SN74ALVCHR16245 Datasheet | Texas Instruments

FEATURES - Member of the Texas Instruments Widebus™ Family - Operates From 1.65 V to 3.6 V - Max tpd of 4.2 ns at 3.3 V - ±12-m A Output Drive at 3.3 V - All Outputs Have Equivalent 26-Ω Series Resistors, So No External Resistors Are Required - Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors - Latch-Up Performance Exceeds 250 m A Per JESD 17 - ESD Protection Exceeds JESD 22 - 2000-V Human-Body Model (A114-A) - 200-V Machine Model (A115-A) DESCRIPTION /ORDERING INFORMATION This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation. The SN74ALVCHR16245 is designed for asynchronous munication between data buses. The control-function implementation minimizes external timing requirements. This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated. SN74ALVCHR16245 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS SCES064G - DECEMBER 1995 - REVISED OCTOBER 2004 DGG OR DL PACKAGE (TOP VIEW) 1DIR 1 1B1 2 1B2 3 GND 4 1B3 5 1B4 6 VCC 7 1B5 8 1B6 9 GND 10 1B7 11 1B8 12 2B1 13 2B2 14 GND 15 2B3 16 2B4 17 VCC 18 2B5 19 2B6 20 GND 21 2B7 22 2B8 23 2DIR 24 48 1OE 47 1A1 46 1A2 45 GND 44 1A3 43 1A4 42 VCC 41 1A5 40 1A6 39 GND 38 1A7 37 1A8 36 2A1 35 2A2 34 GND 33 2A3 32 2A4 31 VCC 30 2A5 29 2A6 28 GND 27 2A7 26 2A8 25 2OE All outputs, which are designed to sink up to 12 m A, include equivalent 26-Ω series resistors to reduce overshoot and undershoot. To ensure the high-impedance state during power up or power down, 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. Active bus-hold circuitry holds unused or undriven inputs at a valid logic...