NSC DS14C232E-883, DS14C232CN, DS14C232CMX, DS14C232CM, DS14C232TMX Datasheet
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October 1999
DS14C232
Low Power +5V Powered TIA/EIA-232 Dual
Driver/Receiver
General Description
The DS14C232 is a low power dual driver/receiver featuring an onboard DC to DC converter, eliminating the need for
±12V power supplies. The device only requires a +5V power supply. ICC is specified at 3.0 mA maximum, making the device ideal for battery and power conscious applications. The drivers' slew rate is set internally and the receivers feature internal noise filtering, eliminating the need for external slew rate and filter capacitors. The device is designed to interface data terminal equipment (DTE) with data circuit-terminating equipment (DCE). The driver inputs and receiver outputs are TTL and CMOS compatible. DS14C232C driver outputs and receiver inputs meet TIA/EIA-232-E (RS-232) and CCITT V.28 standards.
Features
nPin compatible with industry standard MAX232, LT1081, ICL232 and TSC232
nSingle +5V power supply
nLow power Ð I CC 3.0 mA maximum
nDS14C232C meets TIA/EIA-232-E (RS-232) and CCITT V.28 standards
nCMOS technology
nReceiver Noise Filter
nPackage efficiency Ð 2 drivers and 2 receivers
nAvailable in Plastic DIP, Narrow and Wide SOIC packages
nTIA/EIA-232 compatible extended temperature range option:
DS14C232T −40ÊC to +85ÊC DS14C232E/J: −55ÊC to +125ÊC
Connection Diagram |
Functional Diagram |
DS010744-1
Order Number DS14C232CN, DS14C232CM, or
DS14C232TM
See NS Package Number N16E, or M16A
DS010744-2
Driver/Receiver Dual 232-TIA/EIA Powered +5V Power Low DS14C232
© 1999 National Semiconductor Corporation |
DS010744 |
www.national.com |
DS14C232
Absolute Maximum Ratings (Note 1)
Specifications for the 883 version of this product are listed separately on the following pages.
Supply Voltage, VCC |
−0.3V to 6V |
V+ Pin |
(VCC − 0.3)V to +14V |
V− Pin |
+0.3V to −14V |
Driver Input Voltage |
−0.3V to (V CC + 0.3V) |
Driver Output Voltage |
(V+ + 0.3V) to (V− − |
|
0.3V) |
Receiver Input Voltage |
±25V |
Receiver Output Voltage |
−0.3V to (V CC + 0.3V) |
Junction Temperature |
+150ÊC |
Maximum Package Power Dissipation @ 25ÊC (Note 6) |
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N Package |
1698 mW |
M Package |
1156 mW |
Short Circuit Duration, |
Continuous |
DOUT |
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Storage Temp. Range |
−65ÊC to +150ÊC |
Lead Temp. (Soldering, 4 |
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sec.) |
+260ÊC |
ESD Rating |
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(HBM, 1.5 kW, 100 pF) |
³ 2.5 kV |
Recommended Operating
Conditions
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Min |
Max |
Units |
Supply Voltage, VCC |
4.5 |
5.5 |
V |
Operating Free Air Temp. (TA) |
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DS14C232C |
0 |
+70 |
ÊC |
DS14C232T |
−40 |
+85 |
ÊC |
Electrical Characteristics (Note 2)
Over recommended operating conditions, unless otherwise specified
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Symbol |
Parameter |
Conditions |
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Min |
Typ |
Max |
Units |
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DC TO DC CONVERTER CHARACTERISTICS |
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V+ |
Positive Power Supply |
RL = 3 kW, C1±C4 = 1.0 µF, DIN = 0.8V |
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9.0 |
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V |
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V− |
Negative Power Supply |
RL = 3 kW, C1±C4 = 1.0 µF, DIN = 2.0V |
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−8.5 |
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V |
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ICC |
Supply (VCC) Current |
No Load |
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1.0 |
3.0 |
mA |
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DRIVER CHARACTERISTICS |
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VIH |
High Level Input Voltage |
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2 |
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VCC |
V |
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VIL |
Low Level Input Voltage |
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GND |
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0.8 |
V |
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IIH |
High Level Input Current |
VIN ³ 2.0V |
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−10 |
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+10 |
µA |
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IIL |
Low Level Input Current |
VIN £ 0.8V |
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−10 |
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+10 |
µA |
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VOH |
High Level Output Voltage |
RL = 3 kW |
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5.0 |
8.0 |
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V |
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VOL |
Low Level Output Voltage |
RL = 3 kW |
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−7.0 |
−5.0 |
V |
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IOS+ |
Output High Short Circuit |
VO = 0V, VIN = 0.8V |
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(Note 3) |
−30 |
−15 |
−5.0 |
mA |
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Current |
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IOS− |
Output Low Short Circuit |
VO = 0V, VIN = 2V |
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5.0 |
11 |
30 |
mA |
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Current |
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RO |
Output Resistance |
−2V £ VO £ +2V, |
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300 |
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W |
