DS3667 TRI-STATEÉ Bidirectional Transceiver General Description Features The DS3667 is a high-speed Schottky 8-channel bidirectional transceiver designed for digital information and communication systems. Pin selectable totem-pole/open collector outputs are provided at all driver outputs. This feature, together with the Dumb Mode which puts both driver and receiver outputs in TRI-STATE at the same time, means higher flexibility of system design. PNP inputs are used at all driver inputs for minimum loading, and hysteresis is provided at all receiver inputs for added noise margin. A power up/down protection circuit is included at all outputs to provide glitch-free operation during VCC power up or down. Y Y Y Y Y Y Y Y Y 8-channel bidirectional non-inverting transceivers Bidirectional control implemented with TRI-STATE output design High speed Schottky design Low power consumption High impedance PNP inputs (drivers) Pin selectable totem-pole/open collector outputs (drivers) 500 mV (typ) input hysteresis (receivers) Power up/down protection (glitch-free) Dumb Mode capability Connection Diagram Dual-In-Line Package TL/F/5245 – 1 Top View Order Number DS3667N See NS Package Number N20A TRI-STATEÉ is a registered trademark of National Semiconductor Corp. C1996 National Semiconductor Corporation TL/F/5245 RRD-B30M36/Printed in U. S. A. http://www.national.com DS3667 TRI-STATE Bidirectional Transceiver February 1996 Logic Diagram Functional Truth Table Control Input Level Data Transceivers TE PE Mode Bus Port Terminal Port H H T Totem-Pole Output Input H L T Open Collector Output Input L H R Input Output L L D TRI-STATE TRI-STATE H: High Level Input L: Low Level Input T: Transmitting Mode R: Receiving Mode D: Dumb Mode TL/F/5245–2 http://www.national.com 2 Absolute Maximum Ratings (Note 1) Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. VCC, Supply Voltage TA, Ambient Temperature IOL, Output Low Current Bus Terminal Supply Voltage (VCC) 7.0V Input Voltage 5.5V b 65§ C to a 150§ C Storage Temperature Range Maximum Power Dissipation* at 25§ C Molded Package 1832 mW Lead Temperature (Soldering, 4 seconds) 260§ C Min 4.75 Max 5.25 Units V 0 70 §C 48 16 mA mA *Derate molded package 14.7 mW/§ C above 25§ C. Electrical Characteristics (Notes 2 and 3) Symbol Parameter VIH High Level Input Voltage VIL Low Level Input Voltage VIK Input Clamp Voltage VHYS Input Hysteresis Bus VOH High Level Output Voltage Terminal VOL IIH Conditions Min Units 0.8 V 2 II e b18 mA V b 0.8 b 1.5 500 IOH e b800 mA 2.7 3.5 Bus IOH e b5.2 mA 2.5 3.4 Low Level Output Voltage Terminal IOL e 16 mA 0.3 0.5 Bus IOL e 48 mA 0.4 0.5 High Level Input Current TE, PE VI e 5.5V 0.2 100 VI e 2.7V 0.1 20 Low Level Input Current IOS Short Circuit Output Current Terminal and Bus VI e 4V Terminal and TE, PE VI e 0.5V Terminal Bus-Port Capacitance Bus V V mA VI e 2V, VO e 0V (Note 4) Bus Supply Current V mV 200 Bus CIN Max 400 IIL ICC Typ b 10 b 100 mA mA b 0.4 b 1.0 b 15 b 35 b 75 b 50 b 120 b 200 Transmit, TE e 2V, PE e 2V, VI e 0.8V 75 100 Receive, TE e 0.8V, PE e 2V, VI e 0.8V 65 90 VCC e 0V, VI e 0V, f e 10 kHz (Note 5) 20 30 mA mA pF 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’’ provides conditions for actual device operations. Note 2: Unless otherwise specified, min/max limits apply across the 0§ C to a 70§ C temperature range and the 4.75V to 5.25V power supply range. All typical values are for TA e 25§ C and VCC e 5.0V. Note 3: All currents into device pins are shown as positive; all currents out of device pins are shown as negative; all voltages are referenced to ground, unless otherwise specified. All values shown as max or min are so classified on absolute value basis. Note 4: Only one output at a time should be shorted. Note 5: This parameter is guaranteed by design. It is not a tested parameter. 3 http://www.national.com Switching Characteristics VCC e 5.0V g 5%, TA e 0§ C to a 70§ C (Note 1) Symbol tPLH Parameter Propagation Delay Time, Low to High Level Output tPHL Propagation Delay Time, High to Low Level Output tPLH Propagation Delay Time, Low to High Level Output tPHL Propagation Delay Time, High to Low Level Output tPZH Output Enable Time to High Level tPHZ Output Disable Time to High Level tPZL Output Enable Time to Low Level tPLZ Output Disable Time to Low Level tPZH Output Enable Time to High Level tPHZ Output Disable Time to High Level tPZL Output Enable Time to Low Level tPLZ Output Disable Time to Low Level tPZH Output Pull-Up Enable Time tPHZ Output Pull-Up Disable Time From Terminal Bus To Bus Terminal TE Bus (Notes 2 and 3) TE, PE Conditions Min VL e 2.3V RL e 38.3X CL e 30 pF (Figure 1) VL e 5.0V RL e 240X CL e 30 pF (Figure 2) VI e 3.0V VL e 0V RL e 480X CL e 15 pF (Figure 1) VI e 0V VL e 2.3V RL e 38.3X CL e 15 pF (Figure 1) Terminal (Notes 2 and 3) VI e 3.0V VL e 0V RL e 3 kX CL e 15 pF (Figure 1) VI e 0V VL e 5V RL e 280X CL e 15 pF (Figure 1) PE Bus (Notes 2 and 3) VI e 3V VL e 0V RL e 480X CL e 15 pF (Figure 1) Typ Max Units 10 20 ns 14 20 ns 15 20 ns 10 20 ns 19 30 ns 15 20 ns 24 40 ns 17 30 ns 19 35 ns 17 25 ns 27 40 ns 17 30 ns 10 20 ns 10 20 ns Note 1: All typical values are for TA e 25§ C, VCC e 5V. Note 2: Refer to Functional Truth Table for control input definition. Note 3: Test configuration should be connected to only one transceiver at a time due to the high current stress caused by the VI voltage source when the output connected to that input becomes active. Switching Load Configurations VC logic high e 3.0V TL/F/5245 – 3 VC logic low e 0V VC logic high e 3.0V VC logic low e 0V TL/F/5245 – 4 *CL includes jig and probe capacitance *CL includes jig and probe capacitance FIGURE 1 http://www.national.com FIGURE 2 4 Switching Waveforms Transmit Propagation Delays TL/F/5245 – 5 Receive Propagation Delays TL/F/5245 – 6 Terminal Enable/Disable Times TL/F/5245 – 7 Bus Enable/Disable Times TL/F/5245 – 8 *Input signal: f e 1.0 MHz, 50% duty cycle, tr e tf s 5 ns 5 http://www.national.com DS3667 TRI-STATE Bidirectional Transceiver Physical Dimensions inches (millimeters) Molded Dual-In-Line Package (N) Order Number DS3667N NS Package Number N20A LIFE SUPPORT POLICY NATIONAL’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 NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. 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