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CD54HC646 具有三态输出的高速 CMOS 逻辑八路反向总线收发器

The CD54HC646 and CD74HCT646 consist of bus-transceiver circuits with 3-state outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that can be performed with these devices.

Output-enable (OE\) and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at the high-impedance port can be stored in either or both registers.

The select-control (SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data

	CD54HC646
Voltage Nodes (V)	6, 5, 2
Technology Family	HC
Rating	Military

CD54HC646 特性

• 2-V to 6-V VCC Operation (CD54HC646)
• 4.5-V to 5.5-V VCC Operation (CD74HCT646)
• Wide Operating Temperature Range of –55°C to 125°C
• Balanced Propagation Delays and Transition Times
• Standard Outputs Drive Up To 15 LS-TTL Loads
• Significant Power Reduction Compared to LS-TTL Logic ICs
• Inputs Are TTL-Voltage Compatible (CD74HCT646)
• Independent Registers for A and B Buses
• Multiplexed Real-Time and Stored Data
• True Data Paths

CD54HC646 芯片订购指南

器件	状态	温度	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
5962-8688501JA	ACTIVE	-55 to 125	14.53 | 1ku	CDIP (J) | 24	1 | TUBE
CD54HC646F3A	ACTIVE	-55 to 125	14.53 | 1ku	CDIP (J) | 24	1 | TUBE

CD54HC646 应用手册

标题	类型	大小
选择合适的德州仪器 (TI) 信号开关	PDF	1091
Shelf-Life Evaluation of Lead-Free Component Finishes	PDF	1310
Understanding and Interpreting Standard-Logic Data Sheets	PDF	857
TI IBIS File Creation, Validation, and Distribution Processes	PDF	380
Implications of Slow or Floating CMOS Inputs	PDF	101
CMOS Power Consumption and CPD Calculation	PDF	89
Designing With Logic	PDF	186
Live Insertion	PDF	150
Input and Output Characteristics of Digital Integrated Circuits	PDF	1708
SN54/74HCT CMOS Logic Family Applications and Restrictions	PDF	102
Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc	PDF	43

CD54HC646 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
5962-8688501JA	TBD	Call TI	Call TI	5962-8688501JA	5962-8688501JA
CD54HC646F3A	TBD	Call TI	N/A for Pkg Type	CD54HC646F3A	CD54HC646F3A

CD54HC646 应用技术支持与电子电路设计开发资源下载

1. CD54HC646 数据资料 dataSheet 下载.PDF
2. TI 德州仪器触发器/锁存器/寄存器产品选型与价格 . xls
3. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
4. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
5. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
6. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
7. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
8. Designing With Logic (PDF 186 KB)
9. Live Insertion (PDF 150 KB)
10. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
11. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
12. HiRel Unitrode Power Management Brochure (PDF 206 KB)
13. LOGIC Pocket Data Book (PDF 6001 KB)
14. HiRel Unitrode Power Management Brochure (PDF 206 KB)
15. Logic Cross-Reference (PDF 2938 KB)