DS14C335 datasheet(5/9 Pages) NSC

5 / 9 page

Parameter Measurement Information (Continued)

Pin Descriptions

CC (Pin 3). Power supply pin for the device, +3.3V (±0.3V).

V+ (Pin 1). Positive supply for TIA/EIA-232-E drivers. Rec-

ommended external capacitor — 0.47 µF (16V). This supply

is not intended to be loaded externally.

V− (Pin 25). Negative supply for TIA/EIA-232-E drivers. Rec-

ommended external capacitor — 0.47 µF (16V). This supply

is not intended to be loaded externally.

C1+, C1− (Pins 6, 24). External capacitor connection pins.

Recommended capacitor — 0.47 µF (6.3V).

C2+, C2− (Pins 2, 4). External capacitor connection pins.

Recommended capacitor — 0.47 µF (16V).

C3+, C3− (Pins 28, 26). External capacitor connection pins.

Recommended capacitor — 0.47 µF (6.3V).

SHUTDOWN (SD) (Pin 23). A High on the SHUTDOWN pin

will lower the total I

CC current to less than 10 µA, providing a

low power state. In this mode receiver R5 remains active.

The SD pin should be driven or tied low (GND) to disable the

shutdown mode.

IN 1–3 (Pins 7, 8, 9). Driver input pins are JEDEC 3.3V

standard compatible.

OUT 1–3 (Pins 22, 21, 20). Driver output pins conform to

TIA/ElA-232 -E levels.

IN 1–5 (Pins 19, 18, 17, 16, 15). Receiver input pins accept

TIA/EIA-232-E input voltages (±25V). Receivers guarantees

hysteresis of TBD mV. Unused receiver input pins may be

left open. Internal input resistor (5 k

Ω) pulls input LOW, pro-

viding a failsafe HIGH output.

OUT 1–5 (Pins 10, 11, 12, 13, 14). Receiver output pins are

JEDEC 3.3V standard compatible.

GND (Pin 27). Ground Pin.

DS011734-8

FIGURE 6. Driver SHUTDOWN (SD) Delay Timing

DS011734-9

FIGURE 7. Receiver SHUTDOWN (SD) Delay Test Circuit

DS011734-10

FIGURE 8. Receiver SHUTDOWN (SD) Delay Timing

DS14C335 Datasheet(PDF) 5 Page - National Semiconductor (TI)