UTC 75323 LINEAR INTEGRATED CIRCUIT MULTIPLE RS-232 DRIVERS AND RECEIVERS DESCRIPTION The UTC 75323 combines five drivers and three receivers. The flow-through design of the UTC 75323 decreases the part count, reduces the board space required, and allows easy interconnection of the UART SOP-20 and serial-port connector. The all-bipolar circuits and processing of the UTC 75323 provide a rugged, low-cost solution for this function. The UTC 75323 complies with the requirements of the ANSI TIA/EIA-232-Fand ITU (formerly CCITT) V.28 standards. These standards are for data interchange between a host computer and a DIP-20 peripheral at signal rates up to 20 Kbit/s. The switching speeds of the UTC 75323 are fast enough to support rates up to 120 kbit/s with lower capacitive loads (shorter cables). Interoperability at the higher signaling rates cannot be assured unless the designer has design control of the cable and the interface circuits at both ends. For interoperability at signaling rates up to 120 kbit/s, use of ANSI Standard TIA/EIA-423-B and TIA/EIA-422-B and ITU Recommendations V.10 and V.11 are recommended. The UTC 75323 is characterized for operation over a temperature range of 0℃ to 70℃. FEATURES *Single Chip With Easy Interface Between UART and Serial-Port Connector of an External Modem or Other Computer Peripheral *Five Drivers and Three Receivers Meet or Exceed the Requirements of ANSI Standard TIA/EIA-232-F and ITU Recommendation V.28 Standards. *Supports Data Rates up to 120 kbit/s. *Complement to the UTC 75232. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION Vcc 1 20 VDD 1DA 2 19 1DY 2DA 3 18 2DY 3DA 4 17 3DY 1RY 5 16 1RA 2RY 6 15 2RA 4DA 7 14 4DY 3RY 8 13 3RA 5DA 9 12 5DY GND 10 11 Vss LOGIC SYMBOL * 1DA 2DA 3DA 1RY 2RY 4DA 3RY 5DA LOGIC DIAGRAM ( POSITIVE LOGIC ) 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 1DY 2DY 3DY 1RA 2RA 4DY 3RA 5DY 1DA 2DA 3DA 1RY 2RY 4DA 3RY 5DA 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 1DY 2DY 3DY 1RA 2RA 4DY 3RA 5DY * This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT SCHEMATIC (EACH DRIVER) To Other Drivers VDD 11.6kΩ 9.4kΩ Input DAx 75.8Ω 320Ω DYx Output 4.2kΩ GND To Other Drivers 10.4kΩ 3.3kΩ 68.5Ω Vss To Other Drivers Resistor values shown are nominal. SCHEMATIC (EACH RECEIVER) To Other Receivers Vcc 9kΩ 1.66kΩ 5kΩ RYx Output 2kΩ Input RAx 3.8kΩ 10kΩ GND To Other Receivers Resistor values shown are nominal. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25℃) PARAMETER SYMBOL RATINGS UNIT Vcc VDD Vss 10 15 -15 -15 ~ 7 -30 ~ 30 -15 ~ 15 V V V V 20 mA 97 67 °C/W 260 °C -65 ~ 150 °C Supply voltage (see Note 1) Supply voltage (see Note 1) Supply voltage (see Note 1) Input voltage range: Driver Receiver Output voltage range, (Driver) VI Vo Low-level output current (Receiver) IOL Package thermal impedance θJA SOP-20 DIP-20 Lead temperature 1.6mm(1/6 inch) from case Tlead for 10 seconds Storage temperature range Tstg note: 1. All voltages are with respect to the network ground terminal. V RECOMMENDED OPERATING CONDITIONS PARAMETER Supply voltage High-level input voltage Low-level input voltage High-level output current Driver Driver Driver Receiver Driver Receiver High-level output current, Operating free-air temperature SYMBOL MIN TYP MAX UNIT VDD Vss Vcc VIH VIL 7.5 -7.5 4.5 1.9 9 -9 5 13.5 -13.5 5.5 V IOH IOL Ta 0 V V 0.8 -6 -0.5 6 16 70 mA mA ℃ SUPPLY CURRENTS OVER OPERATING FREE-AIR TEMPERATURE RANGE PARAMETER SYMBOL Supply current from VDD IDD Supply current from Vss Iss Suppy current from Vcc UTC TEST CONDITIONS All inputs at 1.9V, No load Icc VDD=9V, Vss=-9V VDD=12V, Vss=-12V All inputs at 0.8V, No load VDD=9V, Vss=-9V VDD=12V, Vss=-12V All inputs at 1.9V, No load VDD=9V, Vss=-9V VDD=12V, Vss=-12V All inputs at 0.8V, No