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SN74LVC8T245MDWREP Datasheet(PDF) 1 Page - Texas Instruments |
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SN74LVC8T245MDWREP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 26 page DIR OE A1 B1 To Seven Other Channels 2 3 22 21 Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. SN74LVC8T245-EP SCES770A – DECEMBER 2008 – REVISED MARCH 2017 SN74LVC8T245-EP 8-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation and Tri-State Outputs 1 (1) Additional temperature ranges are available – contact factory. 1 Features 1 • Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage • VCC Isolation Feature – If Either VCC Input Is at GND, All Are in the High-Impedance State • Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II • ESD Protection Exceeds JESD 22 – 4000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) 2 Applications • Controlled Baseline • One Assembly/Test Site • One Fabrication Site • Available in Military (–55°C/125°C) Temperature Range (1) • Extended Product Life Cycle • Extended Product-Change Notification • Product Traceability 3 Description This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74LVC8T245-EP is optimized to operate with VCCA and VCCB set at 1.65 V to 5.5 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes. The SN74LVC8T245-EP is 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. The SN74LVC8T245-EP is designed so that the control pins (DIR and OE) are supplied by VCCA. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SN74LVC8T245-EP TSSOP (24) 4.40 mm × 7.80 mm SOIC (24) 7.50 mm × 15.40 mm VQFN (24) 3.50 mm × 5.50 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Logic Diagram (Positive Logic) |
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