12Bit To 24Bit Registered Bus Exchanger With 3-State Outputs 56-TSSOP -40℃ to 85℃
This 12-bit to 24-bit registered bus exchanger is designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCH16270 is used in applications in which data must be transferred from a narrow high-speed bus to a wide lower-frequency bus.
The device provides synchronous data exchange between the two ports. Data is stored in the internal registers on the low-to-high transition of the clock CLK input when the appropriate CLKEN\ inputs are low. The select SEL\ line selects 1B or 2B data for the A outputs. For data transfer in the A-to-B direction, a two-stage pipeline is provided in the A-to-1B path, with a single storage register in the A-to-2B path. Proper control of the CLKENA\ inputs allows two sequential 12-bit words to be presented synchronously as a 24-bit word on the B port. Data flow is controlled by the active-low output enables OEA\, OEB\\\\. The control terminals are registered to synchronize the bus-direction changes with CLK.
To ensure the high-impedance state during power up or power down, a clock pulse should be applied as soon as possible, and 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. Due to OE\ being routed through a register, the active state of the outputs cannot be determined prior to the arrival of the first clock pulse.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH16270 is characterized for operation from 40°C to 85°C.
电源电压DC 1.65V ~ 3.60V
输出接口数 12
输出电流 24.0 mA
供电电流 250 mA
电路数 12Bit ~ 24Bit
位数 24
传送延迟时间 5.10 ns
电压波节 3.30 V, 2.70 V, 2.50 V, 1.80 V
输出电流驱动 -1.00 mA
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 1.65V ~ 3.6V
电源电压Max 3.6 V
电源电压Min 1.65 V
安装方式 Surface Mount
引脚数 56
封装 TSSOP-56
长度 14 mm
宽度 6.1 mm
高度 1.15 mm
封装 TSSOP-56
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free