My Inquiry
My Account
NXP Semiconductors MC33696FJER2
- Part No.:
- MC33696FJER2
- Manufacturer:
- NXP Semiconductors
- Category:
- RF Transceiver ICs
- Package:
- 32-LQFP
- Datasheet:
-
MC33696FJER2.pdf
- Description:
- IC RF TXRX ISM<1GHZ 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,234
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33696FJER2 from Freescale Semiconductor is a highly integrated UHF transceiver IC for low-voltage ISM-band data transfer, supporting OOK/FSK modulation across 304–915 MHz bands, delivering –106.5 dBm RX sensitivity and up to +7.25 dBm TX output power in an LQFP32 package - deployed in remote keyless entry (RKE), TPMS, and industrial telemetry systems.
For engineers reviewing the MC33696FJER2 datasheet, MC33696FJER2 pinout, MC33696FJER2 application, or MC33696FJER2 equivalent, key selection considerations include its dual-register-bank configuration switching, strobe-oscillator–enabled ultra-low-power receive mode (≤1 mA at 1/10 duty cycle), programmable PLL with <30 µs toggle time, and SPI-managed Manchester decoding capability.
Technical Context
The MC33696FJER2 implements a superheterodyne receiver architecture with high-side injection I/Q mixer, integrated polyphase image-reject filter, and 380 kHz IF bandwidth tuned via AFC referenced to the crystal oscillator. Its fractional-N PLL synthesizer drives a VCO operating at 2× or 4× RF frequency to generate precise LO signals.
Transmit functionality uses a single-ended PA with programmable output power control and out-of-lock detection to suppress spurious emissions. The embedded data manager supports clock recovery and Manchester decoding at up to 20 kbps, while the strobe oscillator enables autonomous periodic wake-up without MCU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency Bands | 304, 315, 426, 434, 868, and 915 MHz ISM bands - enables global regulatory compliance across automotive and industrial wireless links |
| RX Sensitivity | –106.5 dBm (OOK), down to –108 dBm (FSK @ 2.4 kbps) - ensures reliable reception in low-SNR environments like vehicle door modules |
| TX Output Power | +7.25 dBm max, programmable in 4 steps - balances range and EMI control for compact PCB layouts |
| Data Rate | Up to 20 kbps with Manchester coding - supports secure RKE frame transmission within sub-100ms latency budgets |
| Supply Voltage Range | 2.1–3.6 V or 5 V on VCCIN - accommodates both coin-cell (3 V) and main-board (5 V) power domains |
| Current Consumption | 10.3 mA (RX active), ≤1 mA (strobe RX @ 1/10 ratio), 24 µA (off) - extends battery life in intermittent-sensing applications |
| PLL Frequency Step | 6 kHz resolution - enables fine channel spacing for multi-channel hopping in crowded ISM bands |
Pinout & Package
LQFP32 package (7 mm × 7 mm, 0.8 mm pitch), thermally enhanced with exposed pad; designed for reflow-compatible assembly and RF isolation via dedicated analog/digital ground separation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFIN | RF input | Connects to antenna or external LNA; requires 50 Ω matching network for optimal noise figure |
| RFOUT | RF output | Drives external PA or antenna directly; limited to ≤3.6 V bias to prevent damage |
| VCC2RF / VCC2VCO | Analog/RF supply rails | 2.1–2.7 V regulated supplies for LNA/VCO; must be decoupled with 100 nF capacitor to GNDLNA/GNDPA |
| STROBE | Wake-up control | Accepts external timing capacitor or MCU GPIO; enables autonomous low-duty-cycle RX operation |
| SWITCH | RF switch control | Logic-level output toggling between RX/TX states - used to drive external T/R switch or enable LNA/PA bias |
| MOSI / MISO / SCLK / SEB / CONFB | SPI interface | Standard 4-wire SPI (CPOL=0, CPHA=1); CONFB forces configuration mode regardless of state machine |
| RSSIOUT / RSSIC | Analog RSSI interface | RSSIOUT provides logarithmic voltage proportional to signal strength; RSSIC selects analog/digital RSSI mode |
| XTALIN / XTALOUT | Crystal oscillator terminals | Supports fundamental-mode crystals (e.g., 16.967 MHz for 315 MHz band); internal load capacitance optimized |
Key Features
| Feature | Design Value |
|---|---|
| Dual register bank switching | Enables instant A/B configuration swap (frequency, data rate, modulation) without MCU involvement - critical for fast channel-hopping or multi-protocol support |
