DS14185

DS14185 NSC | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 8

Technical content

Features

n Replaces one 1488 and two 1489s n Conforms to EIA/TIA-232-E n 3 drivers and 5 receivers n Flow through pinout n Failsafe receiver outputs n 20-pin SOIC package n LapLink® compatible −200 kbps data rate Connection Diagram Functional Diagram LapLink® is a registered trademark of Travelling Software. SOIC DS011938-1 Order Number DS14185WM See NS Package M20B DS011938-2 April 1999 DS14185 EIA/TIA-232 3 Driver x 5 Receiver © 1999 National Semiconductor Corporation DS011938 www.national.com

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 (V CC ) +7V Supply Voltage (V+) +15V Supply Voltage (V−) −15V Driver Input Voltage 0V to V CC Driver Output Voltage (Power Off) ±15V Receiver Input Voltage ±25V Receiver Output Voltage (ROUT ) 0 Vt oV CC Maximum Package Power Dissipation@ +25˚C M Package 1488 mW Derate M Package 11.9 mW/˚C above +25˚C Storage Temperature Range −65˚C to +150˚C Lead Temperature Range (Soldering, 4 seconds) +260˚C ESD Ratings (HBM, 1.5 kΩ , 100 pF) ≥1.5 kV Recommended Operating Conditions Min Typ Max Units Supply Voltage (VCC ) +4.75 +5.0 +5.25 V Supply Voltage (V+) +9.0 +12.0 +13.2 V Supply Voltage (V−) −13.2 −12.0 −9.0 V Operating Free Air Temperature (TA) 0 25 70 ˚C Electrical Characteristics(Note 2) Over recommended supply voltage and operating temperature ranges, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units DEVICE CHARACTERISTICS I CC VCC Supply Current No Load, All Inputs at +5V 21.0 30 mA I+ V+ Supply Current (Note 2) No Load, All Driver Inputs at 0.8V or +2V All Receiver Inputs at 0.8V or 2.4V. V V+ = 13.2V, V− = −13.2V 13 22 mA I− V− Supply Current (Note 2) DRIVER CHARACTERISTICS V IH High Level Input Voltage 2.0 V VIL Low Level Input Voltage 0.8 V IIH High Level Input Current V IN = 5V 10 µA (Note 2) IIL Low Level Input Current V IN = 0V −1.24 −1.5 mA (Note 2) VOH High Level Output Voltage R L = 3k Ω ,V IN = 0.8V, 6 7 V (Note 2) V + = 9V, V− = −9V R L = 3k Ω ,V IN = 0.8V, 8.5 9 V R L = 7k Ω ,V IN = 0.8V, 10 11.5 V VOL Low Level Output Voltage R L = 3k Ω ,V IN = 2V, −7 −6 V (Note 2) V + = 9V, V− = −9V R L = 3k Ω ,V IN = 2V, −8 −7.5 V R L = 7k Ω ,V IN = 0.8V, −11 −10 V IOS + Output High Short V O = 0V, VIN = 0.8V −6 −13 −18 mA Circuit Current (Note 2) IOS − Output Low Short V O = 0V, VIN = 2.0V 6 13 18 mA Circuit Current (Note 2) R O Output Resistance −2V ≤ VO ≤ +2V, 300 Ω V+ = V− = VCC = 0V −2V ≤ VO ≤ +2V, 300 Ω V+ = V− = VCC = Open Ckt www.national.com 2

