IDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR INDUSTRIAL TEMPERATURE RANGE FAST CMOS 16-BIT IDT74FCT164245T BIDIRECTIONAL 3.3V TO 5V TRANSLATOR FEATURES: DESCRIPTION: 0.5 MICRON CMOS Technology The FCT164245T 16-bit 3.3V-to-5V translator is built using advanced Bidirectional interface between 3.3V and 5V buses dual metal CMOS technology. This high-speed, low-power transceiver is Control inputs can be driven from either 3.3V or 5V circuits designed to interface between a 3.3V bus and a 5V bus in a mixed 3.3V/ ESD > 2000V per MIL-STD-883, Method 3015 > 200V using 5V supply environment. This enables system designers to interface TTL machine model (C = 200pF, R = 0) compatible 3.3V components with 5V components. The direction and output VCC1 = 5V 10%, VCC2 = 2.7V to 3.6V enable controls operate these devices as either two independent 8-bit High drive outputs (-32mA IOH, 64mA IOL) on 5V port transceivers or one 16-bit transceiver. The A port interfaces with the 3.3V Power off disable on both ports permits live insertion bus the B port interfaces with the 5V bus. The direction control (xDIR) pin Typical VOLP (Output Ground Bounce) < 0.9V at VCC1 = 5V, controls the direction of data flow. The output enable pin (xOE) overrides VCC2 = 3.3V, TA = 25C the direction control and disables both ports. These control signals can be Available in SSOP and TSSOP packages driven from either 3.3V or 5V devices. The FCT164245T is ideally suited for driving high-capacitance loads and low-impedance backplanes. The output buffers are designed with power off disable capability to allowhot insertio of boards when used as backplane drivers. They also allow interface between a mixed supply system and external 5 volt peripherals. FUNCTIONAL BLOCK DIAGRAM 1 24 1 DIR 2 DIR 48 25 1OE 2OE 47 36 1A1 2A1 2 13 1B1 2B1 46 35 1A2 2A2 14 3 1B2 2B2 44 33 1A3 2A3 16 5 1B3 2B3 43 32 1A4 2A4 17 6 1B4 2B4 41 30 1A5 2A5 19 8 1B5 2B5 40 29 1A6 2A6 20 9 1B6 2B6 38 27 1A7 2A7 11 22 1B7 2B7 37 26 1A8 2A8 12 23 1B8 2B8 IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE MAY 2016 1 2016 Integrated Device Technology, Inc. DSC-2555/11 3.3V Port 5V Port 3.3V Port 5V PortIDT74FCT164245T FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR INDUSTRIAL TEMPERATURE RANGE (1)(1)(1)(1)(1) PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS Symbol Description Max Unit (2) VTERM Terminal Voltage with Respect to GND 0.5 to +7 V 1 48 1DIR 1OE (3) VTERM Terminal Voltage with Respect to GND 0.5 to Vcc1+0.5 V 2 47 TA Operating Temperature 40 to +85 C 1B1 1A1 TBIAS Temperature Under Bias 55 to +125 C 3 46 1B2 1A2 TSTG Storage Temperature 55 to +125 C PT Power Dissipation 1 W GND 4 45 GND IOUT DC Output Current 60 to +120 mA 5 44 1B3 1A3 NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause 6 43 1B4 1A4 permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational VCC1 7 42 VCC2 sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 8 41 1B5 1A5 2. All devices except Vcc2. 3. Power supply terminal Vcc2. 9 40 1B6 1A6 GND 10 39 GND 11 38 1B7 1A7 CAPACITANCE (TA = +25C, F = 1.0MHz) (1) Symbol Parameter Conditions Typ. Max. Unit 12 37 1B8 1A8 CIN Input Capacitance VIN = 0V 3.5 6 pF 13 36 2B1 2A1 CI/O I/O Capacitance VOUT = 0V 3.5 8 pF NOTE: 14 35 2B2 2A2 1. This parameter is measured at characterization but not tested. GND 15 34 GND 16 33 2B3 2A3 PIN DESCRIPTION 17 32 Pin Names Description 2B4 2A4 xOE Output Enable Input (Active LOW) VCC1 18 31 VCC2 xDIR Direction Control Input 19 30 2B5 2A5 x A x Side A Inputs or 3-State Outputs (3.3V Port) x B x Side B Inputs or 3-State Outputs (5V Port) 20 29 2B6 2A6 GND 21 28 GND 22 27 2B7 2A7 (1) FUNCTION TABLE 23 26 2B8 2A8 Inputs 24 25 2DIR 2OE xOE xDIR Outputs L L Bus B Data to Bus A SSOP/ TSSOP L H Bus A Data to Bus B TOP VIEW H X High Z State NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level POWER SUPPLY SEQUENCING X = Don t Care In the 74FCT164245T, the condition of VCC1 (VCC2 0.5V) must be Z = High-Impedance maintained at all times. For the range of VCC1 = (VCC2 0.5V) to VCC1 = (VCC2 + 0.9V), both the A and B ports will remain in a High-Impedance state. 2