CD54AC245/3A CD54ACT245/3A S E M I C O N D U C T O R COMPLETE DATA SHEET COMING SOON! June 1997 Description Octal-Bus Transceiver Three-State, Non-Inverting Functional Diagram The CD54AC245/3A and CD54ACT245/3A are octal-bus transceivers that utilize the Harris Advanced CMOS Logic technology. They are non-inverting three-state bidirectional tranceiver-buffers intended for two-way transmission from “A” bus to “B” bus or “B” bus to “A” bus. The logic level present on the direction input (DIR) determines the data direction. When the output enable input (OE) is HIGH, the outputs are in the high-impedance state.) A0 A1 A2 A3 A4 The CD54AC245/3A and CD54ACT245/3A are supplied in 20 lead dual-in-line ceramic packages (F suffix). A5 A6 ACT INPUT LOAD TABLE A7 INPUT UNIT LOAD (NOTE 1) An, Bn 0.83 2 18 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B0 B1 B2 B3 B4 B5 B6 B7 1 DIR OE OE 0.64 DIR 0.15 19 NOTE: 1. Unit load is ∆ICC limit specified in DC Electrical Specifications Table, e.g., 2.4mA Max at +25oC. Absolute Maximum Ratings DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6V DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . .±50mA DC Output Source or Sink Current, Per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . . .±50mA DC VCC or GND Current, ICC or IGND For Up to 4 Outputs Per Device, Add ±25mA For Each Additional Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±100mA Power Dissipation Per Package, PD TA = -55oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at 8mW/ oC to 300mW Operating Temperature Range, TA Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature, TSTG . . . . . . . . . . . . . . . . . . -65oC to +150oC Lead Temperature (During Soldering) At Distance 1/16in. ± 1/32in. (1.59mm ± 0.79mm) From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . +265oC Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm) With Solder Contacting Lead Tips Only. . . . . . . . . . . . . . . +300oC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Recommended Operating Conditions Operating Temperature, TA . . . . . . . . . . . . . . . . . . . -55oC to +125oC Input Rise and Fall Slew Rate, dt/dv at 1.5V to 3V (AC Types) . . . . . . . . . . . . . . . . . . . 0ns/V to 50ns/V at 3.6V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 20ns/V at 4.5V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 10ns/V Supply Voltage Range, VCC Unless Otherwise Specified, All Voltages Referenced to GND TA = Full Package Temperature Range CD54AC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V CD54ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . . 0V to VCC CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright © Harris Corporation 1994 1 File Number 3901