CBT3245

INTEGRATED CIRCUITS CBT3245 Octal bus switch with output enable Preliminary specification 1998 Dec 08 Philips Semiconductors Philips Semiconductors Preliminary specification Octal bus switch with output enable CBT3245 FEATURES Functionally equivalent to QS3245 Standard ’245-type pinout 5Ω switch connection between two ports TTL compatible control input levels Package options include plastic small outline (D), shrink small outline (DB), thin shrink small outline (TSSOP) DESCRIPTION The CBT3245 provides eight bits of high-speed TTL-compatible bus switching in a standard ’245 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The CBT3245 device is organized as one 8-bit switch. When enable (OE) is low, the switch is on and port A is connected to port B. When OE is high, the switch is open and a high-impedance state exists between the two ports. The CBT3245 is characterized for operation from –40°C to 85°C. QUICK REFERENCE DATA SYMBOL tPLH tPHL CIO(OFF) ICCZ PARAMETER Propagation delay An to Yn Pin capacitance (OFF state) Total supply current CONDITIONS Tamb = 25°C; GND = 0V CL = 50pF; VCC = 5V VO = 3V or 0V Outputs disabled; VCC =5.5V 6 TYPICAL UNIT ns pF µA ORDERING INFORMATION PACKAGES 20-Pin plastic SO 20-Pin Plastic SSOP Type II 20-Pin Plastic TSSOP Type I TEMPERATURE RANGE –40°C to 85°C –40°C to 85°C –40°C to 85°C OUTSIDE NORTH AMERICA CBT3245 D CBT3245 DB CBT3245 PW NORTH AMERICA CBT32...