DS14C232

SNLS076C – OCTOBER 1999 – REVISED APRIL 2013

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PIN DESCRIPTIONS

Power supply pin for the device, +5V (±10%).

V+ (Pin 2)

Positive supply for TIA/EIA-232-E drivers. Recommended external capacitor: C4-1.0

μF (6.3V). Capacitor value should be larger than 1 μF.

This supply is not intended to be loaded externally.

V

− (Pin 6)

Negative supply for TIA/EIA-232-E drivers. Recommended external capacitor: C3-1.0

μF (16V). Capacitor value should be larger than 1 μF.

This supply is not intended to be loaded externally.

C1+, C1

− (Pins 1, 3)

External capacitor connection pins. Recommended capacitor: 1.0

μF (6.3V). Capacitor value should be larger than 1 μF.

C2+, C2

− (Pins 4, 5)

External capacitor connection pins. Recommended capacitor: 1.0

μF (16V). Capacitor value should be greater than 1 μF.

Driver input pins are TTL/CMOS compatible. Inputs of unused drivers may be left open, an internal active pull-up resistor (500 k

Ω minimum,

typically 5 M

Ω) pulls input HIGH. Output will be LOW for open inputs.

Driver output pins conform to TIA/EIA-232-E levels.

Receiver input pins accept TIA/EIA-232-E input voltages (±25V). Receivers feature a noise filter and specified hysteresis of 100 mV.

Unused receiver input pins may be left open. Internal input resistor 4.7 k

Ω pulls input low, providing a failsafe high output.

Receiver output pins are TTL/CMOS compatible. Receiver output HIGH voltage is specified for both CMOS and TTL load conditions.

GND (Pin 15)

Ground Pin.

8

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