페이지 15 - Exar Corporation 제품 - 인터페이스 - 드라이버, 수신기, 트랜시버 | Heisener Electronics
고객 문의
SalesDept@heisener.com +86-755-83210559 ext. 805
로그인/등록
Language Translation

* Please refer to the English Version as our Official Version.

BOM
카트 0

Exar Corporation 제품 - 인터페이스 - 드라이버, 수신기, 트랜시버

기록 950
페이지  15/34
이미지
부품 번호
제조업체
설명
패키지
재고
수량
Protocol
Number of Drivers/Receivers
Duplex
Receiver Hysteresis
Data Rate
Voltage - Supply
Operating Temperature
Mounting Type
Package / Case
Supplier Device Package
hot SP3074EMN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고112,380
RS422, RS485
1/1
Full
100mV
500kbps
3.3V
-40°C ~ 125°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
SP3073EMN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 14SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 14-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 14-SOIC
패키지: 14-SOIC (0.154", 3.90mm Width)
재고6,192
RS422, RS485
1/1
Full
100mV
500kbps
3.3V
-40°C ~ 125°C
Surface Mount
14-SOIC (0.154", 3.90mm Width)
14-SOIC
hot SP3072EMN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 100mV
  • Data Rate: 250kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고155,196
RS422, RS485
1/1
Half
100mV
250kbps
3.3V
-40°C ~ 125°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3071EMN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 250kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고150,996
RS422, RS485
1/1
Full
100mV
250kbps
3.3V
-40°C ~ 125°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
SP3070EMN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 14SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 250kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 14-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 14-SOIC
패키지: 14-SOIC (0.154", 3.90mm Width)
재고2,944
RS422, RS485
1/1
Full
100mV
250kbps
3.3V
-40°C ~ 125°C
Surface Mount
14-SOIC (0.154", 3.90mm Width)
14-SOIC
hot SP206CT-L/TR
Exar Corporation

IC TXRX RS232 SERIAL 24SOIC

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 4/3
  • Duplex: Full
  • Receiver Hysteresis: 500mV
  • Data Rate: 120Kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 24-SOIC (0.295", 7.50mm Width)
  • Supplier Device Package: 24-SOIC
패키지: 24-SOIC (0.295", 7.50mm Width)
재고109,824
RS232
4/3
Full
500mV
120Kbps
4.5 V ~ 5.5 V
0°C ~ 70°C
Surface Mount
24-SOIC (0.295", 7.50mm Width)
24-SOIC
hot SP206CA-L/TR
Exar Corporation

IC TXRX RS232 SERIAL 24SSOP

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 4/3
  • Duplex: Full
  • Receiver Hysteresis: 500mV
  • Data Rate: 120Kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 24-SSOP (0.209", 5.30mm Width)
  • Supplier Device Package: 24-SSOP
패키지: 24-SSOP (0.209", 5.30mm Width)
재고127,548
RS232
4/3
Full
500mV
120Kbps
4.5 V ~ 5.5 V
0°C ~ 70°C
Surface Mount
24-SSOP (0.209", 5.30mm Width)
24-SSOP
hot SP483EEP-L
Exar Corporation

IC TXRX RS485 HALF DUPLEX 8DIP

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 20mV
  • Data Rate: 250kbps
  • Voltage - Supply: 4.75 V ~ 5.25 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Through Hole
  • Package / Case: 8-DIP (0.300", 7.62mm)
  • Supplier Device Package: 8-PDIP
패키지: 8-DIP (0.300", 7.62mm)
재고53,940
RS422, RS485
1/1
Half
20mV
250kbps
4.75 V ~ 5.25 V
-40°C ~ 85°C
Through Hole
8-DIP (0.300", 7.62mm)
8-PDIP
SP1485EMN-L
Exar Corporation

IC TXRX RS485 DIFF ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 20mV
  • Data Rate: 20Mbps
  • Voltage - Supply: 4.25 V ~ 5.25 V
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고5,040
RS422, RS485
1/1
Half
20mV
20Mbps
4.25 V ~ 5.25 V
-40°C ~ 125°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3087EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 20Mbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고6,948
RS422, RS485
1/1
Full
100mV
20Mbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3086EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 14SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 20Mbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 14-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 14-SOIC
패키지: 14-SOIC (0.154", 3.90mm Width)
재고60,000
RS422, RS485
1/1
Full
100mV
20Mbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
14-SOIC (0.154", 3.90mm Width)
14-SOIC
hot SP3084EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고9,468
RS422, RS485
1/1
Full
100mV
500kbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3083EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 14SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 14-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 14-SOIC
패키지: 14-SOIC (0.154", 3.90mm Width)
재고136,788
RS422, RS485
1/1
Full
100mV
500kbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
14-SOIC (0.154", 3.90mm Width)
14-SOIC
hot SP3081EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 115Kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고91,896
RS422, RS485
1/1
Full
100mV
115Kbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3076EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 14SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 16Mbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 14-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 14-SOIC
패키지: 14-SOIC (0.154", 3.90mm Width)
재고178,368
RS422, RS485
1/1
Full
100mV
16Mbps
3.3V
-40°C ~ 85°C
Surface Mount
14-SOIC (0.154", 3.90mm Width)
14-SOIC
hot SP3074EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고157,272
RS422, RS485
1/1
Full
100mV
500kbps
3.3V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3073EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 14SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Full
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 14-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 14-SOIC
패키지: 14-SOIC (0.154", 3.90mm Width)
재고211,044
RS422, RS485
1/1
Full
100mV
500kbps
3.3V
-40°C ~ 85°C
Surface Mount
14-SOIC (0.154", 3.90mm Width)
14-SOIC
SP3243EHEA-L/TR
Exar Corporation