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VCC = 0V = GND |
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RECEIVER CHARACTERISTICS |
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VTH |
Input High Threshold |
VCC = 5.0V |
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1.9 |
2.4 |
V |
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Voltage |
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VCC = 5.0V ±10% |
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1.9 |
2.6 |
V |
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VTL |
Input Low Threshold |
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0.8 |
1.5 |
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V |
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Voltage |
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VHY |
Hysteresis |
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0.2 |
0.4 |
1.0 |
V |
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RIN |
Input Resistance |
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−15V £ VIN £ |
3.0 |
4.7 |
7.0 |
kW |
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+15V |
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IIN |
Input Current |
VIN = +15V |
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+2.14 |
+3.75 |
+5.0 |
mA |
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VIN = +3V |
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+0.43 |
+0.64 |
+1.0 |
mA |
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VIN = −3V |
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−1.0 |
−0.64 |
−0.43 |
mA |
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VIN = −15V |
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−5.0 |
−3.75 |
−2.14 |
mA |
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VOH |
High Level Output Voltage |
VIN = −3V, I O = −3.2 mA |
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3.5 |
4.5 |
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V |
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VIN = −3V, I O = −20 µA |
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4.0 |
4.9 |
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V |
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VOL |
Low Level Output Voltage |
VIN = +3V, IO = +3.2 mA |
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0.15 |
0.4 |
V |
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www.national.com |
2 |
Switching Characteristics
Over recommended operating conditions, unless otherwise specified.
Symbol |
Parameter |
Conditions |
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Min |
Typ |
Max |
Units |
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DRIVER CHARACTERISTICS |
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tPLH |
Propagation Delay Low to |
RL = 3 kΩ |
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Figure 1 |
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1.0 |
4.0 |
µs |
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High |
CL = 50 pF |
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and |
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tPHL |
Propagation Delay High to |
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Figure 2 |
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1.0 |
4.0 |
µs |
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Low |
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tSK |
Skew |tPLH − t PHL| |
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0.1 |
1.0 |
µs |
SR1 |
Output Slew Rate |
RL = 3 kΩ to 7 kΩ, CL = |
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(Note 7) |
4.0 |
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30 |
V/µs |
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50 pF |
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SR2 |
Output Slew Rate |
RL = 3 kΩ, CL = 2500 pF |
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4.5 |
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V/µs |
RECEIVER CHARACTERISTICS |
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tPLH |
Propagation Delay Low to |
Input Pulse Width > 10 µs |
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2.9 |
6.5 |
µs |
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High |
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CL = 50 pF |
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tPHL |
Propagation Delay High to |
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2.5 |
6.5 |
µs |
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Low |
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tSK |
Skew |tPLH − t PHL| |
(Figures 3, 4) |
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0.4 |
2.0 |
µs |
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tnw |
Noise Pulse Width |
(Figures 3, 4) |
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0.7 |
0.5 |
µs |
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Rejected |
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Note 1: ªAbsolute Maximum Ratingsº are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The tables of ªElectrical Characteristicsº specify conditions for device operation.
Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise specified.
Note 3: IOS+ and IOS− values are for one output at a time. If more than one output is shorted simultaneously, the device power dissipation may be exceeded.
Note 4: Receiver AC input waveform for test purposes: tr = tf = 200 ns, VIH = 3V, VIL = −3V, f = 30 kHz.
Note 5: All typicals are given for VCC = 5.0V.
Note 6: Ratings apply to ambient temperature at +25ÊC. Above this temperature derate: N Package 15.6 mW/ÊC, and M Package 10.6 mW/ÊC.
Note 7: Slew rate is defined as V/ t, measured between ±3V level.
DS14C232
3 |
www.national.com |
DS14C232
Absolute Maximum Ratings (Note 1)
For complete Military Product Specifications, refer to the appropriate SMD or MDS.
