54AC16646

更新时间： 2024-01-28 16:57:52

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
10页	218K
描述
16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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54AC16646 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	DFP	包装说明：	DFP, FL56,.4,25
针数：	56	Reach Compliance Code：	not_compliant
ECCN代码：	3A001.A.2.C	HTS代码：	8542.39.00.01
风险等级：	5.92	其他特性：	DIRECTION CONTROL; SELECT INPUT FOR MULTIPLEXED TRANSMISSION OF REGISTERED OR REAL TIME DATA
控制类型：	INDEPENDENT CONTROL	计数方向：	BIDIRECTIONAL
系列：	AC	JESD-30 代码：	R-GDFP-F56
长度：	18.288 mm	负载电容（CL）：	50 pF
逻辑集成电路类型：	REGISTERED BUS TRANSCEIVER	最大I（ol）：	0.024 A
位数：	8	功能数量：	2
端口数量：	2	端子数量：	56
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出特性：	3-STATE	输出极性：	TRUE
封装主体材料：	CERAMIC, GLASS-SEALED	封装代码：	DFP
封装等效代码：	FL56,.4,25	封装形状：	RECTANGULAR
封装形式：	FLATPACK	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	3.3/5 V	Prop。Delay @ Nom-Sup：	15.7 ns
传播延迟（tpd）：	12.5 ns	认证状态：	Not Qualified
座面最大高度：	3.05 mm	子类别：	Bus Driver/Transceivers
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	MILITARY
端子形式：	FLAT	端子节距：	0.635 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
翻译：	N/A	触发器类型：	POSITIVE EDGE
宽度：	9.652 mm	Base Number Matches：	1

54AC16646 数据手册

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SCAS241A − MARCH 1990 − REVISED APRIL 1996

54AC16646 . . . WD PACKAGE

74AC16646 . . . DL PACKAGE

(TOP VIEW)

Members of the Texas Instruments

Widebust Family

Independent Registers for A and B Buses

Multiplexed Real-Time and Stored Data

1DIR

1OE

1CLKAB

1SAB

GND

1A1

1CLKBA

1SBA

GND

1B1

Flow-Through Architecture Optimizes

PCB Layout

Distributed V

Minimize High-Speed Switching Noise

and GND Pin Configurations

1A2

1B2

EPICt (Enhanced-Performance Implanted

CMOS) 1-mm Process

1A3

1A4

49 1B3

48 1B4

47 1B5

46 GND

45 1B6

44 1B7

43 1B8

42 2B1

41 2B2

40 2B3

39 GND

38 2B4

37 2B5

500-mA Typical Latch-Up Immunity at

125°C

1A5 10

GND 11

1A6 12

1A7 13

1A8 14

2A1 15

2A2 16

2A3 17

GND 18

2A4 19

2A5 20

Package Options Include Plastic 300-mil

Shrink Small-Outline (DL) Packages Using

25-mil Center-to-Center Pin Spacings and

380-mil Fine-Pitch Ceramic Flat (WD)

Packages Using 25-mil Center-to-Center

Pin Spacings

description

The ’AC16646 are 16-bit bus transceivers that

consist of D-type flip-flops and control circuitry,

with 3-state outputs arranged for multiplexed

transmission of data directly from the data bus or

from the internal storage registers. The devices

can be used as two 8-bit transceivers or one 16-bit

transceiver. 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 the bus transceivers and

registers.

2A6

2B6

2A7

2B7

2A8 24

33 2B8

GND

2SAB

2CLKAB

2DIR

GND

2SBA

2CLKBA

2OE

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. The select

controls (SAB and SBA) can multiplex stored and real-time (transparent mode) data. The circuitry used for

select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between

stored and real-time data. DIR determines which bus receives data when OE is active (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.

The 74AC16646 is packaged in the TI shrink small-outline package, which provides twice the functionality of

standard small-outline packages in the same printed-circuit-board area.

The 54AC16646 is characterized for operation over the full military temperature range of −55°C to 125°C. The

74AC16646 is characterized for operation from −40°C to 85°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

^{POST OFFICE BOX 1443}• HOUSTON, TEXAS 77251−1443

12 3 4 5 6 7...10

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