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74LVCH245A 데이터시트(PDF) 1 Page - NXP Semiconductors |
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1 / 17 page 1. General description The 74LVC245A; 74LVCH245A are 8-bit transceivers featuring non-inverting 3-state bus compatible outputs in both send and receive directions. The device features an output enable (OE) input for easy cascading and a send/receive (DIR) input for direction control. OE controls the outputs so that the buses are effectively isolated. Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be applied to the outputs. These features allow the use of these devices in mixed 3.3 V and 5 V applications. The 74LVCH245A bus hold on data inputs eliminates the need for external pull-up resistors to hold unused inputs. 2. Features I 5 V tolerant inputs/outputs for interfacing with 5 V logic I Wide supply voltage range from 1.2 V to 3.6 V I CMOS low-power consumption I Direct interface with TTL levels I Inputs accept voltages up to 5.5 V I High-impedance when VCC = 0 V I Bushold on all data inputs (74LVCH245A only) I Complies with JEDEC standard no. 8-1A I ESD protection: N HBM JESD22-A114E exceeds 2000 V N MM JESD22-A115-A exceeds 200 V I Specified from −40 °C to +85 °C and −40 °C to +125 °C 74LVC245A; 74LVCH245A Octal bus transceiver; 3-state Rev. 05 — 25 August 2009 Product data sheet |
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