DS14C202 Low Power +5V Powered EIA/TIA-232 Dual Driver/Receiver General Description Features The DS14C202 is a low power dual driver/receiver featuring an onboard DC to DC converter. This eliminates the need for ± 12V power supplies and requires only a +5V power supply. Only four 0.1 µF capacitors are needed for the DC to DC converter. The drivers maintain greater than ± 5V output signal levels at data rates in excess of 128 kbits/sec when loaded in accordance with the EIA/TIA-232-E specification. ICC is specified at 15 mA maximum, making the device ideal for battery and power conscious applications. The drivers’ slew rate is set internally, eliminating the need for external slew rate 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. DS14C202 driver outputs and receiver inputs meet EIA/TIA-232-E and ITU-T V.28 standards. This device is an enhanced version of the DS14C232 that requires smaller external capacitors (0.1 µF) and supports higher data rates of up to 128 kbit/sec. n Uses only four small 0.1 µF capacitors for DC to DC converter n Operates over 128 kbit/sec n Pin compatible with MAX202, MAX232A and others n Single +5V power supply n Low power n DS14C202 meets EIA/TIA-232-E and ITU-T V.28 standards n CMOS technology n Package efficiency — 2 drivers and 2 receivers n Available in Plastic DIP and Narrow SOIC packages n Extended temperature range: −40˚C to +85˚C n ESD ≥ 6.0 kV HBM Connection Diagram Functional Diagram DS14C202 June 1998 DS14C202 Low Power +5V Powered EIA/TIA-232 Dual Driver/Receiver ADVANCE INFORMATION DS012622-1 Order Number DS14C202TN or DS14C202TM See NS Package Number N16A or M16A DS012622-2 © 1998 National Semiconductor Corporation www.national.com DS012622 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 cmserv Proof 1 1 Absolute Maximum Ratings (Note 1) Maximum Package Power Dissipation @ 25˚C (Note 6) N Package TBD M Package TBD Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 4 sec.) +260˚C If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) Supply Voltage (V+) Supply Voltage (V−) Short Circuit Duration, DOUT Driver Input Voltage Driver Output Voltage Receiver Input Voltage Receiver Output Voltage ESD Rating (HBM, 1.5 kΩ, 100 pF) Junction Temperature −0.3V to 6V (VCC − 0.3V) to +14V +0.3V to −14V Continuous −0.3V to (VCC + 0.3V) (V+ + 0.3V) to (V− − 0.3V) ± 25V −0.3V to (VCC + 0.3V) Recommended Operating Conditions Supply Voltage, (VCC) Operating Free Air Temp. (TA) DS14C202T ≥ 6.0 kV +150˚C Min 4.5 Max 5.5 Units V −40 +85 ˚C Electrical Characteristics (Notes 2, 5) Over recommended operating conditions, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units DEVICE CHARACTERISTICS V+ Positive Power Supply V− Negative Power Supply RL = 3 kΩ, C1–C4 = 0.1 µF, DIN = 0.8V RL = 3 kΩ, C1–C4 = 0.1 µF, DIN = 2.0V ICC VCC Supply Current No Load 9.0 V −8.5 V 15 mA V DRIVER CHARACTERISTICS VIH High Level Input Voltage 2.0 VCC VIL Low Level Input Voltage GND 0.8 V IIH High Level Input Current VIN ≥ 2.0V −30 +30 µA IIL Low Level Input Current +30 µA High Level Output Voltage VOL Low Level Output Voltage VIN ≤ 0.8V RL = 3 kΩ RL = 3 kΩ −30 VOH IOS+ Output High Short Circuit Current IOS− RO 5.0 8.0 V −7.0 −5.0 V (Note 3) −5.0 −15 −30 mA Output Low Short Circuit Current VOUT = 0V, VIN = 0.8V VOUT = 0V, VIN = 2.0V 5.0 11 30 mA Output Resistance −2V ≤ VOUT ≤ +2V, VCC = 0V = GND or Open 300 Ω RECEIVER CHARACTERISTICS VTH Input High Threshold Voltage VTL Input Low Threshold Voltage 0.8 1.5 VHY Hysteresis 0.2 0.4 1.0 V RIN Input Resistance 3.0 4.7 7.0 kΩ IIN Input Current +2.14 +3.5 +5.0 mA +0.43 +0.6 +1.0 mA −0.43 −0.6 −1.0 mA −2.14 −3.5 −5.0 mA 3.5 4.5 4.0 4.9 1.7 −15V ≤ VIN ≤ +15V VIN = +15V VIN = +3V VIN = −3V VIN = −15V VOH VOL High Level Output Voltage Low Level Output Voltage www.national.com VIN = −3V, IOH = −3.2 mA VIN = −3V, IOH = −20 µA VIN = +3V, IOL = +3.2 mA 0.15 2.4 V V V V 0.4 V 2 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 cmserv Proof 2 Switching Characteristics (Note 5) Over recommended operating conditions, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units 1.0 4.0 µs 1.0 4.0 µs 0.1 1.0 µs 4.0 10 30 V/µs 4.0 10 30 V/µs 2.0 µs DRIVER CHARACTERISTICS tPLH Propagation Delay Low to High tPHL Propagation Delay High to Low tSK Skew |tPLH − tPHL| SR1 Output Slew Rate SR2 Output Slew Rate RL = 3 kΩ CL = 50 pF (Figure 1) RL = 3 kΩ to 7 kΩ, CL = 50 pF RL = 3 kΩ to 7 kΩ, CL = 2500 pF (Note 7) RECEIVER CHARACTERISTICS tPLH Propagation Delay Low to High tPHL Propagation Delay High to Low tSK Skew |tPLH − tPHL| tr tf Input Pulse Width > 10 µs CL = 50 pF (Figure 2) 2.0 µs 300 ns Output Rise Time 15 ns Output Fall Time 15 ns DATA RATES fMAX RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF (Note 8) Maximum Data Rate 128 TBD kbps 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 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. 