Details, datasheet, quote on part number: 74FCT164245T
Description3.3V to 5V 16-BIT Translating Transceiver
CompanyIntegrated Device Technology, Inc.
DatasheetDownload 74FCT164245T datasheet
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Features, Applications

0.5 MICRON CMOS Technology Bidirectional interface between 3.3V and 5V buses Control inputs can be driven from either or 5V circuits ESD > 2000V per MIL-STD-883, Method > 200V using machine model to 3.6V High drive outputs (-32mA IOH, 64mA IOL) on 5V port Power off disable on both ports permits "live insertion" Typical VOLP (Output Ground Bounce) = 25C Available in SSOP and TSSOP packages

The 16-bit 3.3V-to-5V translator is built using advanced dual metal CMOS technology. This high-speed, low-power transceiver is designed to interface between a 3.3V bus and a 5V bus in a mixed 3.3V/ 5V supply environment. This enables system designers to interface TTL compatible 3.3V components with 5V components. The direction and output enable controls operate these devices as either two independent 8-bit transceivers or one 16-bit transceiver. The A port interfaces with the 3.3V bus; the B port interfaces with the 5V bus. The direction control (xDIR) pin controls the direction of data flow. The output enable pin (xOE) overrides the direction control and disables both ports. These control signals can be driven from either 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 allow "hot insertion" of boards when used as backplane drivers. They also allow interface between a mixed supply system and external 5 volt peripherals.

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

Symbol Description Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Operating Temperature Under Bias Storage Temperature Power Dissipation DC Output Current Max to +120 Unit W mA

NOTES: 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 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 conditions for extended periods may affect reliability. 2. All devices except Vcc2. 3. Power supply terminal Vcc2.

Symbol CIN CI/O Parameter(1) Input Capacitance I/O Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 Max. 6 8 Unit pF

NOTE: 1. This parameter is measured at characterization but not tested.

Pin Names x OE xDIR xAx xBx Description Output Enable Input (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs (3.3V Port) Side B Inputs or 3-State Outputs (5V Port)

Inputs xOE L H xDIR H X Outputs Bus B Data to Bus A Bus A Data to Bus B High Z State

In the 74FCT164245T, the condition 0.5V) must be maintained at all times. For the range + 0.9V), both the A and B ports will remain in a High-Impedance state.

NOTE: H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
Following Conditions Apply Unless Otherwise Specified: to 3.6V, Industrial: to +85C

Symbol VIH VIL IIH IIL VIK VOH Parameter Input HIGH Level (Input and I/O pins) Input LOW Level (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) Clamp Diode Voltage Output HIGH Voltage VCC2 = Min., IIN VCC2 = Min. VIN = VIH or VIL = 3V VIN = VIH or VIL VOL Output LOW Voltage VCC1 = Min. VCC2 = Min. VIN = VIH or VIL VCC = 3V VIN = VIH or VIL IOFF IOS ICC2H ICC2Z Input/Output Power Off Leakage Short Circuit Current(4) Output Drive Current Input Hysteresis Quiescent Power Supply Current = 0V, VIN VCC1 = Max., VCC2 = Max., VCC1 = Max., VCC2 = Max., VCC1 = Max. VCC2 = Max. VIN = GND mV mA IOL = 0.1mA IOL = 16mA IOL = 24mA IOL 24mA V IOH 2.4 3 IOH = 0.1mA Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC1 = Max. VCC2 = Max. VI = GND VI = GND Min. Typ.(2) 0.7 Max. V A Unit V

NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are 3.3V, +25C ambient. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested.


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