SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 D D D D D D D D D D DB, DW, N, OR PW PACKAGE (TOP VIEW) Single-Chip RS-232 Interface for an External Modem or Other Computer Peripheral Serial Port Designed to Transmit and Receive 4-µs Pulses (Equivalent to 256 kbit/s) Wide Driver Supply-Voltage Range: 4.75 V to 15 V Driver Output Slew Rates Are Controlled Internally to 30 V/µs Maximum Receiver Input Hysteresis . . . 1000 mV Typical RS-232 Bus-Pin ESD Protection Exceeds 15 kV Using Human-Body Model (HBM) Five Drivers and Three Receivers Meet or Exceed the Requirements of TIA/EIA-232-F and ITU v.28 Standards Complements the SN75LP1185 Designed to Replace the Industry-Standard SN75196 With the Same Flow-Through Pinout Package Options Include Plastic Small Outline (DW), Shrink Small-Outline (DB), Thin Shrink Small-Outline (PW), and Dual-in-Line (N) Packages VCC DA1 DA2 DA3 RY1 RY2 DA4 RY3 DA5 GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VDD DY1 DY2 DY3 RA1 RA2 DY4 RA3 DY5 VSS description The SN75LP196 is a low-power bipolar device containing five drivers and three receivers, with 15 kV of ESD protection on the bus pins with respect to each other. Bus pins are defined as those pins that tie directly to the serial-port connector, including GND. The pinout matches the flow-through design of the industry-standard SN75196 and allows easy interconnection of the UART and serial-port connector of the IBM PC/AT and compatibles. This device provides a rugged, low-cost solution for this function with the combination of bipolar processing and 15-kV ESD protection. The SN75LP196 has internal slew-rate control to provide a maximum rate of change in the output signal of 30 V/µs. The driver output swing is clamped nominally at ±6 V to enable the higher data rates associated with this device and to reduce EMI emissions. Even though the driver outputs are clamped, they can handle voltages up to ±15 V without damage. All the logic inputs can accept 3.3-V or 5-V input signals. The SN75LP196 complies with the requirements of the TIA/EIA-232-F and the ITU v.28 standards. These standards are for data interchange between a host computer and peripheral at signaling rates up to 20 kbit/s. The switching speeds of the SN75LP196 support rates up to 256 kbit/s with lower capacitive loads (shorter cables). The SN75LP196 is characterized for operation from 0°C to 70°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PC/AT is a trademark of IBM Corporation. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 Function Tables DRIVER INPUT DA OUTPUT DY H L L H Open L RECEIVER INPUT RA OUTPUT RY H L L H Open H logic diagram (positive logic) 2 19 DY1 DA1 3 18 DY2 DA2 4 17 DY3 DA3 5 16 RA1 RY1 RY2 DA4 RY3 6 15 7 14 8 13 9 12 RA2 POST OFFICE BOX 655303 RA3 DY5 DA5 2 DY4 • DALLAS, TEXAS 75265 SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Positive supply-voltage range (see Note 1): VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 15 V Negative supply-voltage range, VSS (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to –15 V Input-voltage range, VI: Receiver (RA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 V to 30 V Driver (DA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC+0.4 V Output-voltage range, VO: Receiver (RY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6 V Driver (DY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 V to 15 V Electrostatic discharge: Bus pins (human-body model) (see Note 2) . . . . . . . . . . . . . . . . . . . Class 3, A: 15 kV All pins (human-body model) (see Note 2) . . . . . . . . . . . . . . . . . . . . . . Class 3, A: 5 kV All pins (machine model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 V Package thermal impedance, θJA (see Notes 3 and 4): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . 