SN74ALVCH16409是TI公司的一款通用总线交换器(UBE)产品，SN74ALVCH16409是具有三态输出的 9 位 4 端口通用总线交换器，本页介绍了SN74ALVCH16409的产品说明、应用、特性等，并给出了与SN74ALVCH16409相关的TI元器件型号供参考。
SN74ALVCH16409 - 具有三态输出的 9 位 4 端口通用总线交换器 - 通用总线交换器(UBE) - 通用总线功能 - TI公司（Texas Instruments，德州仪器）
This 9-bit, 4-port universal bus exchanger is designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCH16409 allows synchronous data exchange between four different buses. Data flow is controlled by the select (SEL0-SEL4) inputs. A data-flow state is stored on the rising edge of the clock (CLK) input if the select-enable (SELEN\) input is low. Once a data-flow state has been established, data is stored in the flip-flop on the rising edge of CLK if SELEN\ is high.
The data-flow control logic is designed to allow glitch-free data transmission.
When preset (PRE\) transitions high, the outputs are disabled immediately, without waiting for a clock pulse. To leave the high-impedance state, both PRE\ and SELEN\ must be low and a clock pulse must be applied.
To ensure the high-impedance state during power up or power down, PRE\ 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 state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
- Member of the Texas Instruments Widebus+™ Family
- UBE™ (Universal Bus Exchanger) Allows Synchronous Data Exchange
- Operates From 1.65-V to 3.6-V
- Max tpd of 5.1 ns at 3.3-V
- ±24 mA Output Drive at 3.3-V
- Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
- Latch-Up Performance Exceeds 250 mA Per JESD 17
- ESD Performance Tested Per JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
Widebus+, UBE are trademarks of Texas Instruments.
