ST26C31 CMOS QUAD TRI-STATE DIFFERENTIAL LINE DRIVER ■ ■ ■ ■ ■ ■ ■ ■ ■ TTL INPUT COMPATIBLE TYPICAL PROPAGATION DELAY: 6ns TYPICAL OUTPUT SKEW: 0.5ns OUTPUT WILL NOT LOAD LINE WHEN VCC=0V MEETS THE REQUIREMENTS OF EIA STANDARD RS-422 OPERATION FROM SINGLE 5V SUPPLY 3-STATE OUTPUTS FOR CONNECTION TO SYSTEM BUSES LOW QUIESCENT CURRENT AVAILABLE IN SURFACE MOUNT DESCRIPTION The ST26C31 is a quad differential line driver designed for digital data transmission over balanced lines and meets all the requirements of EIA standard RS-422 while retaining the low power characteristics of CMOS. The ST26C31 accepts TTL or CMOS input levels and translates these to RS-422 output levels. This part uses special outputs circuitry common to all four drivers. All outputs are protected against damage due to electrostatic discharge by diode to VCC and ground. DIP SOP TSSOP ORDERING CODES Type ST26C31BN ST26C31BD ST26C31BDR ST26C31BTR December 2002 Temperature Range -40 -40 -40 -40 to 85 to 85 to 85 to 85 °C °C °C °C Package Comments DIP-16 SO-16 (Tube) SO-16 (Tape & Reel) TSSOP16 (Tape & Reel) 25 parts per tube / 40 tube per box 50 parts per tube / 20 tube per box 2500 parts per reel 2500 parts per reel 1/10 ST26C31 PIN CONFIGURATION PIN DESCRIPTION PlN N° SYMBOL 1 AIN 2 AOUT Channel A Output 3 AOUT Channel A Output 4 5 EN BOUT ENABLE Channel B Output 6 BOUT Channel B Output 7 BIN 8 GND NAME AND FUNCTION INPUT A INPUT B Ground INPUT C 9 CIN 10 COUT Channel C Output 11 COUT Channel C Output 12 13 EN DOUT ENABLE Channel D Output 14 DOUT Channel D Output 15 DIN INPUT D 16 VCC Supply Voltage TRUTH TABLE ENABLE ENABLE INPUT OUTPUT OUTPUT L H X L H Z L H Z H L All other combinations of enable inputs L = Low Voltage State H = High Logic State X = Don’t Care Z = High Impedance 2/10 ST26C31 ABSOLUTE MAXIMUM RATINGS (Note 1, 2) Symbol Parameter VCC Supply Voltage VIN DC Input Voltage VOUT IIK DC Output Voltage (High or Low State) Clamp Diode Current Value Unit -0.5 to 7 V -0.5 to (VCC + 0.5) V -0.5 to 7 V ± 20 mA IOUT DC Output Current per Pin ± 150 mA ICC DC VCC or GND Current ± 150 mA Tstg Storage Temperature Range -65 to +150 °C 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 device should be operated at these limits. The table of electrical characteristics provide conditions for actual device operation. Note 2: Unless otherwise specified, all voltage are referenced to ground. All currents into the device pins are positive; all currents out of the device pins are negative. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit VCC Supply Voltage 4.5 to 5.5 V VIN DC Input Voltage 0 to VCC V VOUT DC Output Voltage (High or Low State) 0 to VCC V VOUT DC Output Voltage (VCC = 0V or High Impedance) 0 to 5 V -40 to +85 °C 500 ns TA Operating Temperature Range tr, tf Maximum Enable Input Rise or Fall Times 3/10 ST26C31 ELECTRICAL CHARACTERISTICS (VCC = 5V ± 10%, unless otherwise specified, See Note 1) Value Symbol Parameter Test Conditions Unit Min. VIH High Level Input Voltage VIL Low Level Input Voltage VOH High Level Output Voltage VOL VT Max. 2 V 0.8 VIN = VIH or VIL, IOUT = -20mA Low Level Output Voltage VIN = VIH or VIL, IOUT = +20mA Differential Output Voltage RL = 100 Ω (Note 2) Difference in Differential Output Voltage Common Mode Output Voltage Difference in Common Mode Output Voltage RL = 100 Ω (Note 2) IIN ICC VT-VT Typ. 2.5 3.4 0.3 2 V V 0.5 3.1 V V 0.4 V 3 V RL = 100 Ω (Note 2) 0.4 V Input Current VIN = VCC, GND, VIH or VIL ±1 µA Quiescent Supply Current (Note 2) IOUT = 0 µA IOZ 3-STATE Output Leakage Current VOUT = VCC or GND ENABLE = VIH ENABLE = VIL ISC Output Short Circuit Current VIN = VCC or GND (Notes 2, 4) IOFF Power Off Output Leakage Current (Note 2) VOS VOSVOS RL = 100 Ω (Note 2) VCC = 0 V 1.8 VIN = VCC or GND 200 500 µA VIN = 2.4 or 0.5 V (Note 3) 0.8 2 mA ±0.5 ±5 µA -150 mA VOUT = 6 V 100 µA VOUT = -0.25 V -100 µA -30 Note 1: Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for VCC = 5V and Ta = 25°C Note 2: See EIA Specification RS422 for exact test conditions. Note 3: Measured per pin input. All other input at VCC or GND. Note 4: This is the current sourced when a high output is shorted to ground. Only one output at time should be shorted. SWITCHING CHARACTERISTICS (VCC = 5V ± 10%, tr = tf ≤ 6ns, See Note 1) Value Symbol tPLH tPHL Skew Parameter Test Conditions Propagation Delay Input to Output S1 Open (Note 2) S1 Open 2 6 11 ns 2 ns 10 ns S1 Closed 11 19 ns S1 Closed 13 21 ns S1 Closed 5 9 ns S1 Closed 7 11 ns tPZH Output Enable Time tPZL Output Enable Time tPHZ Output Disable Time (Note 3) Output Disable Time (Note 3) Power Dissipation Capacitance (Note 4) Input Capacitance CIN Max. 6 Differential Output Rise and S1 Open Fall Times CPD Typ. 0.5 tTLH tTHL tPLZ Unit Min. 50 pF 6 pF Note 1: Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for VCC=5V and Ta = 25°C Note 2: Skewis defined as the difference in propagation delays between complementary outputs at the 50% point. Note 3: Output disable time is the delay from the control input being switched to the output transistors tuming off. The actual disable times are less than indicated due to the delay added by RC time constant of the load. Note 4: CPD determines the no load dynamic power consumption, PD = CPD V2CCf = ICCVCC, and the no load dynamic current consumption, PD = CPD VCCf + ICC 4/10 ST26C31 Plastic DIP-16 (0.25) MECHANICAL DATA mm. inch DIM. MIN. a1 0.51 B 0.77 TYP MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.050 P001C 5/10 ST26C31 SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.004 0.008 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45˚ (typ.) D 9.8 10 0.385 0.393 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 8 0.024 ˚ (max.) PO13H 6/10 ST26C31 TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 7/10 ST26C31 Tape & Reel SO-16 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 8/10 TYP 0.504 22.4 0.519 0.882 Ao 6.45 6.65 0.254 0.262 Bo 10.3 10.5 0.406 0.414 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 ST26C31 Tape & Reel TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 9/10 ST26C31 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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