NCA9511-DMSR Hot Swappable I2C Bus and SMBus Buffer
| Price: |
$0.39-$0.6 |
$0.6-$1.5 |
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Replace parts:
Replace chip:
Replacement parts:
Replacement chip:
Alternative parts:
Alternative chip:
Pin to pin parts:
Pin 2 pin parts:
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NCA9511-DMSR |
TCA9511ADGKR
TCA4311D
TCA4311ADGKR
TCA4311DGKR
TCA4311DR
LTC4300A-3CMS8#TRPBF
LLTC4300A-3IMS8#TRPBF
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The NCA9511 is a hot-swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock buses. Control circuitry prevents the backplane-side I2C lines (in) from being connected to the card-side I2C lines (out) until a stop command or bus idle condition occurs on the backplane without bus contention on the card. When the connection is made, this device provides bidirectional buffering, keeping the backplane and card capacitances separated. During insertion, the SDA and SCL lines are pre-charged to 1 V to minimize the current required to charge the parasitic capacitance of the device. When the I2C bus is idle, the NCA9511 can be put into shutdown mode by setting the EN pin low, reducing power consumption. When EN is pulled high, the
NCA9511 resumes normal operation. It also includes an open drain READY output pin, which indicates that the backplane and card sides are connected together. When READY is high, the SDAIN and SCLIN are connected to SDAOUT and SCLOUT. When the two sides are disconnected, READY is low.
Product Specification
| Operating power-supply voltage |
range of 2.7 V to 5.5 V |
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TA ambient airtemperature range
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| Applications |
Servers
Enterprise Switching
Telecom switching equipment
Base stations
Industrial automation equipment
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| Package options |
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Features
Supports bidirectional data transfer of I2C bussignals
Operating power-supply voltage range of 2.7 V to 5.5 V
TA ambient airtemperature range of -40 ℃ to 105 ℃
1-V pre-charge on all SDA and SCL lines prevents
corruption during live insertion
Accommodatesstandard mode and fast mode I2C devices
Supports clock stretching, arbitration and synchronization
Powered-off high-impedance I2C pins
Applications
Servers
Enterprise Switching
Telecom switching equipment
Base stations
Industrial automation equipment
Packing & Delivery:
1. Shipping Method: Express (SF Express, DHL, TNT, FedEx, etc.), shipping charges are paid by the buyer.
2. Packaging Method: pressure-proof, moisture proof, shock-proof packaging.
3. Shipping Time: In stock items: 3-5 days. Lead Time orders: 45-65 days.
ONE-STOP Electronic Parts Supply Chain:
1. 18 years of experience in the electronic components industry
2. Online service provided by over 80+ sales and technical.
3. Serving over 4500 global customers.
4. Annual sales exceeding 50 million USD, have an upward trend every year.
5. During the industry downturn, our sales of Chinese brand chips increased against the trend. Contributed a significant portion of the company's performance.
6. In the recently years, most customers have reduced costs and adopted Chinese chip brands. From initially worrying about quality and not daring to try them out, our customers now are continuing to place orders every month.
7. Our Product line includes MCU, amplifiers, isolation devices, logic devices, power devices, etc.
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