Electrical Characteristics(Note 2) (Continued) Over recommended supply voltage and operating temperature ranges, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units RECEIVER CHARACTERISTICS V TH Input High Threshold V O ≤ 0.4V, IO = 3.2 mA 1.85 2.4 V (Recognized as a High Signal) VTL Input Low Threshold V O ≥ 2.5V, IO = −0.5 mA 0.7 1.0 V (Recognized as a Low Signal) R IN Input Resistance V IN = ±3V to±15V 3.0 4.1 7.0 k Ω IIN Input Current (Note 2) V IN = +15V 2.1 4.1 5.0 mA VIN = +3V 0.43 0.7 1 mA VOH High Level Output Voltage I OH = −0.5 mA, VIN = −3V 2.6 4 V (Note 7) I OH = −10 µA, VIN = −3V 4.0 4.9 V IOH = −0.5 mA, VIN = Open Circuit 2.6 4 V IOH = −10 µA, VIN = Open Circuit 4.0 4.9 V VOL Low Level Output Voltage I OL = 3.2 mA, VIN = +3V 0.2 0.4 V IOSR Short Circuit Current (Note 2) VO = 0V, VIN = 0V −4 −2.7 −1.7 mA Switching Characteristics(Note 2) TA = 25˚C Symbol Parameter Conditions Min Typ Max Units DRIVER CHARACTERISTICS t PHL Propagation Delay High to Low R L = 3k Ω ,C L = 50 pF (Figures 1, 2) 60 350 ns tPLH Propagation Delay Low to High 240 350 ns tr,tf Output Slew Rate (Note 8) 50 ns RECEIVER CHARACTERISTICS t PHL Propagation Delay High to Low R L = 1.5 kΩ ,C L = 15 pF (includes fixture plus probe), Figures 3, 4) 150 350 ns tPLH Propagation Delay Low to High 240 350 ns tr Rise Time 87 175 ns tf Fall Time 40 100 ns 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 table of Electrical Characteristics specifies conditions of 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 speci- fied. For current, minimum and maximum values are specified as an absolute value and the sign is used to indicate direction. For voltage logic levels, the more posi- tive value is designated as maximum. For example, if −6V is a maximum, the typical value (−6.8V) is more negative. Note 3:All typicals are given for: VCC = +5.0V, V+ = +12.0V, V− = −12V, TA = +25˚C. Note 4:Only one driver output shorted at a time. Note 5:Generator characteristics for driver input: f= 64 kHz (128 kbits/sec), tr = tf < 10 ns, VIH = 3V, VIL = 0V, duty cycle= 50% . Note 6:Generator characteristics for receiver input: f= 64 kHz (128 kbits/sec), tr = tf = 200 ns, VIH = 3V, VIL = −3V, duty cycle= 50% . Note 7:If receiver inputs are unconnected, receiver output is a logic high. Note 8:Refer to typical curves. Driver output slew rate is measured from the +3.0V to the −3.0V level on the output waveform. Inputs not under test are connected to VCC or GND. Slew rate is determined by load capacitance. To comply with a 30 V/µs maximum slew rate, a minimum load capacitance of 390 pF is recommended. www.national.com3

11 GND Ground

FIGURE 1. Driver Propagation Delay and Transition Time Test Circuit(Note 5) FIGURE 2. Driver Propagation Delay and Transition Time Waveforms Slew Rate (SR)= 6V/(tr or tf) FIGURE 3. Receiver Propagation Delay and Transition Time Test Circuit(Note 6) FIGURE 4. Receiver Propagation Delay and

20 V CC Positive Power Supply Pin (+5V±5% )

are RTS, DTR, DSR, DCD, CTS, and RI. FIGURE 5. Typical DTE Application

Typical Performance Characteristics The above input waveforms were used to generate all Typical AC Characteristics. DS011938-8 DS011938-9 Driver Output Slew Rate between +3V and −3V vs Load Capacitance Conditions: V CC = 5V, RL = 5k Ω ,TA = 25˚C, fIN = 64 kHz Square Wave DS011938-15 Driver Output Voltage vs Frequency and CL Conditions: VCC = 5V, RL = 5k Ω ,TA = 25˚C DS011938-16 Supply Current vs Frequency and Driver CL DS011938-13 Supply Current vs Frequency and Driver CL DS011938-17 www.national.com 6

Typical Performance Characteristics(Continued) Supply Current vs Frequency DS011938-18 Driver Output Current vs Output Voltage DS011938-19 www.national.com7

Physical Dimensionsinches (millimeters) unless otherwise noted LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com Small Outline Package Order Number DS14185WM DS14185 EIA/TIA-232 3 Driver x 5 Receiver National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.