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 positive value is designated as maximum. For example, if −6V is a maximum, the typical value of −6.8V is more negative. Note 3: IOS+ and IOS− values are for one output at a time. Note 4: Receiver AC input waveform for test purposes: tr = tf = 160 ns (10% to 90%), VIH = 3V, VIL = −3V, f = 64 kHz, 50% duty cycle. Driver AC input waveform for test purposes: tr = tf = 10 ns (10% to 90%), VIH = 3V, VIL = 0V, f = 64 kHz, 50% duty cycle. Note 5: All typicals are given for VCC = 5.0V, +25˚C. Note 6: Ratings apply to ambient temperature at +25˚C. Above this temperature derate: N Package TBD and M Package TBD. Note 7: Slew rate is defined as ∆V/∆t, measured between ± 3V level. Note 8: fMAX criteria is either 60%–40% duty cycle or a waveform that is 1⁄3 rise, 1⁄3 fall, 1⁄3 logic level (driver ± 5V and receiver 3.5V/0.4V). Parameter Measurement Information DS012622-3 DS012622-4 FIGURE 1. Driver Load Circuit and Switching Waveform (Note 4) DS012622-5 DS012622-6 tr and tf measured between 20% and 80% of the waveform. FIGURE 2. Receiver Load Circuit and Switching Waveform (Note 4) 3 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 www.national.com cmserv Proof 3 DIN1, DIN2 (Pins 11, 10) Driver input pins are TTL/CMOS compatible. Inputs of unused drivers may be left open, an internal active pull-up resistor (500 kΩ minimum, typically 1 MΩ) pulls input HIGH. Output will be LOW for input pins. DOUT1, DOUT2 (Pins 14, 7) Pin Descriptions VCC (Pin 16) Power supply pin for the device, +5V ( ± 10%). V+ (Pin 2) Positive supply for EIA/TIA-232-E drivers. Recommended external capacitor: C4 = 0.1 µF (≥ 6.3V). Capacitor value should not be less than 0.1 µF. This supply is not intended to be loaded externally. (Note 9) V− (Pin 6) Driver output pins conform to EIA/TIA-232-E levels. RIN1, RIN2 (Pins 13, 8) Receiver input pins accept EIA/TIA-232-E input voltages ( ± 25V). Receivers feature guaranteed hysteresis of 200 mV. Unused receiver input pins may be left open. Internal input resistor (5 kΩ) pulls input LOW, providing a fail-safe HIGH output. ROUT1, ROUT2 (Pins 12, 9) Negative supply for EIA/TIA-232-E drivers. Recommended external capacitor: C3 = 0.1 µF (≥ 16V). Capacitor value should not be less than 0.1 µF. This supply is not intended to be loaded externally. (Note 9) C1+, C1− (Pins 1, 3) 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. External capacitor connection pins. Recommended capacitor: C1 = 0.1 µF (≥ 6.3V). Capacitor value should not be less than 0.1 µF. (Note 9) C2+, C2− (Pins 4, 5) External capacitor connection pins. Recommended capacitor: C2 = 0.1 µF (≥ 16V). Capacitor value should not be less than 0.1 µF. (Note 9) Note 9: All capacitor values have tolerances of less than ± 20%. Typical Application Information Application of DS14C202 and INS8250 DS012622-7 Book Extract End www.national.com 4 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 cmserv Proof 4 Typical Connection Diagram Book Extract End DS012622-8 5 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 www.national.com cmserv Proof 5 THIS PAGE IS IGNORED IN THE DATABOOK 6 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 cmserv Proof 6 Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS14C202TM NS Package Number M16A Order Number DS14C202TN NS Package Number N16A 7 PrintDate=1998/06/22 PrintTime=10:23:03 42589 ds012622 Rev. No. 0 www.national.com cmserv Proof 7 7 DS14C202 Low Power +5V Powered EIA/TIA-232 Dual Driver/Receiver 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: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into sonably expected to cause the failure of the life support the body, or (b) support or sustain life, and whose faildevice or system, or to affect its safety or effectiveness. ure 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. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: [email protected] www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: [email protected] 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: [email protected] National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 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. PrintDate=1998/06/22 PrintTime=10:23:04 42589 ds012622 Rev. No. 0 cmserv Proof 8