74CBTLV3245 LOW-VOLTAGE OCTAL BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE OCTAL 74CBTLV3245 BUS SWITCH FEATURES: DESCRIPTION: Pin-out compatible with standard 245 Logic products The octal bus switch has standard 245 pinouts. The CBTLV3245 is 5 A/B bi-directional switch designed for asynchronous communication between data buses. When Isolation under power-off conditions Output Enable (OE) is low, the 8-bit bus switch is on and port A is connected Over-voltage tolerant to Port B. When OE is high, the switch is off and a high impedance exists Latch-up performance exceeds 100mA between Port A and Port B. VCC = 2.3V - 3.6V, Normal Range To ensure the high-impedance state during power up or power down, ESD > 2000V per MIL-STD-883, Method 3015 OE should be tied to VCC through a pullup resistor. > 200V using machine model (C = 200pF, R = 0) Available in QSOP and TSSOP packages APPLICATIONS: 3.3V High Speed Bus Switching and Bus Isolation FUNCTIONAL BLOCK DIAGRAM SIMPLIFIED SCHEMATIC, EACH SWITCH 2 18 SW A1 B1 AB 9 11 A8 SW B8 19 OE OE INDUSTRIAL TEMPERATURE RANGE MAY 2019 1 2019 Integrated Device Technology, Inc. DSC-5170/674CBTLV3245 LOW-VOLTAGE OCTAL BUS SWITCH INDUSTRIAL TEMPERATURE RANGE (1) PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS Symbol Description Max Unit VCC SupplyVoltage Range 0.5 to +4.6 V 1 20 VCC NC VI Input Voltage Range 0.5 to +4.6 V Continuous Channel Current 128 mA 2 A1 19 OE IIK Input Clamp Current, VI/O < 0 50 mA 3 18 B1 A2 TSTG Storage Temperature 65 to +150 C 17 NOTE: 4 B2 A3 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation 5 B3 A4 16 of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating B4 A5 6 15 conditions for extended periods may affect reliability. B5 A6 7 14 13 B6 A7 8 A8 12 9 B7 PIN DESCRIPTION GND 11 B8 10 Pin Names Description OE Output Enable (Active LOW) TOP VIEW A x Port A Inputs or Outputs B x Port B Inputs or Outputs Package Type Package Code Order Code TSSOP PGG20 PGG QSOP PCG20 QG (1) FUNCTION TABLE Input OE Operation L A Port = B Port H Isolation NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level (1) OPERATING CHARACTERISTICS, TA = 25C Symbol Parameter Test Conditions Min. Max. Unit VCC Supply Voltage 2.3 3.6 V VIH High-Level Control Input Voltage VCC = 2.3V to 2.7V 1.7 V VCC = 2.7V to 3.6V 2 VIL Low-Level Control Input Voltage VCC = 2.3V to 2.7V 0.7 V VCC = 2.7V to 3.6V 0.8 TA Operating Free-Air Temperature 40 85 C NOTE: 1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. 2