| Embedded Manchester decoder | Performs clock recovery, ID/header recognition, and EOM detection internally - reduces MCU firmware overhead and interrupt latency in RKE systems |
| Strobe oscillator with off-counter | Autonomous periodic wake-up using external capacitor; configurable ON/OFF timing (RON/ROFF registers) - eliminates need for external RTC or timer |
| Image-reject I/Q mixer + polyphase filter | Integrated analog image cancellation achieves >40 dB image rejection - avoids discrete filter components and layout sensitivity |
| Programmable LNA gain (4 steps) | Adjusts front-end amplification to optimize dynamic range vs. linearity trade-off - prevents saturation near strong interferers |
| Out-of-lock transmission inhibit | Hardware-enforced TX disable when PLL loses lock - guarantees spectral purity and regulatory compliance without software monitoring |
Applications
| Automotive Remote Keyless Entry (RKE) | Tire Pressure Monitoring System (TPMS) |
|---|---|
Use Scenario: Bidirectional communication between vehicle fob and body control module for door lock/unlock commands. IC Role / Device Role / Timing Role: UHF transceiver handling OOK-modulated 315/434 MHz frames with embedded Manchester decoding and low-latency wakeup. Use Value: Dual-register-bank switching allows rapid transition between fob-initiated and vehicle-polling modes; strobe RX cuts average current to <10 µA for 10-year coin-cell life. |
Use Scenario: Wireless transmission of tire temperature and pressure data from rotating wheel sensors to vehicle receiver. IC Role / Device Role / Timing Role: Low-power UHF transceiver operating in 315/434 MHz bands with robust FSK demodulation and AGC-stabilized sensitivity. Use Value: –108 dBm sensitivity at 2.4 kbps ensures reliable reception despite wheel well shielding; programmable TX power adapts to mounting position and battery voltage. |
| Industrial Sensor Telemetry | Home Automation Transceivers |
Use Scenario: Battery-powered environmental sensors (temp/humidity/CO₂) transmitting data to gateway every 5–60 minutes. IC Role / Device Role / Timing Role: Ultra-low-power UHF transceiver with autonomous strobe wakeup and embedded data framing. Use Value: 24 µA off-state and 1 mA strobed RX enable >5-year operation on AA batteries; configuration switching supports multi-sensor channel assignment. |
Use Scenario: Two-way communication between smart switches, thermostats, and central hub in 868/915 MHz sub-GHz mesh networks. IC Role / Device Role / Timing Role: Programmable PLL transceiver supporting frequency hopping and multi-data-rate interoperability. Use Value: 6 kHz PLL step size and <30 µs toggle time allow agile channel selection to avoid interference; SPI-managed register banks simplify firmware updates across device variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UHF transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si4362-B1B-FMR | Higher integration (integrated PA/LNA), wider frequency range (142–1050 MHz), lower RX current (8.5 mA), but no embedded Manchester decoder | Requires external MCU for frame parsing; better suited for proprietary protocols with custom encoding | Select when higher TX power (+20 dBm) and broader band coverage outweigh loss of on-chip data manager functionality |
| AX5043-1-TW | Lower power (5.5 mA RX), integrated packet handler, narrower ISM support (315/433/868/915 MHz), no strobe oscillator | Lacks autonomous wake-up; relies on host MCU for scheduling - increases system-level power management complexity | Prefer for cost-sensitive designs where MCU resources are available for timing control and protocol stack execution |
Compared with Si4362-B1B-FMR and AX5043-1-TW, the MC33696FJER2 uniquely combines embedded Manchester decoding, dual-register-bank switching, and hardware strobe oscillator - reducing BOM count and firmware burden in battery-critical RKE and TPMS endpoints.
Availability
MC33696FJER2 is available at Aetrix Electronics and suitable for automotive RKE systems, tire pressure monitoring units, and industrial sensor telemetry requiring stable component supply and long-term lifecycle assurance.
Supply support for MC33696FJER2 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
Freescale Semiconductor (now part of NXP Semiconductors) is a global leader in automotive and industrial microcontrollers and analog ICs, with deep expertise in RF transceiver design for safety-critical wireless systems.
