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PCA9540B - 2-channel I²C-bus multiplexer TSSOP 8-Pin
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
PCA9540BDP/Q900J by NXP Semiconductors is a Multiplexer/Demultiplexer.
Multiplexer/Demultiplexers are under the broader part category of Logic Components.
Digital logic governs the behavior of signals in electronic circuits, enabling complex decisions based on simple binary inputs (yes/no). Logic components perform operations from these signals. Read more about Logic Components on our Logic part category page.
Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
3128708RL
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Farnell | I2C/SMBUS MULTIPLEXER, -40 TO 105DEG C RoHS: Compliant Min Qty: 10 Lead time: 16 Weeks, 0 Days Container: Reel | 5 |
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$1.0346 / $1.9258 | Buy Now |
DISTI #
3128708
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Farnell | I2C/SMBUS MULTIPLEXER, -40 TO 105DEG C RoHS: Compliant Min Qty: 1 Lead time: 16 Weeks, 0 Days Container: Cut Tape | 5 |
|
$1.0346 / $2.2578 | Buy Now |
DISTI #
568-13623-1-ND
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DigiKey | IC INTERFACE SPECIALIZED 8TSSOP Min Qty: 1 Lead time: 16 Weeks Container: Digi-Reel®, Cut Tape (CT), Tape & Reel (TR) |
1738 In Stock |
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$0.9698 / $1.9700 | Buy Now |
DISTI #
PCA9540BDP/Q900J
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Avnet Americas | Multiplexer 2 x 2:1 8-Pin TSSOP T/R - Tape and Reel (Alt: PCA9540BDP/Q900J) RoHS: Compliant Min Qty: 2500 Package Multiple: 2500 Lead time: 16 Weeks, 0 Days Container: Reel | 0 |
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$0.8520 / $0.8809 | Buy Now |
DISTI #
771-PCA9540BDP/Q900J
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Mouser Electronics | Encoders, Decoders, Multiplexers & Demultiplexers 2-channel I2C-bus multiplexer RoHS: Compliant | 1807 |
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$0.9390 / $1.9700 | Buy Now |
DISTI #
75723306
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Verical | 2-channel I2C-bus multiplexer Automotive AEC-Q100 RoHS: Compliant Min Qty: 30 Package Multiple: 1 Date Code: 2329 | Americas - 850 |
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$1.0000 / $1.6800 | Buy Now |
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NXP Semiconductors | 2-channel I2C-bus multiplexer, Reel 13" Q1/T1 RoHS: Compliant pbFree: Yes Lead time: 16 Weeks, 0 Days Container: Reel | 4985 |
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$1.0300 | Buy Now |
DISTI #
PCA9540BDP/Q900J
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Chip One Stop | Semiconductors RoHS: Compliant Min Qty: 1 Lead time: 0 Weeks, 1 Days Container: Cut Tape | 850 |
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$0.8260 / $1.6800 | Buy Now |
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Cytech Systems Limited | IC INTERFACE SPECIALIZED 8TSSOP | 2500 |
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RFQ | |
DISTI #
PCA9540BDP/Q900J
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EBV Elektronik | Multiplexer 2 x 21 8Pin TSSOP TR (Alt: PCA9540BDP/Q900J) RoHS: Compliant Min Qty: 2500 Package Multiple: 2500 Lead time: 18 Weeks, 0 Days | EBV - 0 |
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Buy Now |
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PCA9540BDP/Q900J
NXP Semiconductors
Buy Now
Datasheet
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Compare Parts:
PCA9540BDP/Q900J
NXP Semiconductors
PCA9540B - 2-channel I²C-bus multiplexer TSSOP 8-Pin
|
Rohs Code | Yes | |
Part Life Cycle Code | Active | |
Ihs Manufacturer | NXP SEMICONDUCTORS | |
Part Package Code | TSSOP | |
Pin Count | 8 | |
Manufacturer Package Code | SOT505-1 | |
Reach Compliance Code | compliant | |
Factory Lead Time | 16 Weeks | |
Samacsys Manufacturer | NXP | |
Logic IC Type | MULTIPLEXER | |
Moisture Sensitivity Level | 1 | |
Packing Method | TR, 13 INCH | |
Peak Reflow Temperature (Cel) | 260 |
This table gives cross-reference parts and alternative options found for PCA9540BDP/Q900J. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of PCA9540BDP/Q900J, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
Part Number | Manufacturer | Composite Price | Description | Compare |
---|---|---|---|---|
PCA9540BDP/G | NXP Semiconductors | Check for Price | PCA9540BDP/G | PCA9540BDP/Q900J vs PCA9540BDP/G |
PCA9540BDP/DG,118 | NXP Semiconductors | Check for Price | PCA9540B - 2-channel I²C-bus multiplexer TSSOP 8-Pin | PCA9540BDP/Q900J vs PCA9540BDP/DG,118 |
The PCA9540 can support I2C bus frequencies up to 400 kHz, but it's recommended to limit it to 100 kHz for reliable operation.
To configure the PCA9540 in dual-bus mode, connect the SCL/SDA pins of the two buses to the corresponding pins on the PCA9540, and use the EN pin to enable or disable each bus. See the datasheet for specific pin connections and control logic.
The PCA9540 can drive up to 400 pF of capacitance on the I2C bus, but it's recommended to limit it to 200 pF for reliable operation.
The PCA9540 can be reset by pulling the RESET pin low for at least 1 ms. This will reset the device to its default state.
Yes, the PCA9540 is compatible with both 3.3V and 5V devices on the same bus, but ensure that the voltage levels are compatible with the devices on the bus.