128°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to network ground terminal, unless otherwise noted. 2. Per MIL-STD-883 Method 3015.7 3. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. 4. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero. recommended operating conditions MIN NOM MAX UNIT 4.75 5 5.25 V 12 15 V –12 –15 V VCC VDD Supply voltage (see Note 5) Supply voltage (see Note 6) 9 VSS VIH Supply voltage (see Note 6) –9 High-level input voltage DA VIL VI Low-level input voltage DA Receiver input voltage RA IOH IOL High-level output current Low-level output current 2 V 0.8 V 25 V RY –1 mA RY 2 mA –25 TA Operating free-air temperature 0 70 °C NOTES: 5. VCC cannot be greater than VDD. 6. The device operates down to VDD = VCC and |VSS| = VCC, but supply currents increase and other parameters may vary slightly from the data-sheet limits. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 supply currents over the recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS Supply current for VCC, CC ICC Supply current for VDD, DD IDD No load load, All inputs at minimum VOH or maximum VOL Supply current for VSS, SS ISS MIN TYP MAX VDD = 9 V, VDD = 12 V, VSS = –9 V VSS = –12 V 1000 VDD = 9 V, VDD = 12 V, VSS = –9 V VSS = –12 V 800 VDD = 9 V, VDD = 12 V, VSS = –9 V VSS = –12 V –800 1000 800 –800 UNIT µA µA µA driver electrical characteristics over the recommended operating conditions (unless otherwise noted) PARAMETER VOH High level output voltage High-level VOL Low level output voltage Low-level IIH IIL High-level input current TEST CONDITIONS MIN TYP MAX VIL = 0.8 V, RL = 3 kΩ, kΩ See Figure 1 VDD = 9 V, VSS = –9 V, See Note 7 5 5.8 6.6 VDD = 12 V, VSS = –12 V, See Note 8 5 5.8 6.6 VIH = 2 V, RL = 3 kΩ, kΩ See Figure 1 VDD = 9 V, VSS = –9 V, See Note 7 –5 –5.8 –6.9 VDD = 12 V, VSS = –12 V, See Note 8 –5 –5.8 –6.9 UNIT V V Low-level input current VI at VCC VI at GND IOS(H) Short-circuit high-level output current VO = GND or VSS, See Figure 2 and Note 9 IOS(L) Short-circuit low-level output current VO = GND or VDD, See Figure 2 and Note 9 1 µA –1 µA –30 –55 mA 30 55 mA ro Output resistance VDD = VSS = VCC = 0, VO = –2 V to 2 V 300 Ω NOTES: 7. Minimum RS-232 driver output voltages are not attained with ±5-V supplies. With VDD less than VCC + 2 V, the supply currents may increase. For RS-232 compliant output swings and minimum power consumption, VDD ≥ VCC + 2 V. 8. Maximum output swing is nominally clamped at ±6 V to enable the higher data rates associated with this device and to reduce EMI emissions. The driver outputs may slightly exceed the maximum output voltage over the full VCC and temperature ranges. 9. Not more than one output should be shorted at one time. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 driver switching characteristics over operating free-air temperature range (unless otherwise noted) TEST CONDITIONS MIN TYP MAX UNIT tPHL Propagation delay time, high- to low-level output PARAMETER RL = 3 kΩ to 7 kΩ, CL = 15 pF, See Figure 1 300 800 1600 ns tPLH Propagation delay time, low- to high-level output RL = 3 kΩ to 7 kΩ, CL = 15 pF, See Figure 1 300 800 1600 ns Transition time, low- to high-level output VCC = 5 V, VDD = 12 V, VSS = –12 V, RL = 3 kΩ to 7 kΩ, See Figure 1 and Note 10 tTLH tTHL SR Transition time, high- to low-level output Output slew rate VCC = 5 V, VDD = 12 V, VSS = –12 V, RL = 3 kΩ to 7 kΩ, See Figure 1 and Note 10 VCC = 5 V, VDD = 12 V, VSS = –12 V, Using VTR = 10%-to-90% transition region, Driver speed = 250 kbit/s, CL = 