HT6571 Multiple RS-232 Drivers and Receivers Features · Single-chip with easy interface between UART and · Driver current-limited output: 25mA typ. serial port connector · Flexible supply voltage range · Three drivers and five receivers meet or exceed the · ESD protection exceeds 5kV requirements of EIA/TIA-232-D · 20-pin SOP package · Designed to support data rates up to 120 Kbit/s General Description The HT6571 is a CMOS device containing three RS-232 line drivers, and five RS-232 line receivers that are used to interface data terminal equipment (DTE) with data circuit-terminating equipment (DCE). Block Diagram Pin Assignment R A 1 R A 2 R A 3 D Y 1 R Y 1 R Y 2 R Y 3 D A 1 D Y 2 D A 2 R A 4 R Y 4 D Y 3 D A 3 R A 5 R Y 5 V D D 1 2 0 V C C R A 1 2 1 9 R Y 1 R A 2 3 1 8 R Y 2 R A 3 4 1 7 R Y 3 D Y 1 5 1 6 D A 1 D Y 2 6 1 5 D A 2 R A 4 7 1 4 R Y 4 D Y 3 8 1 3 D A 3 R A 5 9 1 2 R Y 5 V S S 1 0 1 1 G N D H T 6 5 7 1 2 0 S O P -A Absolute Maximum Ratings Supply Voltage (VSS VDD).......................... -15V~15V Supply Voltage (GND VCC) ....................... -0.3V~5.5V Input Voltage Driver .......................................... 0V~7V Receiver ...................................................... -15V~15V Output Voltage Driver .................................. -15V~15V Receiver ............................................................ 0V~7V Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev. 1.20 1 August 20, 2002 HT6571 Electrical Characteristics Symbol Paremeter Test Conditions VDD VCC Conditions Min. Typ. Max. Unit VDD Operation Voltage ¾ ¾ ¾ 7.5 9 15 V VSS Operation Voltage ¾ ¾ ¾ -7.5 -9 -15 V VCC Operation Voltage ¾ ¾ ¾ 4.5 5 5.5 V VIH1 Driver Input High 12V 5V 2 ¾ ¾ V VIL1 Driver Input Low 12V 5V ¾ ¾ 0.8 V VIH2 Receiver Input High 12V 5V 3 ¾ ¾ V VIL2 Receiver Input Low 12V 5V ¾ ¾ 0 V IOH1 Receiver Output Source Current 12V 5V VO=2.4V -1 -2 -3 mA IOL1 Receiver Output Sink Current 12V 5V VO=0.4V +1 +2 +3 mA IOS(H) High-level Driver Short Current 12V 5V VO=0V -15 -25 -35 mA IOS(L) Low-level Driver Short Current 12V 5V VO=0V 15 25 35 mA SR1 Slew Rate 12V 5V RL=7kW, C1=330pF ¾ ¾ 30 V/ms Rev. 1.20 2 August 20, 2002 HT6571 Application Circuits Rev. 1.20 3 August 20, 2002 HT6571 4 D 2 D 1 Rev. 1.20 August 20, 2002 HT6571 Package Information 20-pin SOP (300mil) outline dimensions 1 1 2 0 A B 1 1 0 C C ' G H D E Symbol Rev. 1.20 = F Dimensions in mil Min. Nom. Max. A 394 ¾ 419 B 290 ¾ 300 C 14 ¾ 20 C¢ 490 ¾ 510 D 92 ¾ 104 E ¾ 50 ¾ F 4 ¾ ¾ G 32 ¾ 38 H 4 ¾ 12 a 0° ¾ 10° 5 August 20, 2002 HT6571 Product Tape and Reel Specifications Reel dimensions D T 2 A C B T 1 SOP 20W Symbol Description Dimensions in mm A Reel Outer Diameter 330±1.0 B Reel Inner Diameter 62±1.5 C Spindle Hole Diameter 13.0+0.5 -0.2 D Key Slit Width 2.0±0.5 T1 Space Between Flange 24.8+0.3 -0.2 T2 Reel Thickness 30.2±0.2 Rev. 1.20 6 August 20, 2002 HT6571 Carrier tape dimensions P 0 D P 1 t E F W C D 1 B 0 P K 0 A 0 SOP 20W Symbol Description Dimensions in mm W Carrier Tape Width 24.0+0.3 -0.1 P Cavity Pitch 12.0±0.1 E Perforation Position 1.75±0.1 F Cavity to Perforation (Width Direction) 11.5±0.1 D Perforation Diameter 1.5+0.1 D1 Cavity Hole Diameter 1.5+0.25 P0 Perforation Pitch 4.0±0.1 P1 Cavity to Perforation (Length Direction) 2.0±0.1 A0 Cavity Length 10.8±0.1 B0 Cavity Width 13.3±0.1 K0 Cavity Depth 3.2±0.1 t Carrier Tape Thickness 0.3±0.05 C Cover Tape Width Rev. 1.20 21.3 7 August 20, 2002 HT6571 Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor (China) Inc. (Dongguan Sales Office) Building No. 10, Xinzhu Court, (No. 1 Headquarters), 4 Cuizhu Road, Songshan Lake, Dongguan, China 523808 Tel: 86-769-2626-1300 Fax: 86-769-2626-1311 Holtek Semiconductor (USA), Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538 Tel: 1-510-252-9880 Fax: 1-510-252-9885 http://www.holtek.com Copyright Ó 2002 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.20 8 August 20, 2002