IC TXRX RS232 INTELLIGENT 28SSOP

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 3/5
  • Duplex: Full
  • Receiver Hysteresis: 300mV
  • Data Rate: 460Kbps
  • Voltage - Supply: 3 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-SSOP (0.209", 5.30mm Width)
  • Supplier Device Package: 28-SSOP
패키지: 28-SSOP (0.209", 5.30mm Width)
재고4,736
RS232
3/5
Full
300mV
460Kbps
3 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
28-SSOP (0.209", 5.30mm Width)
28-SSOP
SP232ECP-L
Exar Corporation

IC DVR/RCVR RS232 ESD 16DIP

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 2/2
  • Duplex: Full
  • Receiver Hysteresis: 500mV
  • Data Rate: 240kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Through Hole
  • Package / Case: 16-DIP (0.300", 7.62mm)
  • Supplier Device Package: 16-PDIP
패키지: 16-DIP (0.300", 7.62mm)
재고5,008
RS232
2/2
Full
500mV
240kbps
4.5 V ~ 5.5 V
0°C ~ 70°C
Through Hole
16-DIP (0.300", 7.62mm)
16-PDIP
hot SP3243EUCT-L/TR
Exar Corporation

IC TXRX RS232 INTELLIGNT 28SOIC

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 3/5
  • Duplex: Full
  • Receiver Hysteresis: 300mV
  • Data Rate: 1Mbps
  • Voltage - Supply: 3 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-SOIC (0.295", 7.50mm Width)
  • Supplier Device Package: 28-SOIC
패키지: 28-SOIC (0.295", 7.50mm Width)
재고105,228
RS232
3/5
Full
300mV
1Mbps
3 V ~ 5.5 V
0°C ~ 70°C
Surface Mount
28-SOIC (0.295", 7.50mm Width)
28-SOIC
SP3243EHCT-L/TR
Exar Corporation

IC TXRX RS232 INTELLIGNT 28SOIC

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 3/5
  • Duplex: Full
  • Receiver Hysteresis: 300mV
  • Data Rate: 460Kbps
  • Voltage - Supply: 3 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-SOIC (0.295", 7.50mm Width)
  • Supplier Device Package: 28-SOIC
패키지: 28-SOIC (0.295", 7.50mm Width)
재고4,272
RS232
3/5
Full
300mV
460Kbps
3 V ~ 5.5 V
0°C ~ 70°C
Surface Mount
28-SOIC (0.295", 7.50mm Width)
28-SOIC
hot SP3483EN-L/TR
Exar Corporation

IC TXRX RS485 HALF DUPLEX 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 20mV
  • Data Rate: 250kbps
  • Voltage - Supply: 3 V ~ 3.6 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고720,768
RS422, RS485
1/1
Half
20mV
250kbps
3 V ~ 3.6 V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
XR32431EUCRTR-F
Exar Corporation

IC TXRX RS232 DVR/RCVR 32QFN

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 3/5
  • Duplex: Full
  • Receiver Hysteresis: 300mV
  • Data Rate: 1Mbps
  • Voltage - Supply: 3 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 32-VFQFN Exposed Pad
  • Supplier Device Package: 32-QFN (5x5)
패키지: 32-VFQFN Exposed Pad
재고7,760
RS232
3/5
Full
300mV
1Mbps
3 V ~ 5.5 V
0°C ~ 70°C
Surface Mount
32-VFQFN Exposed Pad
32-QFN (5x5)
XR32430EUCRTR-F
Exar Corporation

IC TXRX RS232 DVR/RCVR 32QFN

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 3/5
  • Duplex: Full
  • Receiver Hysteresis: 300mV
  • Data Rate: 1Mbps
  • Voltage - Supply: 3 V ~ 5.5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 32-VFQFN Exposed Pad
  • Supplier Device Package: 32-QFN (5x5)
패키지: 32-VFQFN Exposed Pad
재고4,560
RS232
3/5
Full
300mV
1Mbps
3 V ~ 5.5 V
0°C ~ 70°C
Surface Mount
32-VFQFN Exposed Pad
32-QFN (5x5)
hot SP3485CN-L/TR
Exar Corporation

IC TXRX RS485 HALF DUPLEX 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 20mV
  • Data Rate: 10Mbps
  • Voltage - Supply: 3 V ~ 3.6 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고403,248
RS422, RS485
1/1
Half
20mV
10Mbps
3 V ~ 3.6 V
0°C ~ 70°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3078EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 100mV
  • Data Rate: 16Mbps
  • Voltage - Supply: 3.3V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고997,632
RS422, RS485
1/1
Half
100mV
16Mbps
3.3V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3088EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 100mV
  • Data Rate: 20Mbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고240,084
RS422, RS485
1/1
Half
100mV
20Mbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC
hot SP3085EEN-L/TR
Exar Corporation

IC TXRX RS485/RS422 ESD 8SOIC

  • Type: Transceiver
  • Protocol: RS422, RS485
  • Number of Drivers/Receivers: 1/1
  • Duplex: Half
  • Receiver Hysteresis: 100mV
  • Data Rate: 500kbps
  • Voltage - Supply: 4.5 V ~ 5.5 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
패키지: 8-SOIC (0.154", 3.90mm Width)
재고440,604
RS422, RS485
1/1
Half
100mV
500kbps
4.5 V ~ 5.5 V
-40°C ~ 85°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SOIC