Datasheet > NAT9914BPL-27

NAT9914BPL-27

更新时间： 2024-02-14 23:49:13

品牌	Logo	应用领域
美国国家仪器公司 - NI		时钟驱动外围集成电路驱动器
页数	文件大小	规格书
3页	109K
描述
GPIB Bus Controller, CMOS, PQCC44, PLASTIC, LCC-44

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技术参数
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NAT9914BPL-27 技术参数

是否Rohs认证：	不符合	生命周期：	Contact Manufacturer
包装说明：	PLASTIC, LCC-44	Reach Compliance Code：	compliant
风险等级：	5.31	Is Samacsys：	N
其他特性：	SEATED HGT-NOM	总线兼容性：	68000; 68440; 80186
最大时钟频率：	20 MHz	驱动器接口标准：	IEEE 488
外部数据总线宽度：	8	JESD-30 代码：	S-PQCC-J44
长度：	16.51 mm	端子数量：	44
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装等效代码：	LDCC44,.7SQ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	4.318 mm	子类别：	Bus Controllers
最大压摆率：	45 mA	最大供电电压：	5.25 V
最小供电电压：	4.75 V	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	16.51 mm
uPs/uCs/外围集成电路类型：	BUS CONTROLLER, IEEE 488 (GPIB)	Base Number Matches：	1

NAT9914BPL-27 数据手册

Drop-In Replacement Chips for TI TMS9914A Controller

NI NAT9914 Series

• Register and pin compatible with

• Automatic EOS and/or

NL message detection

• Handles DMA transfers

TI TMS9914A (40-pin DIP, 44-pin PLCC,

and 44-pin QFP versions)

• Meets all IEEE 488.2 requirements

• Bus-line monitoring

• Preferred implementation

of requesting service

• No messages sent when

there are no Listeners

• Programmable data transfer rate

with T1 delays of 350 ns, 500 ns,

1.1 µs, and 2 µs

• Programmably compatible with

GPIB transceivers (TI, National

Semiconductor, and Motorola)

• 20 MHz maximum programmable

clock rate

• Low-power CMOS design with

TTL-compatible inputs

Overview

The National Instruments NAT9914BPD, NAT9914BPL, and

If you are looking for alternatives to

existing TI TMS9914A chip suppliers

or planning to upgrade your designs to

IEEE 488.2 without hardware changes,

you should consider using the

44 43 42 41 40

3399

RS0

RS1

RS2

INT

DIO3

38 DIO4

37 DIO5

NAT9914BPQ are drop-in replacement parts for the Texas Instruments

TMS9914A 40-pin DIP, 44-pin PLCC, and 44-pin QFP packages,

respectively. The NI NAT9914 is 100 percent register and pin compatible

with the 9914 on power-up and has additional features present in the

NAT4882 IEEE 488.2 Controller chip. Thus, the NAT9914 can perform all

interface functions defined by ANSI/IEEE Standard 488.1-1987 and

meets the additional requirements and recommendations of ANSI/IEEE

Standard 488.2-1992. The NAT9914 performs complete IEEE 488 Talker,

Listener, and Controller functions. The NAT9914 has the complete

power-up, but has complete IEEE 488.2 Controller functionality through

software. You can take advantage of IEEE 488.2 with minimal software

changes. Although the default clock input is 5 MHz, the NAT9914 can

use clock input values up to 20 MHz for increased performance. The

NAT9914 can also run in NEC 7210 register-compatible mode with a

software command.

DIO6

35 DIO7

DIO8

CONT#

SRQ#

D6 12

NAT9914BPL

1144

1155

31 ATN#

EOI#

DAV#

1177

NAT9914. Furthermore, because the

NAT9914 can accept faster clock

inputs, performance increases without

substantial firmware changes.

18 19 20 21 22 23 24 25 26 27 28

Figure 3. NAT9914BPL

General Architecture

The NAT9914 manages the IEEE 488 bus. You can program the IEEE 488

bus by writing control words into the appropriate registers. CPU-readable

status registers supply operational feedback. The NAT9914 mode

determines the function of these registers. On power-up or reset, the

NAT9914 registers resemble the TNS9914A register set, with additional

registers that supply extra functionality and IEEE 488.2 compatibility.

In this mode, the NAT9914 is completely pin-compatible with the

TI TMS9914A. If you enable the 7210 mode, the registers resemble

those of the NEC µPD7210 set, with additional registers that supply

extra functionality and IEEE 488.2 compatibility. This mode is not pin

compatible with the NEC µPD7210.

ACCRQ#

ACCGR#

CE#

WE#

DBIN

RS0

RS1

RS2

INT#

40 VDD

DIO1#

DIO2#

DIO3#

DIO4#

DIO5#

DIO6#

DIO7#

DIO8#

CONT#

SRQ#

ATN#

EOI#

DAV#

NRFD#

NDAC#

IFC#

REN#

33 32 31 30 29 28 27 26 25 24 23

DAV#

EOI#

ATN#

SRQ#

CONT#

DIO8

NAT9914BPQ

DIO7

INT#

RS2

RS1

RS0

DIO6

DIO5

DIO4

DIO3

3 4 5 6 7 8 9 10 11

CLK

RESET#

VSS

Figure 2. NAT9914BPQ

Figure 1. NAT9914BPD

12 3

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与NAT9914BPL-27相关器件

型号	品牌	描述	获取价格	数据表
NAT9914BPQ	ETC	IEEE 488.2 Controller Chip	获取价格
NAT9914BPQF-84	NI	GPIB Bus Controller, CMOS, PQFP44, ROHS COMPLIANT, PLASTIC, QFP-44	获取价格
NATC00	GLENAIR	Military Standard Connector Index	获取价格
NATC06	GLENAIR	Military Standard Connector Index	获取价格
NATC07	GLENAIR	Military Standard Connector Index	获取价格
NATC09	GLENAIR	Military Standard Connector Index	获取价格

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