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TRS3318CDBR-TRS3318CDBRG4-TRS3318IDBR-TRS3318IDBRG4
2.5-V 460-kbps RS-232 Transceiver With +/-15-kV ESD Protection 20-SSOP -40 to 85
READY
C1+
DOUT2
RIN2
ROUT2
FORCEOFF
VCC
ROUT1
FORCEON
DIN1
DIN2
INVALID
DB OR PW PACKAGE
(TOP VIEW)
TRS3318Theisa dual-driver, dual-receiver, RS-232
• ESD Protection for RS-232 I/O Pins compatible transceiver. The device features auto-
– ±15 kV Human-Body Model (HBM) powerdown plus and enhanced electrostatic
±8 kV IEC 61000-4-2, Contact Discharge discharge (ESD) protection integrated into the chip.
Driver and receiver input are protectedto ±8
– ±8 kV IEC 61000-4-2, Air-Gap Discharge kV the IEC 61000-4-2 Air-Gap Discharge
• 300-μA Operating Supply Current method, kV using the IEC 61000-4-2 Contact
• 1-μA Low-Power Standby (With Receivers Discharge method, and ±15 kV using the Human-
Active) Mode Body (HBM).
Designedto Transmitata Data Rateof The operatesata data rateof 460 kbps. The
460 kbps transceiver has a proprietary low-dropout driver
output enabling RS-232-compatible operation
• Auto-Powerdown Plus Option Featuresfromto 3-V supply witha dual charge pump.
Flexible Power-Saving Mode The pump requires only four 0.1-μF
• Operates Froma Single 2.25-Vto 3-V VCC capacitors and featuresa logic-level output (READY)
Supply that when the charge pumpis regulating and
theis readyto begin transmitting.
APPLICATIONS The achievesa 1-μA supply current using
• Battery-Powered Systems the feature. This device
PDAs automatically entersa low-power power-down mode
when cableis disconnectedor the drivers
• Cellular Phones of peripherals are inactive for more
• Notebooks than The device turns on again whenit senses
Hand-Held Equipment a validat any driveror receiver input. Auto-
powerdown saves power without changes to the
• Pagers existingor operating system.
