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DS14C239 Dual Supply TIA EIA-232 3 x 5 Driver Receiver
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 necessary output levels from a single a 5V supply and a positive voltage power supply ( a 7 5V to a 13 2V) Driver slew rate control and receiver noise filtering have also been internalized 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 battery powered applications
Features
Y Y Y
Y Y Y Y Y Y
Conforms to TIA EIA-232-E and CCITT V 28 Internal DC-DC converter Low power requirement I a e 10 mA max ICC e 1 mA max Internal driver slew rate control Receiver Noise Filtering Operates above 120 kbits sec TRI-STATE Receiver Outputs Direct replacement for MAX239 Industrial temperature range option DS14C239T (b40 C to a 85 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
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications
b 0 3V to a 6V Supply Voltage (VCC) V a Pin (VCC b 0 3V) to a 15V a 0 3V to b 15V Vb Pin b 0 3V to (VCC a 0 3V) Driver Input Voltage Driver Output Voltage (V a a 0 3V) to (Vb b 0 3V) g 30V Receiver Input Voltage b 0 3V to (VCC a 0 3V) Receiver Output Voltage a 150 C Junction Temperature a 25 C (Note 6) Maximum Package Power Dissipation N Package 2400 mW WM Package 1400 mW
Storage Temperature Range Lead Temperature (Soldering 4 sec ) Short Circuit Duration (DOUT) ESD Rating (HBM 1 5 kX 100 pF)
b 65 C to a 150 C a 260 C
continuous t 2 0 kV
Recommended Operating Conditions
Supply Voltage (VCC) Supply Pin (V a ) Operating Free Air Temp (TA) DS14C239 DS14C239T Min 45 75 0
b 40
Max 55 13 2
a 70 a 85
Units V V C C
Electrical Characteristics
Over recommended operating conditions unless otherwise specified (Note 2) Symbol Parameter Conditions Min Typ Max Units
DEVICE CHARACTERISTICS Vb Ia ICC Negative Power Supply Supply Current (V a ) RL e 3 kX C1 C2 e 1 0 mF DIN e 2 0V No Load No Load
b9 5
V 10 10 mA mA
4 01
Supply Current (VCC)
DRIVER CHARACTERISTICS VIH VIL IIH IIL VOH VOL IOS a IOSb RO High Level Input Voltage Low Level Input Voltage High Level Input C.