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SN74LVTH16245ADGVR Datasheet(PDF) 1 Page - Texas Instruments |
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SN74LVTH16245ADGVR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 18 page www.ti.com FEATURES SN54LVTH16245A . . . WD PACKAGE SN74LVTH16245A . . . DGG, DGV, OR DL PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 1DIR 1B1 1B2 GND 1B3 1B4 VCC 1B5 1B6 GND 1B7 1B8 2B1 2B2 GND 2B3 2B4 VCC 2B5 2B6 GND 2B7 2B8 2DIR 1OE 1A1 1A2 GND 1A3 1A4 VCC 1A5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCC 2A5 2A6 GND 2A7 2A8 2OE DESCRIPTION/ORDERING INFORMATION SN54LVTH16245A ,, SN74LVTH16245A 3.3-V ABT 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS143R – MAY 1992 – REVISED NOVEMBER 2006 • Members of the Texas Instruments Widebus™ Family • State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power Dissipation • Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC) • Support Unregulated Battery Operation Down to 2.7 V • Typical V OLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C • Distributed V CC and GND Pins Minimize High-Speed Switching Noise • Flow-Through Architecture Optimizes PCB Layout • I off and Power-Up 3-State Support Hot Insertion • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors • Latch-Up Performance Exceeds 500 mA Per JESD 17 • ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) The 'LVTH16245A devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. The devices are designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Widebus is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 1992–2006, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas On products compliant to MIL-PRF-38535, all parameters are Instruments standard warranty. Production processing does not tested unless otherwise noted. On all other products, production necessarily include testing of all parameters. processing does not necessarily include testing of all parameters. |
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