The MC33696 product line was engineered specifically for ultra-low-power, high-reliability UHF data links in automotive security and remote sensing - emphasizing integrated signal processing, autonomous operation, and AEC-Q100 qualified robustness.
FAQ
What is the operating temperature range for MC33696FJER2?
The MC33696FJER2 is rated for –40°C to +85°C ambient operation, as confirmed by Freescale's ordering information table specifying MC33696FJE/R2 for that range. This makes MC33696FJER2 suitable for under-hood automotive applications and industrial environments with wide thermal excursions.
Does MC33696FJER2 support both OOK and FSK modulation?
Yes, MC33696FJER2 supports both OOK and FSK modulation schemes, as explicitly stated in the Features section of the datasheet. FSK is implemented via PLL programming, while OOK uses direct on/off keying of the RF carrier - enabling flexible protocol implementation in MC33696FJER2-based systems.
How does the strobe oscillator function in MC33696FJER2?
The strobe oscillator in MC33696FJER2 is an internal low-frequency oscillator controlled via the STROBE pin and SOE bit. When enabled, it autonomously wakes the receiver at programmable intervals using an external capacitor, allowing MC33696FJER2 to achieve <1 mA average current in receive mode without MCU intervention.
What package type is used for MC33696FJER2?
MC33696FJER2 uses the LQFP32 package (7 mm × 7 mm, 0.8 mm pitch), as indicated in the Ordering Information table and Pin Functions section of the datasheet. This surface-mount package provides robust thermal performance and clear pin separation for analog/digital domain isolation in MC33696FJER2 designs.
Can MC33696FJER2 operate from a 5 V supply?
Yes, MC33696FJER2 supports 5 V operation on the VCCIN pin, as specified in the Power Supply section. In 5 V mode, VCCINOUT supplies regulated 3.6 V to the RFOUT pin, while internal regulators generate 2.1–2.7 V (VCC2OUT) and 1.5 V (VCCDIG2) - ensuring safe biasing across all MC33696FJER2 functional blocks.
MC33696FJER2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- TxRx Only
- RF Family/Standard:
- General ISM < 1GHz
- Protocol:
- -
- Modulation:
- FSK, OOK
- Frequency:
- 290MHz ~ 340MHz, 424MHz ~ 510MHz, 862MHz ~ 1.02GHz
- Data Rate (Max):
- 22.6kbps
- Power - Output:
- 7.25dBm
- Sensitivity:
- -106.5dBm
- Memory Size:
- -
- Serial Interfaces:
- SPI
- GPIO:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Receiving:
- 10.3mA ~ 24mA
- Current - Transmitting:
- 6.1mA ~ 13.5mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-LQFP (5x5)
MC33696FJER2 FAQ
1.How can I place an order for MC33696FJER2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33696FJER2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC33696FJER2 reliable?
The price and inventory of MC33696FJER2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33696FJER2 is usually 5 days.
3.What payment methods are accepted for MC33696FJER2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33696FJER2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33696FJER2?
MC33696FJER2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33696FJER2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC33696FJER2?
For technical support, including MC33696FJER2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33696FJER2 requirements.
6.How does Aetrix verify that MC33696FJER2 is sourced from the original manufacturer or authorized distributors?
All MC33696FJER2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC33696FJER2 meets industry standards.
7.What is the process for return or replacement of MC33696FJER2?
All MC33696FJER2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33696FJER2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC33696FJER2 part is unused and in its original packaging.
Return procedure for MC33696FJER2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33696FJER2 Tags
-
ESP32-D0WD-V3
Espressif Systems
-
ESP8266EX
Espressif Systems
-
ESP32-S3
Espressif Systems
-
NRF24L01P-R7
Nordic Semiconductor ASA
-
NRF24L01P-R
Nordic Semiconductor ASA
-
ESP32-U4WDH
Espressif Systems
-
DA14531-00000OG2
Renesas Electronics Corporation
-
ESP32-C6FH4
Espressif Systems
-
DA14531-00000FX2
Renesas Electronics Corporation
-
NRF24L01P-T
Nordic Semiconductor ASA
-
NRF52810-QCAA-R
Nordic Semiconductor ASA
-
ESP32-S3FN8
Espressif Systems
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
