AN654 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

AN654

New RS-232 ICs Feature 1µA Supply Current, ±15kV ESD Protection, and 3V Operation

Maxim Integrated 

latched output, applied as an interrupt, can wake up the system when a change of state occurs on any

incoming line.

Table 2. RS-232 Transceivers with Automatic-Shutdown Circuitry

To see the benefits of automatic shutdown, compare the supply currents of Maxim's earlier RS-232

transceivers against those of their auto-shutdown counterparts:

Auto-shutdown devices have Force on/force off controls (Figure 2) that can override the automatic circuitry

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

control is asserted, the IC selects between these states automatically. As a result, the system saves power

without changes to the existing BIOS/operating system.

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