DS14C232CM National Semiconductor, DS14C232CM Datasheet - Page 6

• Manufacturer Part Number: DS14C232CM
• Description: RS232 Line Driver IC
• Manufacturer: National Semiconductor

Specifications of DS14C232CM

• Device Type: Driver / Receiver
• Driver Case Style: SOIC
• No. Of Pins: 16
• Mounting Type: Surface Mount
• No. Of Driver/receivers: 2/2
• Peak Reflow Compatible (260 C): No
• Supply Voltage: 5V
• Supply Voltage Max: 5V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Parameter Measurement Information
Pin Descriptions
V
Power supply pin for the device, +5V (
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 capaci-
tor: 1.0 µF (6.3V). Capacitor value should be larger than
1 µF.
C2+, C2− (Pins 4, 5)
External capacitor connection pins. Recommended capaci-
tor: 1.0 µF (16V). Capacitor value should be greater than
1 µF.
CC
(Pin 16)
FIGURE 4. Receiver Propagation Delays and Noise Rejection (Note 4)
±
10%).
FIGURE 3. Receiver Load Circuit
(Continued)
6
D
Driver input pins are TTL/CMOS compatible. Inputs of un-
used drivers may be left open, an internal active pull-up re-
sistor (500 k
Output will be LOW for open inputs.
D
Driver output pins conform to TIA/EIA-232-E levels.
R
Receiver input pins accept TIA/EIA-232-E input voltages
(
teresis of 100 mV. Unused receiver input pins may be left
open. Internal input resistor 4.7 k
a failsafe high output.
R
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.
±
IN
OUT
IN
OUT
25V). Receivers feature a noise filter and guaranteed hys-
1, D
1, R
1, D
1, R
IN
IN
2 (Pins 11, 10)
2 (Pins 13, 8)
OUT
OUT
DS010744-5
2 (Pins 14, 7)
2 (Pins 12, 9)
minimum, typically 5 M ) pulls input HIGH.
pulls input low, providing
DS010744-6