DSPB56374AE - 24-bit 150MHz Audio DSP, 52-LQFP | NXP
MPN: DSPB56374AE ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.2 | $252.00 |
| 100 | $22.1 | $2,210.00 |
| 500 | $19.85 | $9,925.00 |
| 1,000 | $18.4 | $18,400.00 |
DSPB56374AE Overview
A Digital Signal Processor (DSP) is a specialized microprocessor whose architecture is optimized for the numeric-intensive workloads of real-time signal processing - multiply-accumulate (MAC) operations, sample-rate conversion, and audio codec interfacing - rather than the control-flow tasks handled by general-purpose MCUs. Within the broader taxonomy, the DSP56374 sits under: digital signal processor -> programmable DSP -> embedded audio processor -> NXP/Freescale 56300 family. The 56000 family is one of NXP's flagship high-performance programmable audio DSP lineages, descended from the Motorola DSP56000 series.
The DSP56374AE features a 24-bit data path, an internal 150 MHz core clock producing up to 150 MIPS, 3.3 V I/O, and a hardware-rich audio peripheral set including serial audio interfaces and timers. It is built on high-density CMOS, targets audio decode/encode, sample-rate conversion, and effects processing, and is commonly deployed in professional and consumer audio equipment.
Typical applications include AV receivers, soundbars, automotive head units, mixing consoles, and multi-channel audio decoders. The 52-LQFP footprint allows integration on standard audio-class PCBs without BGA reflow complexity, which simplifies manufacturing.
When designing with this DSP, ensure the JTAG/OnCE debug port is accessible for in-system debug, and observe the 3.3 V I/O supply decoupling guidelines from the manufacturer datasheet. Note that some reorders from independent distributors should be vetted for authenticity, as this part has been on the market for multiple product cycles.
This page synthesizes distributor pricing, parametric alternatives, and practical design guidance drawn from the NXP/Freescale datasheet and major distributors - a level of cross-reference context not found in the standalone datasheet PDF.
Drop-in alternatives for DSPB56374AE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPB56374AE (same form factor and footprint) — differing in Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPB56374AF
✅ Drop-In✓ In Stock
$6.85 / Unit
View Datasheet →DSPB56371AE
✅ Drop-In📋 Reference alternative (not in catalog)
DSP56374AE
✅ Drop-In📋 Reference alternative (not in catalog)
DSPB56321AE
✅ Drop-In📋 Reference alternative (not in catalog)
DSPB56374AE Specifications
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Product Type | Audio Digital Signal Processor (DSP) |
| DSP Core | Freescale/NXP 56000 family (DSP56300) |
| Data Bus Width | 24 bit |
| Maximum Core Clock | 150 MHz |
| Performance | 150 MIPS |
| I/O Supply Voltage | 3.3 V |
| Process Technology | High-density CMOS |
| Package | 52-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Terminal Form | GULL WING |
| Number of Terminals | 52 |
| Package Code | LQFP |
| Package Shape | SQUARE |
| RoHS Status | Compliant |
| Lead-Free | Yes (PB-FREE per Mouser listing) |
DSPB56374AE square Pin Configuration Guide
Pin configuration for DSPB56374AE (square package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for DSPB56374AE.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPB56374AE is suitable for 6 applications: AV Receiver / Surround-Sound Decoder, Automotive Head Unit Audio DSP, Soundbar / Multi-Channel Audio Processor, Professional Audio Effects Processor, Broadcast Audio Mixing Console, Multi-Channel Audio Decoder Board.
AV Receiver / Surround-Sound Decoder
The DSPB56374AE's 24-bit precision and 150 MIPS throughput make it a natural fit for multi-channel surround decoding in home AV receivers. Real-time Dolby Digital and DTS decode pipelines demand hundreds of MAC operations per sample per channel; this part delivers them deterministically. The 52-LQFP package simplifies PCB layout on a chassis that already hosts analog audio stages, heat-sinks, and HDMI switching.
