DS14C239 Datasheet PDF - National Semiconductor

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DS14C239
National Semiconductor

Part Number DS14C239
Description Dual Supply TIA/EIA-232 3 x 5 Driver/Receiver
Page 8 Pages


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March 1996
DS14C239
Dual Supply TIA EIA-232 3 x 5 Driver Receiver
General Description
The DS14C239 is a three driver five receiver device which
conforms to the TIA EIA-232-E standard and CCITT V 28
recommendations This device eliminates b12V supply by
employing an internal DC-DC converter to generate the nec-
essary output levels from a single a5V supply and a posi-
tive voltage power supply (a7 5V to a13 2V) Driver slew
rate control and receiver noise filtering have also been inter-
nalized to eliminate the need for external slew rate control
and noise filtering capacitors With the addition of
TRI-STATE receiver outputs device power consumption is
kept to a minimum
The combination of its low power requirement and extended
operating temperature range makes this device an ideal
choice for a wide variety of commercial industrial and bat-
tery powered applications
Features
Y Conforms to TIA EIA-232-E and CCITT V 28
Y Internal DC-DC converter
Y Low power requirement Ia e 10 mA max
ICC e 1 mA max
Y Internal driver slew rate control
Y Receiver Noise Filtering
Y Operates above 120 kbits sec
Y TRI-STATE Receiver Outputs
Y Direct replacement for MAX239
Y Industrial temperature range option DS14C239T
(b40 C to a85 C)
Connection Diagram
Functional Diagram
TL F 11283 – 1
Order Number DS14C239N DS14C239WM
DS14C239TN or DS14C239TWM
See NS Package Number M24B or NA24G
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1996 National Semiconductor Corporation TL F 11283
RRD-B30M66 Printed in U S A
TL F 11283 – 2



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Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage (VCC)
Va Pin
Vb Pin
b0 3V to a6V
(VCC b 0 3V) to a15V
a0 3V to b15V
Driver Input Voltage
Driver Output Voltage
b 0 3V to (VCC a 0 3V)
(Va a 0 3V) to (Vb b 0 3V)
Receiver Input Voltage
g30V
Receiver Output Voltage
Junction Temperature
b0 3V to (VCC a 0 3V)
a150 C
Maximum Package Power Dissipation
N Package
WM Package
a25 C (Note 6)
2400 mW
1400 mW
Storage Temperature Range
Lead Temperature (Soldering 4 sec )
Short Circuit Duration (DOUT)
ESD Rating (HBM 1 5 kX 100 pF)
b65 C to a150 C
a260 C
continuous
t 2 0 kV
Recommended Operating
Conditions
Min Max
Supply Voltage (VCC)
Supply Pin (Va)
45 55
7 5 13 2
Operating Free Air Temp (TA)
DS14C239
0 a70
DS14C239T
b40 a85
Units
V
V
C
C
Electrical Characteristics
Over recommended operating conditions unless otherwise specified (Note 2)
Symbol
Parameter
DEVICE CHARACTERISTICS
Vb Negative Power Supply
Ia Supply Current (Va)
ICC Supply Current (VCC)
DRIVER CHARACTERISTICS
VIH
VIL
IIH
IIL
VOH
VOL
IOSa
IOSb
RO
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
High Level Output Voltage
Low Level Output Voltage
Output High Short Circuit Current
Output Low Short Circuit Current
Output Resistance
RECEIVER CHARACTERISTICS
VTH Input High Threshold Voltage
VTL Input Low Threshold Voltage
VHY Hysteresis
Conditions
RL e 3 kX C1 C2 e 1 0 mF DIN e 2 0V
No Load
No Load
VIN t 2 0V
VIN s 0 8V
RL e 3 kX
VO e 0V VIN e 0 8V
VO e 0V VIN e 2 0V
b2V s VO s a2V
VCC e Va e GND e 0V
TA e 25 C
TA e b40 C to a85 C
TA e 25 C
TA e b40 C to a85 C
Min Typ Max Units
b9 5
4
01
10
10
V
mA
mA
20
GND
b10
b10
50
b40
50
87
b8 0
b20
16
VCC
08
a10
a10
b5 0
b5 0
40
V
V
mA
mA
V
V
mA
mA
300 X
2 24
2 26
08 15
02 05 10
01 05 10
V
V
V
V
V
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Electrical Characteristics (Continued)
Over recommended operating conditions unless otherwise specified (Note 2)
Symbol
Parameter
Conditions
RECEIVER CHARACTERISTICS (Continued)
RIN
IIN
VOH
VOL
VIH
VIL
IIH
IIL
IOZ
Input Resistance
Input Current
High Level Output Voltage
Low Level Output Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Output Leakage Current
VIN e a15V
VIN e a3V
VIN e b3V
VIN e b15V
VIN e b3V IO e b3 2 mA
VIN e b3V IO e b20 mA
VIN e a3V IO e a3 2 mA
EN
VIN t 2 4V
VIN s 0 8V
EN e VCC 0V s ROUT s VCC
Min Typ Max Units
30
2 14
0 43
b1 0
b5 0
35
40
24
GND
b10
b10
b10
45
38
06
b0 6
b3 8
45
49
0 25
01
70
50
10
b0 43
b2 14
04
VCC
08
a10
a10
a10
kX
mA
mA
mA
mA
V
V
V
V
V
mA
mA
mA
Switching Characteristics
Over recommended operating conditions unless otherwise specified (Note 4)
Symbol
Parameter
Conditions
Min Typ Max Units
DRIVER CHARACTERISTICS
tPLH
Propagation Delay LOW to HIGH
RL e 3 kX
tPHL
Propagation Delay HIGH to LOW
CL e 50 pF
(Figures 1 and 2)
l ltsk Skew tPLH– tPHL
SR1 Output Slew Rate
RL e 3kX to 7 kX CL e 50 pF
Va s 10 35V
07 40
07 40
0 10
ms
ms
ms
4 0 17
30 V ms
SR2 Output Slew Rate
RL e 3 kX CL e 2500 pF
Va s 10 35V
30 64
V ms
RECEIVER CHARACTERISTICS
tPLH
tPHL
tsk
tPLZ
tPZL
tPHZ
tPZH
tnw
Propagation Delay LOW to HIGH
Propagation Delay HIGH to LOW
l lSkew tPLH–tPHL
Input Pulse Width l 10 ms
CL e 50 pF
(Figures 3 and 4)
(Figures 5 and 7)
(Figures 5 and 6)
Noise Pulse Width Rejected
(Figures 3 and 4)
21
29
08
0 25
0 70
0 25
0 70
20
65
65
20
20
20
20
20
10
ms
ms
ms
ms
ms
ms
ms
ms
Note 1 ‘‘Absolute Maximum Ratings’’ 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 ‘‘Electrical Characteristics’’ 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 IOSa and IOSb 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 e tf e 200 ns VIH e 3V VIL e b3V f e 64 kHz (128 kbits sec) Driver AC input waveform for test
purposes tr e tf s 10 ns VIH e 3V VIL e 0V f e 64 kHz (128 kbits sec)
Note 5 All typicals are given for VCC e 5 0V and TA e a25 C Va e 10 35V
Note 6 Ratings apply to ambient temperature at a25 C Above this temperature derate N package 20 mW C and WM package 13 5 mW C
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Parameter Measurement Information
FIGURE 1 Driver Load Circuit
TL F 11283 – 4
FIGURE 2 Driver Switching Waveform
TL F 11283 – 5
FIGURE 3 Receiver Load Circuit
TL F 11283 – 6
FIGURE 4 Receiver Propagation Delays and Noise Rejection
TL F 11283 – 7
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