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74LVTH322245 Dataheets PDF



Part Number 74LVTH322245
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Low Voltage 32-Bit Transceiver
Datasheet 74LVTH322245 Datasheet74LVTH322245 Datasheet (PDF)

74LVT322245 • 74LVTH322245 Low Voltage 32-Bit Transceiver with 3-STATE Outputs and 25Ω Series Resistors in A Port Outputs May 2002 Revised May 2002 74LVT322245 • 74LVTH322245 Low Voltage 32-Bit Transceiver with 3-STATE Outputs and 25Ω Series Resistors in A Port Outputs General Description The LVT322245 and LVTH322245 contain thirty-two noninverting bidirectional buffers with 3-STATE outputs and are intended for bus oriented applications. The device is byte controlled. Each byte has separate co.

  74LVTH322245   74LVTH322245



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74LVT322245 • 74LVTH322245 Low Voltage 32-Bit Transceiver with 3-STATE Outputs and 25Ω Series Resistors in A Port Outputs May 2002 Revised May 2002 74LVT322245 • 74LVTH322245 Low Voltage 32-Bit Transceiver with 3-STATE Outputs and 25Ω Series Resistors in A Port Outputs General Description The LVT322245 and LVTH322245 contain thirty-two noninverting bidirectional buffers with 3-STATE outputs and are intended for bus oriented applications. The device is byte controlled. Each byte has separate control inputs which can be shorted together for full 32-bit operation. The T/R inputs determine the direction of data flow through the device. The OE inputs disable both the A and B ports by placing them in a high impedance state. The LVT322245 and LVTH322245 are designed with equivalent 25Ω series resistance in both the HIGH and LOW states on the A Port outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters. The LVTH322245 data inputs include bushold, eliminating the need for external pull-up resistors to hold unused inputs. These non-inverting transceivers are designed for low-voltage (3.3V) VCC applications, but with the capability to provide a TTL interface to a 5V environment. The LVT322245 and LVTH322245 are fabricated with an advanced BiCMOS technology to achieve high speed operation similar to 5V ABT while maintaining a low power dissipation. Features s Input and output interface capability to systems at 5V VCC s Bushold data inputs eliminate the need for external pull-up resistors to hold unused inputs (74LVTH322245) s Also available without bushold feature (74LVT322245) s Live insertion/extraction permitted s Power Up/Power Down high impedance provides glitch-free bus loading s A Port outputs include equivalent series resistance of 25Ω making external termination resistors unnecessary and reducing overshoot and undershoot s A Port outputs source/sink ±12 mA B Port outputs source/sink −32 mA/+64 mA s ESD performance: Human-body model > 2000V Machine model > 200V Charged-device model > 1000V s Packaged in plastic Fine-Pitch Ball Grid Array (FBGA) Ordering Code: Order Number 74LVT322245G (Note 1) (Note 2) 74LVTH322245G (Note 1) (Note 2) Package Number BGA96A (Preliminary) BGA96A Package Description 96-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide 96-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Note 1: Ordering code “G” indicates TRAYS. Note 2: Devices also available in TAPE and REEL. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol © 2002 Fairchild Semiconductor Corporation DS500408 www.fairchildsemi.com 74LVT322245 • 74LVTH322245 Connection Diagram FBGA Pin Descriptions Pin Names OEn T/Rn A0–A31 B0–B31 Description Output Enable Input (Active LOW) Transmit/Receive Input Side A Inputs/3-STATE Outputs Side B Inputs/3-STATE Outputs Pin Assignments for FBGA 1 A B C D E F G H (Top Thru View) J K L.


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