Supply Voltage, VCC |
−0.3V to 6V |
V+ Pin |
(VCC − 0.3)V to +14V |
V− Pin |
+0.3V to −14V |
Driver Input Voltage |
−0.3V to (V CC + 0.3V) |
Driver Output Voltage |
(V+ + 0.3V) to (V− − 0.3V) |
Receiver Input Voltage |
±25V |
Receiver Output Voltage |
−0.3V to (V CC + 0.3V) |
Maximum Package Power Dissipation @ 25ÊC (Note 8) |
|
J Package |
1520 mW |
E Package |
2000 mW |
Short Circuit Duration, DOUT |
Continuous |
Storage Temp. Range |
−65ÊC to +150ÊC |
Lead Temp. (Soldering, 4 sec.) |
+260ÊC |
ESD Rating |
|
(HMB, 1.5 kW, 100 pF) |
³ 2.5 kV |
Recommended Operating
Conditions
|
Min |
Max |
Units |
Supply Voltage, VCC |
4.5 |
5.5 |
V |
Operating Free Air Temp. (TA) |
|
|
|
DS14C232E/J |
−55 |
+125 |
ÊC |
Electrical Characteristics (Note 2)
Over recommended operating conditions, unless otherwise specified
Symbol |
Parameter |
Conditions |
|
Min |
Max |
Units |
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DEVICE CHARACTERISTICS (C1±C4 = 1.0 µF) |
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ICC |
Supply (VCC) Current |
No Load |
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8.0 |
mA |
DRIVER CHARACTERISTICS |
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VIH |
High Level Input Voltage |
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2 |
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V |
VIL |
Low Level Input Voltage |
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0.8 |
V |
IIH |
High Level Input Current |
VIN ³ 2.0V |
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100 |
µA |
IIL |
Low Level Input Current |
VIN = 0V |
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100 |
µA |
VOH |
High Level Output Voltage |
RL = 3 kW |
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5.0 |
|
V |
VOL |
Low Level Output Voltage |
RL = 3 kW |
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−5.0 |
V |
IOS+ |
Output High Short Circuit Current |
VO = 0V |
(Note 3) |
−25 |
|
mA |
IOS− |
Output Low Short Circuit Current |
VO = 0V |
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25 |
mA |
RO |
Output Resistance |
−2V £ VO £ +2V, TA = 25ÊC, |
|
300 |
|
W |
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VCC = 0V = GND |
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RECEIVER CHARACTERISTICS (C1±C4 = 1.0 µF) |
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VTH |
Input High Threshold Voltage |
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3.0 |
V |
VTL |
Input Low Threshold Voltage |
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0.2 |
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V |
VHY |
Hysteresis |
TA = 25ÊC, +125ÊC |
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0.1 |
1.0 |
V |
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TA = −55ÊC |
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0.05 |
1.0 |
V |
RIN |
Input Resistance |
VIN = ±3V and ±15V, TA = 25ÊC |
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3.0 |
7.0 |
kW |
VOH |
High Level Output Voltage |
IO = −3.2 mA |
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3.5 |
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V |
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IO = −20 µA |
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4.0 |
|
V |
VOL |
Low Level Output Voltage |
IO = +3.2 mA |
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0.4 |
V |
Switching Characteristics
Over recommended operating conditions, unless otherwise specified.
Symbol |
Parameter |
Conditions |
|
Min |
Max |
Units |
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DRIVER CHARACTERISTICS (C1±C4 = 1.0 µF) |
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tPLH |
Propagation Delay Low to High |
RL = 3 kW, CL = 50 pF |
Figures 1, 2 |
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4.0 |
µs |
tPHL |
Propagation Delay High to Low |
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4.0 |
µs |
tSK |
Skew |tPLH − t PHL| |
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1.0 |
µs |
SR1 |
Output Slew Rate |
RL = 3 kW to 7 kW, CL = 2500 pF |
(Note 7) |
1.5 |
30 |
V/µs |
RECEIVER CHARACTERISTICS (C1±C4 = 1.0 µF) |
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tPLH |
Propagation Delay Low to High |
Input Pulse Width > 10 µs |
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8.0 |
µs |
tPHL |
Propagation Delay High to Low |
CL = 50 pF |
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8.0 |
µs |
tSK |
Skew |tPLH − t PHL| |
(Figures 3, 4) |
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2.0 |
µs |
www.national.com |
4 |
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