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SN74ABT646DB

更新时间： 2024-11-24 23:06:11
品牌 Logo 应用领域
德州仪器 - TI 总线收发器输出元件
页数 文件大小 规格书
16页 340K
描述
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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SN74ABT646DB 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SSOP包装说明：SSOP,
针数：24Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：5.1
其他特性：SELECT INPUT FOR MULTIPLEXED TRANSMISSION OF REGISTERED/REAL TIME DATA系列：ABT
JESD-30 代码：R-PDSO-G24JESD-609代码：e4
长度：8.2 mm负载电容（CL）：50 pF
逻辑集成电路类型：REGISTERED BUS TRANSCEIVER湿度敏感等级：1
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：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260最大电源电流（ICC）：30 mA
传播延迟（tpd）：8.4 ns认证状态：Not Qualified
座面最大高度：2 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：BICMOS
温度等级：INDUSTRIAL端子面层：NICKEL PALLADIUM GOLD
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：5.3 mmBase Number Matches：1

SN74ABT646DB 数据手册

 浏览型号SN74ABT646DB的Datasheet PDF文件第2页浏览型号SN74ABT646DB的Datasheet PDF文件第3页浏览型号SN74ABT646DB的Datasheet PDF文件第4页浏览型号SN74ABT646DB的Datasheet PDF文件第5页浏览型号SN74ABT646DB的Datasheet PDF文件第6页浏览型号SN74ABT646DB的Datasheet PDF文件第7页 
SN54ABT646, SN74ABT646  
OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCBS068E – JULY 1991 – REVISED JULY 1994  
SN54ABT646 . . . JT PACKAGE  
SN74ABT646 . . . DB, DW, NT, OR PW PACKAGE  
(TOP VIEW)  
• State-of-the-Art EPIC-ΙΙB BiCMOS Design  
Significantly Reduces Power Dissipation  
• ESD Protection Exceeds 2000 V Per  
MIL-STD-883C, Method 3015; Exceeds  
200 V Using Machine Model (C = 200 pF,  
R = 0)  
CLKAB  
SAB  
DIR  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
GND  
V
CC  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
CLKBA  
SBA  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
2
3
• Latch-Up Performance Exceeds 500 mA  
4
Per JEDEC Standard JESD-17  
5
6
• Typical V  
(Output Ground Bounce)  
OLP  
CC  
7
< 1 V at V  
= 5 V, T = 25°C  
A
8
• High-Drive Outputs (–32-mA I  
,
OH  
9
64-mA I  
)
OL  
10  
11  
12  
• Package Options Include Plastic  
Small-Outline (DW), Shrink Small-Outline  
(DB), and Thin Shrink Small-Outline (PW)  
Packages, Ceramic Chip Carriers (FK), and  
Plastic (NT) and Ceramic (JT) DIPs  
B8  
SN54ABT646 . . . FK PACKAGE  
(TOP VIEW)  
description  
These devices consist of bus transceiver circuits,  
D-type flip-flops, and control circuitry arranged for  
multiplexed transmission of data directly from the  
inputbusorfromtheinternalregisters. Dataonthe  
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 the ′ABT646.  
4
3
2
1
28 27 26  
25  
OE  
B1  
B2  
NC  
A1  
A2  
A3  
NC  
A4  
A5  
A6  
5
24  
23  
22  
6
7
8
21 B3  
9
20  
19  
10  
11  
B4  
B5  
12 13 14 15 16 17 18  
Output-enable (OE) and direction-control (DIR)  
inputs are provided to control the transceiver  
functions. In the transceiver mode, data present at  
the high-impedance port may be stored in either  
register or in both.  
NC – No internal connection  
The select-control (SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data. The  
direction control (DIR) determines which bus will receive data when OE is low. In the isolation mode (OE high),  
A data may be stored in one register and/or B data may be stored in the other register.  
When an output function is disabled, the input function is still enabled and may be used to store and transmit  
data. Only one of the two buses, A or B, may be driven at a time.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
The SN74ABT646 is available in TI’s shrink small-outline package (DB), which provides the same I/O pin count  
and functionality of standard small-outline packages in less than half the printed-circuit-board area.  
The SN54ABT646 is characterized for operation over the full military temperature range of –55°C to 125°C. The  
SN74ABT646 is characterized for operation from –40°C to 85°C.  
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.  
Copyright 1994, Texas Instruments Incorporated  
UNLESS OTHERWISE NOTED this document contains PRODUCTION  
DATA information current as of publication date. Products conform to  
specifications per the terms of Texas Instruments standard warranty.  
Production processing does not necessarily include testing of all  
parameters.  
2–1  
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...16

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SN74ABT646DB 替代型号

型号 品牌 替代类型 描述 数据表
SN74ABT646ADBR TI

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SN74ABT646ADB TI

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