ST26C32A CMOS quad tri-state differential line receiver General features ■ CMOS design for low power ■ ±0.2V sensitivity over input common mode voltage range ■ Typical propagation delay: 19ns ■ Typical input hysteresis: 60mV ■ Input will not load line when VCC = 0V ■ Meets the requirements of EIA standard RS-422, RS-423 ■ 3-state outputs for connection to system buses ■ Available in surface mount DIP-16 SO-16 TSSOP16 Description The ST26C32A is a quad differential line receiver designed to meet the RS-422, RS-423 standards for balanced and unbalanced digital data transmission, while retaining the low power characteristics of CMOS. The ST26C32A has an input sensitivity of 200mV over the common mode input voltage range of ±7V. The ST26C32A features internal pull-up and pull-down resistors which prevent output oscillation on unused channels. The ST26C32A provides an enable and disable function to all four receivers and features 3-STATE output with 6mA source and sink capability. Order code Part number Temperature range Package Packaging ST26C32ABN -40 to 85 °C DIP-16 25 parts per tube / 40 tube per box ST26C32ABDR -40 to 85 °C SO-16 (Tape & Reel) 2500 parts per reel ST26C32ABTR -40 to 85 °C TSSOP16 (Tape & Reel) 2500 parts per reel May 2006 Rev 3 1/15 www.st.com 15 Contents ST26C32A Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 ST26C32A Pin configuration 1 Pin configuration Figure 1. Pin connections Table 1. Pin description Pin n° Symbol Name and function 1 AIN1 INPUT A1 2 AIN2 INPUT A2 3 AOUT Channel A Output 4 EN 5 BOUT Channel B Output 6 BIN2 INPUT B2 7 BIN1 INPUT B1 8 GND Ground 9 CIN1 INPUT C1 10 CIN2 INPUT C2 11 COUT Channel C Output 12 EN 13 DOUT Channel D Output 14 DIN2 INPUT D2 15 DIN1 INPUT D1 16 VCC Supply Voltage ENABLE ENABLE 3/15 Pin configuration Table 2. ST26C32A Truth table Enable Enable Input Output L H X Z VID ≥ VTH(MAX) H VID ≤ VTH(MIN) L Open H All other combinations of enable inputs Note: 4/15 L = Low Voltage State H = High Logic State X = Don’t Care Z = High Impedance ST26C32A Maximum ratings 2 Maximum ratings Table 3. Absolute maximum ratings (Note: 1, Note 2) Symbol Parameter Value Unit 7 V VCC Supply voltage VCM Input common mode range ± 14 V VDIFF Differential input voltage ± 14 V 7 V VIN Enable input voltage IOMAX Maximum current per output ± 25 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. 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. Table 4. Recommended operating conditions Symbol Value Unit Supply voltage 4.5 to 5.5 V TA Operating temperature range -40 to +85 °C tr, tf Maximum enable input rise or fall times 500 ns VCC Parameter 5/15 Electrical characteristics ST26C32A 3 Electrical characteristics Table 5. Electrical characteristics (VCC = 5V ± 10%, unless otherwise specified, See Note: 1) Value Symbol Parameter Test Conditions Unit Min. Typ. Max. -200 35 200 mV 5 6.8 10 KΩ VIN = 10V, other input = GND 1.1 1.5 VIN = -10V, other input = GND -2 -2.5 VTH Minimum differential input voltage VOUT = VOH or VOL, -7V < VCM < 7V RIN Input resistance VIN = -7V, 7V, other input = GND IIN Input current mA VOH High level output voltage VDIFF = 1V, IOUT = -6mA VOL Low level output voltage VDIFF = -1V, IOUT = 6mA VIH Minimum enable high input level voltage VIL Minimum enable low input level voltage IOZ 3-STATE Output leakage current VOUT = VCC or GND ENABLE = VIL, ENABLE = VIH Maximum enable input current VIN = VCC or GND Quiescent power supply current VCC = Max, V(DIFF) = 1V 16 Input hysteresis VCM = 0V 60 II ICC VHYST Note: 6/15 1 3.8 4.2 0.2 V 0.3 2 V V ±0.5 0.8 V ±5 µA ±1 µA 23 mA Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for VCC = 5V and TA = 25°C mV ST26C32A Electrical characteristics Switching characteristics (VCC = 5V ± 10%, see Note 1) Table 6. Value Symbol Parameter Test Conditions Unit Min. Typ. Max. tPLH tPHL Propagation delay input to CL = 50pF, VDIFF = 2.5V, VCM = 0V output 19 30 ns tRISE tFALL Output rise and fall times CL = 50pF, VDIFF = 2.5V, VCM = 0V 4 9 ns tPZH tPZL Propagation enable time to output CL = 50pF, VDIFF = 2.5V, RL = 1000Ω 13 23 ns tPHZ tPLZ Propagation disable time to output CL = 50pF, VDIFF = 2.5V, RL = 1000Ω 13 22 ns DR Data rate VDIFF = 2.5V CL = 50pF All outputs loaded and switching Note: 1 10 20 Mbits/s Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for VCC=5V and TA = 25°C 7/15 Package mechanical data 4 ST26C32A Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 8/15 ST26C32A Package mechanical data 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 9/15 Package mechanical data ST26C32A SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.25 a2 MAX. 0.004 0.010 1.64 0.063 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 0.024 8° (max.) 0016020D 10/15 ST26C32A Package mechanical data 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 11/15 Package mechanical data ST26C32A 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 12/15 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 ST26C32A Package mechanical data 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 13/15 Revision history ST26C32A 5 Revision history Table 7. Revision history Date Revision 02-May-2006 3 14/15 Changes Order codes has been updated and new template. ST26C32A Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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