15 pF 375 2240 Using VTR = ±3 V transition region, Driver speed = 250 kbit/s, CL = 15 pF 200 1500 Using VTR = ±3 V transition region, Driver speed = 125 kbit/s, CL = 2500 pF 2750 Using VTR = 10%-to-90% transition region, Driver speed = 250 kbit/s, CL = 15 pF 375 2240 Using VTR = ±3 V transition region, Driver speed = 250 kbit/s, CL = 15 pF 200 1500 Using VTR = ±3 V transition region, Driver speed = 125 kbit/s, CL = 2500 pF Using VTR = ±3 V transition region, Driver speed = 0 to 250 kbit/s, CL = 15 pF ns ns 2750 4 20 30 V/µs NOTE 10: Maximum output swing is limited to ±6 V to enable the higher data rates associated with this device and to reduce EMI emissions. receiver electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIT+ VIT– Positive-going input threshold voltage See Figure 3 1.6 2 2.55 V Negative-going input threshold voltage See Figure 3 0.6 1 1.45 V VHYS VOH Input hysteresis, VIT+ VIT– See Figure 3 750 1000 High-level output voltage 2.5 3.9 VOL Low-level output voltage IOH = –1 mA IOL = 2 mA IIH High level input current High-level VI = 3 V VI = 25 V IIL Low level input current Low-level VI = 3 V VI = 25 V IOS(H) IOS(L) Short-circuit high-level output current Short-circuit low-level output current VO = 0, VO = VCC, POST OFFICE BOX 655303 0.33 0.5 0.6 1 3.6 5.1 8.3 –0.43 –0.6 –1 –3.6 –5.1 –8.3 See Figure 5 and Note 9 Input resistance • DALLAS, TEXAS 75265 V 0.43 See Figure 5 and Note 9 VI = ±3 V to ±25 V NOTE 9: Not more than one output should be shorted at one time. RIN mV 3 5 V mA mA –20 mA 20 mA 7 kΩ 5 SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 receiver switching characteristics over operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 4) PARAMETER TYP MAX tPHL tPLH Propagation delay time, high- to low-level output MIN 400 900 Propagation delay time, low- to high-level output 400 900 tTLH tTHL Transition time, low- to high-level output 200 450 Transition time, high- to low-level output 200 400 tsk(p) Pulse skew |tPLH – tPHL| 200 425 PARAMETER MEASUREMENT INFORMATION tw Inputs 50% VI Outputs 3V 50% 0V II IO tPLH CL 50% VTR– VO VI VO RL VTR+ VTR+ tTLH NOTES: A. The pulse generator has the following characteristics: For CL < 1000 pF: tw = 4 µs, PRR = 250 kbit/s, ZO = 50 Ω, tr = tf < 50 ns. For CL = 2500 pF: tw = 8 µs, PRR = 125 kbit/s, ZO = 50 Ω, tr = tf < 50 ns. B. CL includes probe and jig capacitance. Figure 1. Driver Parameter Test Circuit and Waveform Inputs Outputs II VDD VCC IO VI GND VSS VO Figure 2. Driver IOS Test Inputs Outputs II VI IO VO Figure 3. Receiver VIT Test 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 tPHL 50% VTR– VOH VOL tTHL UNIT ns ns ns SN75LP196 LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS SLLS294A – APRIL 1998 – REVISED JUNE 1999 PARAMETER MEASUREMENT INFORMATION tw 4V VI Inputs Outputs II IO VI 50% 50% 0V tPLH VO 50% 10% VO CL 90% tPHL 90% tTLH 50% 10% VOH VOL tTHL NOTES: A. The pulse generator has the following characteristics: tw = 4 µs, PRR = 250 kbit/s, ZO = 50 Ω, tr = tf < 50 ns. B. CL includes probe and jig capacitance. Figure 4. Receiver Parameter Test Circuit and Waveform Inputs Outputs II IO VI VCC GND VO Figure 5. Receiver IOS Test APPLICATION INFORMATION Diodes placed in series with the VDD and VSS leads protect the SN75LP196 in the fault condition in which the device outputs are shorted to ±15 V and the power supplies are at low voltage and provide low-impedance paths to ground (see Figure 6). VDD Output SN75LP196 Output SN75LP196 VSS Figure 6. Power-Supply Protection to Meet Power-Off Fault Conditions of EIA/TIA-232-F POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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