SN74LV8154_TI 具有三态输出寄存器的双路 16 位二进制计数器

SN74LV8154的基本参数

制造厂商：TI
产品类别：逻辑和电压转换
技术类目：触发器、锁存器和寄存器 - 计数器
功能描述：具有三态输出寄存器的双路 16 位二进制计数器
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SN74LV8154的产品详情：

The SN74LV8154 device is a dual 16-bit binary counter with 3-state output registers, designed for 2-V to 5.5-V V_CC operation.

The counters have dedicated clock inputs. The counters share a clocked storage register to sample and save the counter contents. Both counters share an asynchronous clear input. The 32-bit storage register can be mapped on the output bus 8-bits at a time. Four bus reads are needed to access the contents of both stored counts. The two counters can be chained by connecting CLKBEN to RCOA. All clocks are positive edge triggered. All other inputs are active low.

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

SN74LV8154的优势和特性：

Can Be Used as Two 16-Bit Counters or a Single 32-Bit Counter
8-bit counter read bus
2-V to 5.5-V VCC Operation
Maximum tpd of 25 ns at 5 V (RCLK to Y)
Typical VOLP (Output Ground Bounce) < 0.7 V at VCC = 5 V, TA = 25°C
Typical VOHV (Output VOH Undershoot) > 4.4 V at VCC = 5 V, TA = 25°C
Ioff Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

SN74LV8154的参数（英文）：

Function
Counter
Bits (#)
16
Technology Family
LV-A
Supply voltage (Min) (V)
2
Supply voltage (Max) (V)
5.5
Input type
Standard CMOS
Output type
3-State
Features
Balanced outputs, High speed (tpd 10-50ns), Over-voltage tolerant inputs, Partial power down (Ioff)

SN74LV8154具体的完整产品型号参数及价格（美元）：

SN74LV8154的完整型号有：SN74LV8154N、SN74LV8154PW、SN74LV8154PWR，以下是这些产品的关键参数及官网采购报价：

SN74LV8154N，工作温度：-40 to 85，封装：PDIP (N)-20，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网SN74LV8154N的批量USD价格：.362（1000+）

SN74LV8154PW，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：70个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74LV8154PW的批量USD价格：.378（1000+）

SN74LV8154PWR，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74LV8154PWR的批量USD价格：.315（1000+）

SN74LV8154的评估套件：

14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM

该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。

SN74LV8154的电路图解：

SN74LV8154的评估套件：