www.fairchildsemi.com TMC2070P7C Parallel to RBUS Adapter Features Description • Parallel Input • RBUS Output • Fairchild demo board compatibility The TMC2070P7C RBUS adapter provides a simple interface between a computer parallel port and RBUS. It can be used with standard I2C drivers or the Fairchild Raydemo software. • Evaluation of Fairchild demo boards • System Breadboarding This adapter requires a bi-directional parallel port. Power is supplied through the connectors. Be careful when using a parallel cable with this product. Some cables flip pins between the input and output connectors which may cause undesirable results. Block Diagram RBUS Parallel Port 74LS05 Rev. 0.9.0 PRELIMINARY INFORMATION describes products that are not in full production at the time of printing. Specifications are based on design goals and limited characterization. They may change without notice. Contact Fairchild Semiconductor for current information. Preliminary Information Applications TMC2070P7C PRODUCT SPECIFICATION Preliminary Information Table 1. TMC2070P7C Parts List 2 Item Qty. Part Name Reference Designator Description 1 1 MiniReel: 444-810 C1 10uf 16v 2 1 SN74LS05DN U1 IC, 74LS05 surface mount 3 1 RS6A103G 4 1 5 1 RN1 10k ohm 6 pin Sip res. AMP: 747842-4 P1 25 pin D Sub connector Molex: 444-810 P2 ACCESS bus Plug PRODUCT SPECIFICATION TMC2070P7C Schematic VCC P1 RN1 10K + C1 10µF CONNECTOR DB25 2 3 4 5 6 P2 U1A 2 1 4 3 2 1 Preliminary Information 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 1 SCL +5V SDA GND 74LS05 15-83-0064 U1B 4 3 74LS05 U1C 6 5 74LS05 J1 1 2 3 4 CON4 Figure 1. TMC2070P7C Related Products • TMC2068P7C Decoder demonstration board • Raydemo software 3 TMC2070P7C PRODUCT SPECIFICATION Ordering Information Product Number Temperature Range Speed Grade Screening Package Package Marking TMC2070P7C 25°C 100 KHz Commercial 1" by 2" Printed Circuit Board TMC2070P7C A schematic database is available in OrCADä format. Contact the factory. Preliminary Information The TMC2070P7C Demonstration Board, design documentation, and software are provided as a design example for the customers of Fairchild. Fairchild makes no warranties, express, statutory, or implied regarding merchantability or fitness for a particular purpose. All parameters contained in this specification are guaranteed by design, characterization, sample testing or 100% testing as appropriate. Fairchild reserves the right to change products and specifications without notice. This information does not convey any license under patent rights of Fairchild Company or others. FCC Compliance This device has not been approved by the Federal Communications Commission (FCC). This board is intended for the evaluation of Fairchild products only. This device is not and may not be offered for sale or lease or sold or leased until the approval of the FCC has been obtained. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 5/20/98 0.0m 001 Stock# DS7002070P Ó 1998 Fairchild Semiconductor Corporation