load VDD=9V, Vss=-9V VDD=12V, Vss=-12V Vcc=5V,All inputs at 5V, No load MIN MAX 25 32 7.5 9.5 -25 -32 -5.3 -5.3 20 UNISONIC TECHNOLOGIES CO., LTD. UNIT mA mA mA mA mA 4 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURE RANGE,VDD=9V,Vss=-9V,Vcc=5V (UNLESS OTHERWISE NOTED) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT High-level output voltage VOH VIL=0.8V,RL=3kΩ (See Figure 1) 6 7.5 V Low-level output voltage(see Note 2) VOL VIH=1.9V,RL=3kΩ (See Figure 1) -7.5 -6 V IIH High-level Input current VI=5V (See Figure 2) 10 μA Low-level input current IIL VI=0 (See Figure 2) -1.6 mA High-level short-circuit output current VIL=0.8V,Vo=0 (See Figure 1) IOS(H) -4.5 -9 -19.5 mA (see Note 3) Low-level short-circuit output current IOS(L) VIH=2V,Vo=0 (See Figure 1) 4.5 9 19 mA ro Vcc=VDD=Vss=0,Vo=-2V to 2V Output resistance (see Note 4) 300 Ω Notes: 2.The algebraic convention, where the more positive(less negative) limit is designated as maximum, is used in this data sheet for logic levels only,e.g.,if-10V is maximum, the typical value is a more negative voltage. 3.Output short-circuit conditions must maintain the total power dissipation below absolute maximum ratings. 4.Test conditions are those specified by TIA/EIA-232-F and as listed above. SWITCHING CHARACTERISTICS (Ta=25℃,VDD=12V,Vss=-12V,Vcc=5V±10%) PARAMETER Propagation delay time, low- to high-level output Propagation delay time, high-to low-level output SYMBOL tPLH TEST CONDITIONS MIN RL=3kΩ to 7kΩ, CL=15pF (See Figure 3) TYP MAX UNIT 315 500 75 175 ns tPHL RL=3kΩ to 7kΩ, CL=15pF 60 100 ns (See Figure 3) tTLH RL=3kΩ to 7kΩ, CL=2500pF μs 1.7 2.5 (See Figure 3 and Note 5) RL=3kΩ to 7kΩ, CL=15pF 40 75 ns (See Figure 3) Transition time, high-to low-level output tTHL RL=3kΩ to 7kΩ, CL=2500pF μs 1.5 2.5 (See Figure 3 and Note 6) Note: 5. Measured between-3-V and 3-V points of the output waveform (TIA/EIA-232-F conditions),all unused inputs are tied either high or low. 6. Measured between 3-V and –3-V points of the output waveform (TIA/EIA-232-F conditions),all unused inputs are tied either high or low TTLH Transition time, low-to high-level output ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING CONDITIONS (UNLESS OTHERWISE NOTED) PARAMETER Positive-going input threshold voltage Negative-going input threshold voltage Input hysteresis voltage(VIT+ - VIT-) High-level output voltage SYMBOL VIT+ TEST CONDITIONS See Figure5 Ta=25℃ Ta=0℃ to 70℃ VITVhys See Figure5 VOH IOH=-0.5mA VIH=0.75V Inputs open Low-level output voltage VOL IOL=10mA,VI=3V VI=25V. High-level input current IIH VI=3V VI=-25V Low-level input current IIL VI=-3V Short-circuit output current Ios See Figure 4 * All typical values are at Ta=25℃,Vcc=5V,VDD=9V,Vss=-9V UTC MIN 1.75 1.55 0.75 0.5 2.6 TYP* MAX UNIT 1.9 0.97 2.3 2.3 1.25 4 5 0.2 0.45 8.3 V V 2.6 3.6 0.43 -3.6 -0.43 -8.3 -3.4 -12 UNISONIC TECHNOLOGIES CO., LTD. V dB mA mA mA mA 5 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT SWITCHING CHARACTERISTICS (Ta=25℃,VCC=5V,VDD=12V,VSS= -12V) PARAMETER SYMBOL Propagation delay time, low-to high-level output Propagation delay time, high- to low-level output Transition time, low-to high-level output Transition time, high- to low-level output tPLH tPHL tTLH tTHL TEST CONDITIONS MIN CL=50pF,RL=5kΩ See Figure 6 TYP MAX UNIT 107 42 175 16 500 150 525 60 ns ns ns ns PARAMETER MEASUREMENT INFORMATION IOS(L) VDD Vcc VDD or GND -IOS(H) Vss or GND VI VDD Vcc IIH VI -IIL Vo RL=3kΩ VI Vss Vss Figure 1. Driver Test Circuit for VOH,VOL,IOS(H),and IOS(L) Figure 2. Driver Test Circuit for IIH and IIL 3V VDD Vcc 1.5V Input Input pulse Generator 1.5V 0V tPHL Vo RL See Note B CL ( see Note A ) tPLH 90% 50% 10% 50% 10% Output Vss VOH 90% VOL tTLH tTHL TEST CIRCUIT VOLTAGE WAVEFORMS