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ZHCSOD9D October 2005 – July 2024 MAX3221E

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

PW|16
- MPDS361A
DB|16
- MPDS507A

散热焊盘机械数据 (封装 | 引脚)

订购信息

7.4 Device Functional Modes

Table 7-1, Table 7-2, and Table 7-3 show the behavior of the driver, receiver, and INVALID features under all possible relevant combinations of inputs.

Table 7-1 Function Tables Each Driver⁽¹⁾

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

(1) H = high level, L = low level, X = irrelevant, Z = high impedance

Table 7-2 Each Receiver⁽¹⁾

INPUTS			OUTPUT ROUT
RIN	EN	VALID RIN RS-232 LEVEL	OUTPUT ROUT
L	L	X	H
H	L	X	L
X	H	X	Z
Open	L	No	H

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

Table 7-3 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