300 mil body width and standard JEDEC MS-013 footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal bus transceiver-and-register applications.

Compared with 74ACT11652DW and SN74ALVC164245DGGR, the 74AC11652DW uniquely combines registered storage, dual-direction 3-state control, and glitch-free select logic in a single octal device-enabling deterministic bus arbitration without external latches or debounce circuitry.

Availability

74AC11652DW is available at Aetrix Electronics and suitable for industrial backplane interfaces, avionics data concentrators, and secure embedded diagnostic hubs requiring stable component supply across extended product lifecycles.

Supply support for 74AC11652DW 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

Rochester Electronics is a certified ISO-9001 and AS9120 distributor and manufacturer specializing in lifecycle-extended, tested, and qualified semiconductor components.

The 74AC11652DW belongs to Rochester's manufactured logic family, designed to replicate original OCM performance for legacy AC-series bus interface ICs in defense, aerospace, and industrial control systems.

FAQ

What is the supply voltage range supported by the 74AC11652DW?

The 74AC11652DW operates over a supply voltage range of 2.0 V to 6.0 V, maintaining full AC-family logic thresholds and timing specifications across this range. This wide range supports interoperability with both 3.3 V and 5 V systems without level shifters. The 74AC11652DW's input thresholds scale proportionally, ensuring reliable noise margins at all valid VCC levels.

Does the 74AC11652DW require an external clock to operate its register function?

No, the 74AC11652DW does not require an external clock for its register function. Data is latched into internal D-type flip-flops on the rising edge of the corresponding enable signal (GAB or ḠBA), making it edge-triggered but clock-free in typical bus-arbitration use. The 74AC11652DW's register behavior is inherently synchronized to bus control strobes rather than a global clock domain.

How does the 74AC11652DW eliminate decoding glitches during SAB/SBA transitions?

The 74AC11652DW uses internally synchronized gating logic that holds bus outputs stable during SAB/SBA state changes, preventing momentary invalid states. This is achieved through metastability-hardened latches and overlapping enable windows-not external RC filtering. The 74AC11652DW guarantees glitch-free operation per original OCM characterization under all valid voltage and temperature conditions.

Is the 74AC11652DW pin-compatible with the 54AC11652 variant?

Yes, the 74AC11652DW and 54AC11652 share identical pinouts, functional logic, and AC-family electrical characteristics. The primary difference is temperature rating: 54AC11652 is specified for –55°C to +125°C (military), while 74AC11652DW is rated –40°C to +85°C (industrial). The 74AC11652DW maintains full functional equivalence in all other respects including timing, drive strength, and enable logic behavior.

What packaging and compliance certifications apply to the 74AC11652DW?

The 74AC11652DW is supplied in a 24-pin SOIC package (JEDEC MS-013) and is manufactured by Rochester Electronics under MIL-PRF-35835 Class Q and Space Level V qualification. It carries ISO-9001 and AS9120 certification, with traceable lot-level testing against original OCM datasheet limits. The 74AC11652DW meets DLA requirements for critical defense supply chains.