Recommended
Automotive Head Unit Audio DSP
In automotive head units, the DSPB56374AE handles cabin equalization, time alignment, and active noise cancellation stages. The 3.3 V I/O matches modern automotive SoC platforms, and the 24-bit data path preserves high dynamic range demanded by premium in-car audio. The 52-LQFP footprint tolerates the automotive thermal and vibration environment with appropriate PCB reinforcement.
Recommended
Soundbar / Multi-Channel Audio Processor
For soundbars that virtualize surround from a 2-channel speaker array, the DSPB56374AE runs psychoacoustic HRTF and crosstalk-cancellation algorithms at low latency. At 150 MHz the device can sustain multi-band processing for several simultaneous streams without buffer underruns. The 24-bit arithmetic keeps quantization noise below audible thresholds even at full decode load.
Recommended
Professional Audio Effects Processor
In rack-mount studio effects units (reverb, delay, modulation), the DSPB56374AE's sustained 150 MIPS enables long impulse-response convolution and high-quality chorus/modulation. Studio-grade 24-bit resolution throughout the chain keeps the silent floor below -100 dB. The 52-LQFP package is favored over BGA in this segment because field-replaceability of parts during repair is straightforward.
Recommended
Broadcast Audio Mixing Console
Broadcast mixers use the DSPB56374AE for per-channel dynamics (compression, limiting, expansion) and bus summing. The deterministic latency of the 56000 core simplifies channel-to-bus alignment, and the rich serial audio interface supports TDM streams to companion codecs. Multiple DSPB56374AE devices can be paralleled for larger consoles via shared audio buses.
Recommended
Multi-Channel Audio Decoder Board
The DSPB56374AE is widely deployed as the central decoder in outboard HDMI-audio extractors and multi-channel DAC boards. It accepts compressed bitstreams (Dolby Digital, DTS, AAC) over serial digital audio interfaces and outputs decoded PCM via its on-chip audio peripherals. 24-bit precision preserves the studio-grade audio path expected in prosumer extractors.
Recommended
Recommended Products Summary
Engineering reference data for DSPB56374AE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPB56374AF | DSPB56371AE | DSP56374AE | DSPB56321AE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 52-LQFP (10x10) | 52-LQFP (10x10) - same | 52-LQFP (10x10) - same | 52-LQFP (10x10) - same | 52-LQFP (10x10) - same |
| DSP Core | DSP56300 (56000 family) | DSP56300 (56000 family) | DSP56300 (56000 family) | DSP56300 (56000 family) | DSP56300 (56000 family) |
| Data Bus Width | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit |
| I/O Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| RoHS / Lead-Free | Compliant / Yes | Compliant / Yes | Compliant / Yes | Compliant / Yes | Compliant / Yes |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
Key Differentiators
- Dedicated 56000-family DSP core (vs MC56F8037VLH (56800E DSC))
- Higher throughput than lower-clocked DSP56321 (vs DSPB56321AE)
- Mature audio peripheral set (vs Modern ARM Cortex-A based audio MCUs)
Design Notes
Estimated: the DSPB56374AE draws both core and I/O current from 3.3 V rails. Use a low-noise LDO for the analog sections and a switching regulator for the digital core, separated by ferrite beads to prevent digital switching noise from coupling into sensitive PLL/VCO references. Add 10 uF bulk plus 100 nF high-frequency decoupling capacitors placed within 5 mm of every supply pin on the package, with traces kept short and wide.
Independent-broker inventory of the DSPB56374AE requires verification of factory traceability and date-code consistency. Counterfeit or remarked parts are a known industry issue for this device family. Always procure through authorized distributors (DigiKey, Mouser, Arrow) or require full documentation including factory lot codes and traceability certificates when buying from brokers.
Estimated: the 52-LQFP package has a theta_JA in the range of 40-50 C/W (typical for 10x10 mm LQFP without exposed pad). At typical audio workloads the DSPB56374AE dissipates well under 1 W, so no heatsink is required. However, ensure at least 1 square inch of copper on the inner PCB layer connected to GND pins to provide thermal relief and a stable ground reference for the audio path.
Compliance Information
RoHS-compliant per Mouser PB-FREE label and DigiKey listing. AEC-Q100 not applicable - this is a commercial-grade DSP, not automotive-qualified.
