Texas Instruments SN74CB
SN74CB variants from Texas Instruments
SN74CB Overview
What changes between part numbers, and what to check before you lock the BOM — Buffers, Drivers, Receivers and Transceivers.
Key Features
- Footprint / package: TSSOP, VQFN, TFSOP, 48-BSSOP (0.295", 7.50mm Width)Land pattern and thermal pad differ between these packages — run a quick footprint check before you swap variants.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 42 distinct suffix patternsExamples: 3Q16244DGGR, 3Q16211DGGR, 3Q3257PWR, 3Q3257RGYR, 3T16212DGGR (+37 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Buffers, Drivers, Receivers and Transceivers — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 42 SN74CB part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| SN74CB3Q16244DGGR | Package: TSSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Output Current: 30mA | Number of Channels: 16 | Number of Bits: 16 | Logic Function: Multiplexer, Demultiplexer | Max Operating Temp: 85°C | TSSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q16211DGGR | Package: TSSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Output Current: 30mA | Number of Channels: 24 | Number of Bits: 24 | Logic Function: Multiplexer, Demultiplexer | Max Operating Temp: 85°C | TSSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3257PWR | Package: TSSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Number of Channels: 4 | Number of Outputs: 4 | Number of Bits: 8 | Logic Function: Multiplexer, Demultiplexer | Max Operating Temp: 85°C | TSSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3257RGYR | Package: VQFN | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Number of Channels: 4 | Number of Outputs: 4 | Number of Bits: 8 | Logic Function: Multiplexer, Demultiplexer | Max Operating Temp: 85°C | VQFN | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3T16212DGGR | Package: TSSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Output Current: 64mA | Number of Channels: 24 | Number of Outputs: 24 | Number of Bits: 24 | Max Operating Temp: 85°C | TSSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3T16212DGVR | Package: TFSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Output Current: 64mA | Number of Channels: 24 | Number of Outputs: 24 | Number of Bits: 24 | Max Operating Temp: 85°C | TFSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3T3253DGVR | Package: TFSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Number of Channels: 2 | Number of Outputs: 2 | Number of Bits: 8 | Logic Function: Multiplexer, Demultiplexer | Max Operating Temp: 85°C | TFSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3T3257PWR | Package: TSSOP | Max Supply Voltage: 3.6V | Min Supply Voltage: 2.3V | Number of Channels: 4 | Number of Outputs: 4 | Number of Bits: 8 | Logic Function: Multiplexer, Demultiplexer | Max Operating Temp: 85°C | TSSOP | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q16210DLR | 20-Ch FET Bus Switch, 500MHz, 3.3V, CMOS, SSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q16244DGVR | 16-Ch FET Bus Switch, 500MHz, 3.6V, CMOS, 48-TVSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3125PW | 4-Bit CMOS Bus Switch IC, 4-Element, 2.3-3.6V, 0.2ns PD, TSSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3244DGVR | 8-Ch FET Bus Switch, 3.3V, 0.2ns, CMOS, SPST, 2.3-3.6V | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3244PWR | 8-Bit Bus Switch IC, 2-Element, CMOS, 3.6V, TSSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3244RGYR | 2-Element 8-Bit Bus Switch, CMOS, 3.6V, VQFN EP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3245DBQR | 8-Ch FET Bus Switch, 500MHz, 3.3V, SPST, CMOS, SSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3245DGVR | 8-Ch FET Bus Switch, 500MHz, 3.3V, SPST, CMOS, TFSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3245PWR | 8-Bit CMOS Bus Switch, 500MHz, 2.3-3.6V, SPST, TSSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3245RGYR | 8-Ch FET Bus Switch, 3.3V, 500MHz, 0.2ns Delay, VQFN | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3251DBQR | 3.3V 8:1 FET Bus Switch IC | 500MHz Bandwidth | SSOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74CB3Q3251DGVR | 3.3V 8:1 1CH FET Bus Switch IC, 500MHz, 16-TVSOP | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on SN74CB map to package, grade, and reel options.
How to Choose the Right SN74CB Buffers, Drivers, Receivers and Transceivers
Match the footprint first
Packages here: TSSOP, VQFN, TFSOP, 48-BSSOP (0.295", 7.50mm Width). Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For SN74CB, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "SN74CB" — include the full suffix (e.g. 3Q16244DGGR, 3Q16211DGGR, 3Q3257PWR). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for SN74CB product family
Identity
Base Model
SN74CB
Manufacturer
Texas Instruments
Series
74CB
Listed Variants
42
Variant Parameters
Package Type
TSSOP, VQFN, TFSOP, 48-BSSOP (0.295", 7.50mm Width)
Lifecycle Status
Active
RoHS Status
Compliant
Source SN74CB with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 42 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the SN74CB product family.
SN74CB is a base / family code from Texas Instruments. You order a full MPN such as SN74CB3Q16244DGGR, SN74CB3Q16211DGGR, SN74CB3Q3257PWR. The variant table lists 42 orderable lines with different suffixes.
Listed suffix fragments include: 3Q16244DGGR, 3Q16211DGGR, 3Q3257PWR, 3Q3257RGYR, 3T16212DGGR, 3T16212DGVR. Typically they encode package (TSSOP, VQFN, TFSOP, 48-BSSOP (0.295", 7.50mm Width)), temperature grade, and tape/reel option. Always decode on the Texas Instruments datasheet ordering guide — do not guess from pattern alone.
On this page the varying fields are: Package Type. Filter the table by the parameter you care about before picking an MPN.
Only after footprint and thermal review. Packages listed here (TSSOP, VQFN, TFSOP, 48-BSSOP (0.295", 7.50mm Width)) use different land patterns and often different thermal resistance. Layout swaps need a new paste stencil at minimum, not just a BOM edit.
Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.
Full manufacturer MPN (not just SN74CB), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.
Related Base Numbers
Related Series
Explore product families linked to this base-number page.