CC1021RSSR Equivalent & Substitute Parts

Part Overview

The CC1021RSSR is an RF transceiver IC designed for General ISM band applications below 1GHz, manufactured by Texas Instruments. This device operates across 402MHz to 470MHz and 804MHz to 960MHz frequency ranges with FSK, GFSK, and OOK modulation support. The part is currently Active in product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical performance, package compatibility, and operational parameters align within the specified frequency and modulation requirements.

Substiute Parts

CC1021RSSR

Texas InstrumentsIn Stock: 3972CC1021RSSR Datasheet

Current PartRFQ

CC1121RHBR

Texas InstrumentsIn Stock: 26475CC1121RHBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CC1121RHBR qualifies as a substitute based on the following alignment criteria:

Manufacturer Continuity: Both parts are manufactured by Texas Instruments, ensuring consistent design philosophy and support infrastructure.

RF Family Alignment: Both devices operate within the General ISM < 1GHz standard, supporting overlapping frequency bands within the 410MHz to 480MHz and 820MHz to 960MHz ranges.

Modulation Compatibility: The CC1121RHBR supports 2FSK, 2GFSK, 4FSK, 4GFSK, MSK, and OOK modulation modes, which include the FSK, GFSK, and OOK modes required by the CC1021RSSR.

Package Compatibility: Both parts use 32-pin VQFN packages with exposed pads in surface mount configuration, enabling direct PCB layout compatibility.

Voltage Supply Range: The CC1121RHBR supply range (2V ~ 3.6V) encompasses the CC1021RSSR requirement (2.3V ~ 3.6V).

Operating Temperature: Both parts operate across -40°C to 85°C, matching thermal specifications.

Compliance Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

Regulatory Compliance: Both CC1021RSSR and CC1121RHBR maintain Active product status with ROHS3 compliance and REACH unaffected designation, satisfying regulatory requirements for equivalent component selection.

Supply Chain Continuity: The CC1121RHBR is available with significantly higher inventory (26,400 pcs) compared to CC1021RSSR (3,903 pcs), supporting long-term supply chain stability.

Design Flexibility: The CC1121RHBR incorporates an integrated MCU with 4kB ROM and 256B RAM, plus extended GPIO (4 pins versus 1 pin), providing additional design flexibility for applications requiring on-chip processing capabilities.

Performance Headroom: The CC1121RHBR delivers higher output power (16dBm versus 10dBm), improved sensitivity (-120dBm versus -109dBm), and higher maximum data rate (200kbps versus 153.6kBaud), offering performance margin for demanding applications.

Frequency Coverage: The CC1121RHBR extends frequency support to 164MHz and 192MHz bands, enabling broader application scope while maintaining full compatibility with the CC1021RSSR operating bands.

Frequently Asked Questions (FAQ)

Q: Can CC1121RHBR directly replace CC1021RSSR in existing designs?

A: Direct PCB-level replacement is possible due to identical 32-pin VQFN package geometry and exposed pad configuration. However, firmware and application code must be evaluated for compatibility with the integrated MCU architecture of the CC1121RHBR, as the CC1021RSSR is a transceiver-only device.

Q: What are the key electrical differences between these parts?

A: The CC1121RHBR provides higher output power (16dBm versus 10dBm), improved receiver sensitivity (-120dBm versus -109dBm), and higher data rate capability (200kbps versus 153.6kBaud). Supply voltage minimum is lower (2V versus 2.3V). Current consumption during transmission is higher (26mA ~ 54mA versus 12.3mA ~ 27.1mA).

Q: Are the frequency bands fully compatible?

A: The CC1121RHBR covers all frequency bands of the CC1021RSSR (410MHz ~ 480MHz and 820MHz ~ 960MHz) plus additional lower frequency bands (164MHz ~ 192MHz and 274MHz ~ 320MHz). Applications using only the overlapping bands are fully compatible.

Q: What modulation modes are supported by each part?

A: The CC1021RSSR supports FSK, GFSK, and OOK modulation. The CC1121RHBR supports 2FSK, 2GFSK, 4FSK, 4GFSK, MSK, and OOK. All CC1021RSSR modulation modes are included in the CC1121RHBR feature set.

Q: Are there packaging differences that affect assembly?

A: Both parts use 32-pin VQFN surface mount packages with exposed pads. The CC1021RSSR uses a 7x7mm package while the CC1121RHBR uses a 5x5mm package. PCB footprints differ and must be verified for compatibility with existing designs.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant and REACH unaffected. Both maintain Active product status with identical operating temperature ranges (-40°C to 85°C) and moisture sensitivity levels (MSL 3, 168 hours).