Orderable parts
| Type number | Orderable part number | Ordering code (12NC) | Package | Buy from distributors |
|---|---|---|---|---|
| 74CB3Q3257BQ | 74CB3Q3257BQX | 935339458115 | SOT763-1 | Order product |
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Click here for more information74CB3Q3257BQ
4-bit 1-of-2 FET multiplexer/demultiplexer with charge pump
The 74CB3Q3257 is a quad high-bandwidth single-pole, double-throw FET bus switch. The device features one select input (S) and one output enable input (OE). The switch is disabled when the OE input is HIGH. An internal charge-pump increases the gate voltage of the NMOS pass transistor. The result is improved RON and RON(flat) performance and the ability to switch 5 V signals when VCC = 3.3 V.
Features and benefits
Wide supply voltage range from 2.3 V to 3.6 V
Overvoltage switching on switch ports:
0 V to 5 V switching with VCC = 2.5 V
0 V to 5 V switching with VCC = 3.3 V
4 Ω (typical) ON resistance
3.5 pF (typical) OFF-state capacitance
High bandwidth 0.5 GHz (maximum)
Low input/output capacitance minimizes loading and signal distortion
Fast switching frequency fmax = 20 MHz (maximum)
Low power consumption ICC = 0.4 mA (typical)
Control inputs can be driven by TTL or 5 V/3.3 V CMOS outputs
IOFF supports partial power-down mode operation
Latch-up performance exceeds 100 mA per JESD 78E Class II Level A
ESD protection:
HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Specified from -40 °C to +85 °C
Applications
Communication infrastructure
Bus isolation
Memory interleaving
Sensor multiplexing
Parametrics
| Type number | VCC (V) | VPASS (V) | Logic switching levels | RON (Ω) | Nr of bits | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74CB3Q3257BQ | 2.3 - 3.6 | Vcc | CMOS/LVTTL | 4 | 4 | 0.2 | very low | -40~85 | 84 | 7.3 | 51.5 | DHVQFN16 |
PCB Symbol, Footprint and 3D Model
| Model Name | Description |
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Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74CB3Q3257BQ | 74CB3Q3257BQX (935339458115) |
Active | 3Q3257 |
DHVQFN16 (SOT763-1) |
SOT763-1 | SOT763-1_115 |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74CB3Q3257BQ | 74CB3Q3257BQX | 74CB3Q3257BQ |
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Series
Documentation (10)
| File name | Title | Type | Date |
|---|---|---|---|
| 74CB3Q3257 | 4-bit 1-of-2 FET multiplexer/demultiplexer with charge pump | Data sheet | 2024-04-11 |
| AN90063 | Questions about package outline drawings | Application note | 2025-06-13 |
| SOT763-1 | 3D model for products with SOT763-1 package | Design support | 2019-10-03 |
| cb3q3257 | IBIS model of 74CB3Q3257 | IBIS model | 2017-08-24 |
| Nexperia_document_leaflet_CB3Q_switches_201803 | CB3Q Bus Switches | Leaflet | 2018-04-06 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| DHVQFN16_SOT763-1_mk | plastic, dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 0.85 mm body | Marcom graphics | 2017-01-28 |
| SOT763-1 | plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body | Package information | 2023-05-11 |
| SOT763-1_115 | DHVQFN16; Reel pack, SMD, 7" Q1/T1 product orientation | Packing information | 2020-04-21 |
| 74CB3Q3257BQ_Nexperia_Product_Reliability | 74CB3Q3257BQ Nexperia Product Reliability | Quality document | 2025-03-20 |
Support
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Longevity
The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.
PCB Symbol, Footprint and 3D Model
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Ordering, pricing & availability
| Type number | Orderable part number | Ordering code (12NC) | Status | Packing | Packing Quantity | Buy online |
|---|---|---|---|---|---|---|
| 74CB3Q3257BQ | 74CB3Q3257BQX | 935339458115 | Active | SOT763-1_115 | 3,000 |
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Sample
As a Nexperia customer you can order samples via our sales organization.
If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.
How does it work?
The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.