NOTES:A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics(tW =25μs,PRR=20kHz,Zo=50Ω,tr=tf<50ns) Figure 3. Driver Test Circuit and Voltage Waveforms VDD Vcc VDD Vcc -IOS -IOH VIT,VI VI VOH VOL Vss Vss Figure 4. Receiver Test Circuit for Ios UTC IOL Figure 5. Receiver Test Circuit for VIT,VOH,and VOL UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT 5V VDD Input Vcc 50% 50% -5V Input tPHL pulse Generator tPLH Vo RL See Note B 90% CL (see Note A) Vss 50% 10% 50% 10% Output VOH 90% VOL tTLH tTHL VOLTAGE WAVEFORMS TEST CIRCUIT NOTES: A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics(tW =25μs,PRR=20kHz,Zo=50Ω,tr=tf<50ns) Figure 6. Receive Propagation and Transition Times TYPICAL CHARACTERISTICS DRIVER SECTION VOLTAGE-TRANSFER CHARACTERISTICS 12 9 16 VDD=9V,Vss=-9V Output Current, Io (mA) Output Voltage , Vo ( V ) OUTPUT CURRENT VS OUTPUT VOLTAGE 20 VDD=12V,Vss=-12V 6 VDD=6V,Vss=-6V 3 0 -3 -6 RL=3kΩ TA=25°C -9 9 Ios(L) (VI=1.9V) 3 VDD=9V Vss=-9V Vo=0 -3 -6 0 -4 -8 3-kΩLoad Line -12 1000 6 0 4 VOH(VI=0.8V) -20 -16 -12 Slew Rate, SR (V/μs) Shourt-Circuit Output Current, Ios (mA) SHORT-CIRCUIT OUTPUT CURRENT VS FREE-AIR TEMPERATURE VOL(VI=1.9V) 8 -16 -12 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Input Voltage, VI (V) 12 12 VDD=9V Vss=-9V TA=25°C 8 -8 -4 0 4 Output Voltage, Vo (V) 12 16 SLEW RATE VS LOAD CAPACITANCE VDD=9V Vss=-9V RL=3kΩ TA=25°C 100 10 Ios(H) (VI=0.8V) -9 -12 0 10 20 30 40 50 60 Free-Air Temperature, TA (°C) UTC 70 1 10 100 1000 Load Capacitance, CL (pF) UNISONIC TECHNOLOGIES CO., LTD. 10000 7 QW-R113-007,A UTC 75323 SHORT-CIRCUIT OUTPUT CURRENT VS FREE-AIR TEMPERATURE INPUT THRESHOLD VOLTAGE VS SUPPLY VOLTAGE 2 2.2 2 Input Threshold Voltage, VIT (V) Input Threshold Voltage, VIT (V) 2.4 VIT+ 1.8 1.6 1.4 1.2 VIT- 1.0 0.8 0.6 0.4 0 10 20 30 40 50 60 Free-Air Temperature, Ta (°C) 1.8 1.6 VIT+ 1.4 1.2 1 0.8 0.6 VIT- 0.4 0.2 0 70 MAXIMUM SUPPLY VOLTAGE VS FREE-AIR TEMPERATURE 16 2 3 9 4 5 8 7 6 Supply Voltage, Vcc (V) 14 VCC=5V TA=25°C See Note A 5 12 10 8 6 Cc=300pF 4 Cc=500pF 3 Cc=12pF 2 4 Cc=100pF 1 2 0 10 NOISE REJECTION 6 Amplitude ( V) Maximum Supply Voltage, VDD ( V) LINEAR INTEGRATED CIRCUIT RL≧3kΩ(from each output to GND) 0 10 20 30 40 50 60 Free-Air Temperature, Ta(°C) 70 0 10 40 100 400 1000 4000 10000 Pulse Duration, tw (ns) NOTE A: This figure shows the maximum amplitude of a positive-going pulse that, starting from 0V, does not cause a change of the output level. UTC UNISONIC TECHNOLOGIES CO., LTD. 8 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION Diodes placed in series with the VDD and Vss leads protect the UTC GD75323 in the fault condition in which the device output are shorted to VDD or Vss, and the Power supplies are at low and provide low-impedance paths to ground(see Figure 15) VDD Output ±15V 75323 VDD 75323 Vss Vss Figure 7. Power-Supply Protection to Meet Power-Off Fault Condition of TIA/EIA-232-F TIA/EIA-232-F DB9S CONNECTOR TL16C450 ACE RI DTR CTS SO RTS SI DSR DCD -12V 10 43 9 37 8 40 7 13 6 36 5 11 4 41 3 42 2 1 GND Vss 5DA 5DY 3RY 3RA 4DA 4DY 2RY 1RY UTC 75323 2RA 1RA 3DA 3DY 2DA 2DY 1DA 1DY Vcc VDD 11 12 RI 13 DTR 14 CTS 5 15 TX 16 RTS 17 RX 18 DSR 19 DCD 20 12V 9 C5* C4* C3* 6 C2* C1* 1 5V *See Figure10 to select the correct values for the loading capacitors(C1,C2,C3,C4 and C5),which may be required to meet the RS-232 maximum slew-rate requirement of 30V/us.The value of the loading capacitors res required depends upon the line length and desired slew rate,but is typically 330pF. NOTE C:To use the receivers only,VDD and Vss both must be powered or tied to ground. Figure 8. Typical Connection UTC UNISONIC TECHNOLOGIES CO., LTD. 9 QW-R113-007,A UTC 75323 LINEAR INTEGRATED CIRCUIT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 10 QW-R113-007,A