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ZHCSOE0P June 1999 – July 2021 MAX3221

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)

DB|16
PW|16

散热焊盘机械数据 (封装 | 引脚)

订购信息

8.4 Device Functional Modes

Table 8-1, Table 8-2, and Table 8-3 show the behavior of the driver, receiver, and INVALID(activelow) features under all possible relevant combinations of inputs.

Table 8-1 Driver⁽¹⁾

INPUTS				OUTPUT	DRIVER STATUS
DIN	FORCEON	FORCEOFF	VALID RIN RS-232 LEVEL	DOUT	DRIVER STATUS
X	X	L	X	Z	Powered off
L	H	H	X	H	Normal operation with automatic power down disabled
H	H	H	X	L	Normal operation with automatic power down disabled
L	L	H	Yes	H	Normal operation with automatic power down enabled
H	L	H	Yes	L	Normal operation with automatic power down enabled
L	L	H	No	Z	Powered off by automatic power down feature
H	L	H	No	Z	Powered off by automatic power down feature

(1) H = high level, L = low level, X = irrelevant, Z = high impedance, Yes = |RIN| > 2.7 V, No = |RIN| <0.3 V

Table 8-2 Receiver⁽¹⁾

INPUTS			OUTPUT	RECEIVER STATUS
RIN	EN	VALID RIN RS-232 LEVEL	ROUT	RECEIVER STATUS
X	H	X	Z	Output off
L	L	X	H	Normal operation
H	L	X	L
Open	L	No	H

(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off

Table 8-3 INVALID⁽¹⁾

INPUTS				OUTPUT
RIN	FORCEON	FORCEOFF	EN	INVALID
L	X	X	X	H
H	X	X	X	H
Open	X	X	X	L

(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off

Figure 8-1 Logic Diagram