米6体育平台手机版

ZHCSGQ1C September 2017 – December 2018 THVD1510 , THVD1512 , THVD1550 , THVD1551 , THVD1552

PRODUCTION DATA.

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)

D|14
DGS|10

散热焊盘机械数据 (封装 | 引脚)

订购信息

9.4.1 Device Functional Modes for THVD1510 and THVD1550

When the driver enable pin, DE, is logic high, the differential outputs A and B follow the logic states at data input D. A logic high at D causes A to turn high and B to turn low. In this case the differential output voltage defined as V_OD = V_A – V_B is positive. When D is low, the output states reverse: B turns high, A becomes low, and V_OD is negative.

When DE is low, both outputs turn high-impedance. In this condition the logic state at D is irrelevant. The DE pin has an internal pull-down resistor to ground, thus when left open the driver is disabled (high-impedance) by default. The D pin has an internal pull-up resistor to V_CC, thus, when left open while the driver is enabled, output A turns high and B turns low.

Table 1. Driver Function Table for THVD1510 and THVD1550

INPUT	ENABLE	OUTPUTS		FUNCTION
D	DE	A	B	FUNCTION
H	H	H	L	Actively drive bus high
L	H	L	H	Actively drive bus low
X	L	Z	Z	Driver disabled
X	OPEN	Z	Z	Driver disabled by default
OPEN	H	H	L	Actively drive bus high by default

When the receiver enable pin, RE, is logic low, the receiver is enabled. When the differential input voltage defined as V_ID = V_A – V_B is higher than the positive input threshold, V_TH+, the receiver output, R, turns high. When V_ID is lower than the negative input threshold, V_TH-, the receiver output, R, turns low. If V_ID is between V_TH+ and V_TH- the output is indeterminate.

When RE is logic high or left open, the receiver output is high-impedance and the magnitude and polarity of V_ID are irrelevant. Internal biasing of the receiver inputs causes the output to go failsafe-high when the transceiver is disconnected from the bus (open-circuit), the bus lines are shorted to one another (short-circuit), or the bus is not actively driven (idle bus).

Table 2. Receiver Function Table for THVD1510 and THVD1550

DIFFERENTIAL INPUT	ENABLE	OUTPUT	FUNCTION
V_ID = V_A – V_B	RE	R	FUNCTION
V_TH+ < V_ID	L	H	Receive valid bus high
V_TH- < V_ID < V_TH+	L	?	Indeterminate bus state
V_ID < V_TH-	L	L	Receive valid bus low
X	H	Z	Receiver disabled
X	OPEN	Z	Receiver disabled by default
Open-circuit bus	L	H	Fail-safe high output
Short-circuit bus	L	H	Fail-safe high output
Idle (terminated) bus	L	H	Fail-safe high output