Three-state buffer, also known as three-state driver, is often used for level conversion and increasing the driving current of MCU in automotive and industrial fields. Recently, NOVOSENSE announced the launch of a new three-state buffer - NCA82XX product series, which can be widely used in automotive motor drive, OBC/DCDC, industrial motor drive, frequency converter, servo, LED display and other scenes.
Application and Interpretation of NCA82XX in Automobile and Industry
The NCA82XX series is an 8-channel three-state buffer, which can help improve the driving ability of the bus-oriented transceivers and clock drivers, and ensure the accuracy of signal timing. The product series is divided into two versions of dual power supply and single power supply. Among them,
- NCA8244 and NCA8541 are the basic versions of single power supply, which have the functions of two-way transmission and one-way transmission of data respectively, and are usually used in motor drive, LED display and other scenarios
- NCA84245 and NCA8T245 are upgraded versions of dual-power supply, which can meet the requirements of customer system application upgrade and revision, and more flexibly help customers realize bilateral voltage conversion, with the function of Level shift
Application of NCA82XX three-state buffer in the main drive of automobile
Application of NCA82XX buffer in industrial servo/inverter
NCA82XX models and parameters
NCA8244
NCA8244/NCA8244L is an eight-channel buffer/driver, which is used to improve the drive capability of transceivers and clock drivers facing the bus side and ensure the integrity of signal timing. It provides four transmission channels in two directions, and has output enable control (/OE) of low-level enable respectively. When/OE is low, NCA8244/NCA8244L transfers data from input port A to output port Y. When/OE is high, the output port is in high resistance state. During power-on and power-off,/OE should be connected to VCC through pull-up resistance to ensure that the output port remains in high resistance state. NCA8244/NCA8244L can support 5.5 V input voltage, and each channel supports the maximum 24 mA current drive capability. All unused input ports must be kept in VCC or GND state to prevent VCC overcurrent.
main performance
- Applicable to the automotive field:
Vehicle specification version：NCA8244-Q1TSTR, NCA8244-Q1SWTR
- Input compatible TTL level
- Power supply voltage:
NCA8244: 4.5 v至5.5 v
NCA8244L: 1.65V至3.6V
- Support 5.5 V input voltage
- ESD：
3000V HBM
2000V CDM
- working temperature:-40℃~125℃
-ROHS compliant packaging：TSSOP20, SOP20
NCA8T245
NCA8T245 is an 8-way buffer/driver with two independent power supplies, and the power supply voltage range is 1.65V~5.5V. The level of port A refers to VCCA, and the level of port B refers to VCCB, so it supports two-way conversion between 1.8V, 2.5V, 3.3V and 5.5V. NCA8T245 is mainly used for asynchronous communication between two data buses and provides a direction control terminal (DIR) for two-way transmission of control data. When the DIR is high, the chip transmits data from A end to B end; When DIR is low level, data is transmitted from B end to A end. Output enable/OE level follows VCCA, low level enable. When/OE is high, the output terminal is in high resistance state. During power-on and power-off,/OE shall be connected to VCCA through pull-up resistance to ensure high resistance state of output terminal. When the NCA8T245 power supply voltage is between 4.5V and 5.5V, it can support 32mA drive current at most. All unused inputs must be kept at VCC or GND to prevent VCC overcurrent.
main performance
- Applicable to automotive applications: NCA8T245-Q1TSXR
- Control pin level reference VCCA
- Power supply voltage: 1.65V~5.5V
- ESD：
4000V HBM
1000V CDM
- working temperature:-40℃~125℃
- ROHS compliant packaging：TSSOP24
NCA8541
NCA8541可支持5.5V输入电压，每个通道支持最大6mA电流驱动能力。所有未使用的输入端必须保持在VCC或GND，防止过流。NCA8541 is an 8-way buffer/driver, which is used to improve the driving ability of transceivers and clock drivers facing the bus end and ensure the integrity of signal timing. It provides 8 transmission channels and two low-level enabled output control terminals (/OE). When both/OE1 and/OE2 are enabled, NCA8541 transmits data from A end to Y end. When one of the/OEs is high, the output terminal is in high resistance state. During power-on and power-off,/OE should be connected to VCC through pull-up resistance to ensure high resistance state of output port. The NCA8541 can support 5.5 V input voltage, and each channel supports a maximum of 6 mA current drive capability. All unused inputs must be kept at VCC or GND to prevent overcurrent.
main performance
- Applicable to the automotive field::
NCA8541-Q1TSTR
- Input compatible TTL level
- Supply voltage:4.5V~5.5V
- Support 5.5V input voltage
- ESD：
3000V HBM
2000V CDM
- working temperature:-40℃~125℃
-ROHS compliant packaging: TSSOP20
NCA84245
NCA84245 is an 8-way bus transceiver with two independent power supplies. The level of terminal A refers to VCCA, and the power supply voltage range is 4.5V~5.5V; The B terminal level refers to VCCB, the power supply voltage range is 2.7V~3.6V, and supports two-way level conversion of two voltage ranges. NCA84245 is mainly used for asynchronous communication between two data buses, providing a direction control terminal (DIR) to control the data transmission direction. When DIR is logically high, data is transmitted from A to B; When DIR is logic low, data is transmitted from B to A. Output enable/OE level refers to VCCA, low level enable, when/OE is high level, output is in high resistance state. During power-on and power-off,/OE shall be connected to VCC through pull-up resistance to ensure high resistance state of output terminal. The NCA84245 supports a maximum of 24mA current drive capability per channel. All unused inputs must be kept at VCC or GND to prevent VCC overcurrent.
main performance
- Applicable to automobile field:
NCA84245-Q1TSXR
- Control pin level referenceVCCA
- supply voltage:
VCCA: 4.5V至5.5V
VCCB: 2.7V至3.6V
- ESD：
2000V HBM
1000V CDM
- working temperature:-40℃~125℃
- ROHS compliant packaging：TSSOP24
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