74CBTLV3244 LOW-VOLTAGE OCTAL BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE OCTAL 74CBTLV3244 BUS SWITCH FEATURES: DESCRIPTION: Pin-out compatible with standard 244 Logic products The octal bus switch has standard 244 pinouts. The CBTLV3244 is 5 A/B bi-directional switch designed for asynchronous communication between data buses. Sets of Isolation under power-off conditions four switches are controlled by one output Enable (OE). When OE is low, Over-voltage tolerant the set of four bus switches is on and port A is connected to port B. When Latch-up performance exceeds 100mA OE is high, the set of four bus switches is off and a high impedance exists VCC = 2.3V - 3.6V, Normal Range between port A and port B. ESD > 2000V per MIL-STD-883, Method 3015 To ensure the high-impedance state during power up or power down, > 200V using machine model (C = 200pF, R = 0) both OEs should be tied to VCC through a pullup resistor. 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 1B1 1A1 8 12 1A4 SW 1B4 A B 1 1OE OE 11 9 SW 2B1 2A1 17 3 2A4 SW 2B4 19 2OE INDUSTRIAL TEMPERATURE RANGE MAY 2019 1 2019 Integrated Device Technology, Inc. DSC-5393/774CBTLV3244 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 VI Input Voltage Range 0.5 to +4.6 V 20 1 VCC 1OE Continuous Channel Current 128 mA 2 2OE 1A1 19 IIK Input Clamp Current, VI/O < 0 50 mA 3 TSTG Storage Temperature 65 to +150 C 18 1B1 2B4 NOTE: 17 2A4 4 1A2 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 1B2 16 2B3 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 2A3 1A3 6 15 conditions for extended periods may affect reliability. 1B3 2B2 7 14 13 2A2 8 1A4 1B4 2B1 9 12 PIN DESCRIPTION 2A1 11 GND 10 Pin Names Description xOE 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 1OE 2OE 1A, 1B I/Os 2A, 2B I/Os H H Disconnect Disconnect L H 1A Port = 1B Port Disconnect H L Disconnect 2A Port = 2B Port L L 1A Port = 1B Port 2A Port = 2B Port 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