74ACQ646

更新时间： 2024-02-22 14:26:42

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
10页	99K
描述
Quiet Series⑩ Octal Transceiver/Register with 3-STATE Outputs

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74ACQ646 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	24
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.71	Is Samacsys：	N
系列：	AC	JESD-30 代码：	R-PDIP-T24
长度：	31.915 mm	逻辑集成电路类型：	REGISTERED BUS TRANSCEIVER
位数：	8	功能数量：	1
端口数量：	2	端子数量：	24
最高工作温度：	85 °C	最低工作温度：	-40 °C
输出特性：	3-STATE	输出极性：	TRUE
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
传播延迟（tpd）：	14 ns	认证状态：	Not Qualified
座面最大高度：	5.08 mm	最大供电电压 (Vsup)：	6 V
最小供电电压 (Vsup)：	2 V	标称供电电压 (Vsup)：	3.3 V
表面贴装：	NO	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	7.62 mm	Base Number Matches：	1

74ACQ646 数据手册

January 1990

Revised September 2000

74ACQ646 • 74ACTQ646

Quiet Series Octal Transceiver/Register

with 3-STATE Outputs

General Description

Features

■ Guaranteed simultaneous switching noise level and

The ACQ/ACTQ646 consist of registered bus transceiver

circuits, with outputs, D-type flip-flops, and control circuitry

providing multiplexed transmission of data directly from the

input bus or from the internal storage registers. Data on the

A or B bus will be loaded into the respective registers on

the LOW-to-HIGH transition of the appropriate clock pin

(CPAB or CPBA). The four fundamental handling functions

available are illustrated in Figure 1, Figure 2, Figure 3 and

Figure 4.

dynamic threshold performance

■ Guaranteed pin-to-pin skew AC performance

■ Independent registers for A and B busses

■ Multiplexed real-time and stored data transfers

■ 300 mil slim dual-in-line package

■ Outputs source/sink 24 mA

■ Faster prop delays than the standard AC/ACT646

The ACQ/ACTQ utilizes Fairchild Quiet Series technol-

ogy to guarantee quiet output switching and improved

dynamic threshold performance. FACT Quiet Series fea-

tures GTO output control and undershoot corrector in

addition to a split ground bus for superior performance.

Ordering Code:

Order Number

74ACQ646SC

Package Number

M24B

Package Description

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

74ACQ464ASPC

74ACTQ646SC

74ACTQ464ASPC

N24C

M24B

N24C

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Connection Diagram

Pin Descriptions

Pin Names

A₀–A₇

Descriptions

Data Register A Inputs

Data Register A Outputs

Data Register B Inputs

Data Register B Outputs

Clock Pulse Inputs

B₀–B₇

CPAB, CPBA

SAB, SBA

Transmit/Receive Inputs

Output Enable Input

DIR

Direction Control Input

FACT , Quiet Series , FACT Quiet Series and GTO are trademarks of Fairchild Semiconductor Corporation

DS010635

www.fairchildsemi.com

12 3 4 5 6 7...10

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与74ACQ646相关器件

型号	品牌	获取价格	描述	数据表
74ACQ646ASPC	FAIRCHILD	获取价格	Single 8-bit Bus Transceiver
74ACQ646FC	TI	获取价格	IC AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24, CERAMIC, FP-24, Bus Drive
74ACQ646FCQR	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24, CERAMIC, FP-24
74ACQ646FCX	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24, CERAMIC, FP-24
74ACQ646LC	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CQCC28, CERAMIC, LCC-28
74ACQ646LCQR	TI	获取价格	IC AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CQCC28, CERAMIC, LCC-28, Bus Driv
74ACQ646QC	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PQCC28, PLASTIC, LCC-28
74ACQ646SC	FAIRCHILD	获取价格	Quiet Series⑩ Octal Transceiver/Register with
74ACQ646SC	ROCHESTER	获取价格	Registered Bus Transceiver, AC Series, 1-Func, 8-Bit, True Output, CMOS, PDSO24, 0.300 INC
74ACQ646SCQR	TI	获取价格	AC SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, SOIC-24

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