Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ALVC164245DGGR Datenblatt(PDF) 2 Page - Texas Instruments |
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SN74ALVC164245DGGR Datenblatt(HTML) 2 Page - Texas Instruments |
2 / 22 page www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) GQL OR ZQL PACKAGE (TOP VIEW) J H G F E D C B A 2 1 3 4 6 5 K abc GRD OR ZRD PACKAGE (TOP VIEW) J H G F E D C B A 2 1 3 4 6 5 SN74ALVC164245 16-BIT 2.5-V TO 3.3-V/3.3-V TO 5-V LEVEL-SHIFTING TRANSCEIVER WITH 3-STATE OUTPUTS SCAS416P – MARCH 1994 – REVISED NOVEMBER 2005 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 always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ. TERMINAL ASSIGNMENTS(1) (56-Ball GQL/ZQL Package) 1 2 3 4 5 6 A 1DIR NC NC NC NC 1OE B 1B2 1B1 GND GND 1A1 1A2 C 1B4 1B3 VCCB VCCA 1A3 1A4 D 1B6 1B5 GND GND 1A5 1A6 E 1B8 1B7 1A7 1A8 F 2B1 2B2 2A2 2A1 G 2B3 2B4 GND GND 2A4 2A3 H 2B5 2B6 VCCB VCCA 2A6 2A5 J 2B7 2B8 GND GND 2A8 2A7 K 2DIR NC NC NC NC 2OE abc (1) NC – No internal connection TERMINAL ASSIGNMENTS(1) (54-Ball GRD/ZRD Package) 1 2 3 4 5 6 A 1B1 NC 1DIR 1OE NC 1A1 B 1B3 1B2 NC NC 1A2 1A3 C 1B5 1B4 VCCB VCCA 1A4 1A5 D 1B7 1B6 GND GND 1A6 1A7 E 2B1 1B8 GND GND 1A8 2A1 F 2B3 2B2 GND GND 2A2 2A3 G 2B5 2B4 VCCB VCCA 2A4 2A5 H 2B7 2B6 NC NC 2A6 2A7 J 2B8 NC 2DIR 2OE NC 2A8 (1) NC – No internal connection xxxxx xxxxx xxxxx xxxxx FUNCTION TABLE(1) (EACH 8-BIT SECTION) CONTROL INPUTS OUTPUT CIRCUITS OPERATION OE DIR A PORT B PORT L L Enabled Hi-Z B data to A bus L H Hi-Z Enabled A data to B bus H X Hi-Z Hi-Z Isolation (1) Input circuits of the data I/Os always are active. 2 |
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