UT3221G-R16-R datasheet(7/10 Pages) UTC

tên linh kiện	UT3221G-R16-R

Giải thích chi tiết về linh kiện	LINE DRIVER/RECEIVER

PDF	10 Pages

Scroll/Zoom	100%

nhà sản xuất	UTC [Unisonic Technologies]

Trang chủ	http://www.utc-ic.com

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UT3221/E

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

7 of 10

www.unisonic.com.tw

QW-R103-128.C



DETAILED DESCRIPTION (Cont.)

Table 2 summarizes the UTC UT3221 operating modes. FORCEON and FORCEOFF override the automatic

circuitry and force the transmitter into its normal operating state or into its low-power standby state. When neither

control is asserted, the IC selects between these states automatically based on receiver input levels.

+0.3V

+2.7V

-0.3V

-2.7V

Transmitters Enabled, INVALID High

Shutdown, Transmitters Disabled,

1µA Supply Current, INVALID Low

Transmitters Enabled, INVALID High

Indeterminate

Fig.1 Shutdown Input Levels

When shutdown, the UTC UT3221’s charge pumps are turned off, V+ decays to VCC, V- decays to ground, the

transmitter output is disabled (high impedance). The time required to exit shutdown is typically 100µs.

Fig.2 Shutdown Input Timing

UT3221G-R16-R bảng dữ liệu(PDF) 7 Page - Unisonic Technologies