SN54AS885_TI 8 位幅度比较器

SN54AS885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：专用逻辑 IC - 数字算术 IC
功能描述：8 位幅度比较器
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SN54AS885的产品详情：

These advanced Schottky devices are capable of performing high-speed arithmetic or logic comparisons on two 8-bit binary or two's complement words. Two fully decoded decisions about words P and Q are externally available at two outputs. These devices are fully expandable to any number of bits without external gates. To compare words of longer lengths, the P > QOUT and P < QOUT outputs of a stage handling less significant bits can be connected to the P > QIN and P < QIN inputs of the next stage handling more significant bits. The cascading paths are implemented with only a two-gate-level delay to reduce overall comparison times for long words. Two alternative methods of cascading are shown in application information.

The latch is transparent when P latch-enable (PLE) input is high; the P-input port is latched

when PLE is low. This provides the designer with temporary storage for the P-data word. The enable circuitry is implemented with minimal delay times to enhance performance when cascaded for longer words. The PLE, P, and Q data inputs utilize pnp input transistors to reduce the low-level current input requirement to typically -0.25 mA, which minimizes dc loading effects.

The SN54AS885 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74AS885 is characterized for operation from 0°C to 70°C.

In these cases, P > QOUT follows P > QIN and P < QOUT follows P < QIN.

AG = arithmetically greater than

SN54AS885的优势和特性：

Latchable P-Input Ports With Power-Up Clear
Choice of Logical or Arithmetic (Two's Complement) Comparison
Data and PLE Inputs Utilize pnp Input Transistors to Reduce dc Loading Effects
Approximately 35% Improvement in ac Performance Over Schottky TTL While Performing More Functions
Cascadable to n Bits While Maintaining High Performance
10% Less Power Than STTL for an 8-Bit Comparison
Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

SN54AS885的参数（英文）：

Number of channels (#)
8
Technology Family
AS
Input type
Bipolar
Output type
Push-Pull
Features
High speed (tpd 10-50ns)

SN54AS885具体的完整产品型号参数及价格（美元）：

SN54AS885的完整型号有：5962-89757013A、5962-8975701LA、SN54AS885JT、SNJ54AS885FK、SNJ54AS885JT，以下是这些产品的关键参数及官网采购报价：

5962-89757013A，工作温度：-55 to 125，封装：LCCC (FK)-28，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-89757013A的批量USD价格：37.056（1000+）

5962-8975701LA，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-8975701LA的批量USD价格：26.594（1000+）

SN54AS885JT，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SN54AS885JT的批量USD价格：19.859（1000+）

SNJ54AS885FK，工作温度：-55 to 125，封装：LCCC (FK)-28，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54AS885FK的批量USD价格：37.056（1000+）

SNJ54AS885JT，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54AS885JT的批量USD价格：26.594（1000+）

SN54AS885的评估套件：

SN54AS885的电路图解：

SN54AS885的评估套件：