HI-1574PCMF

更新时间： 2024-02-13 13:36:18

品牌	Logo	应用领域
HOLTIC		/
页数	文件大小	规格书
9页	164K
描述
3.3V Monolithic Dual Transceivers

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技术参数
数据手册

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HI-1574PCMF 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	HSOP,	针数：	20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.29
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e3
长度：	12.79 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	20
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	HSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, HEAT SINK/SLUG
峰值回流温度（摄氏度）：	250	认证状态：	Not Qualified
座面最大高度：	2.82 mm	标称供电电压：	3.3 V
表面贴装：	YES	技术：	CMOS
电信集成电路类型：	MIL-STD-1553 DATA BUS TRANSCEIVER	温度等级：	MILITARY
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	7.493 mm
Base Number Matches：	1

HI-1574PCMF 数据手册

HI-1573, HI-1574

PIN DESCRIPTIONS

(DIP & SOIC)

SYMBOL FUNCTION

DESCRIPTION

VDDA

BUSA

RXENA

GNDA

VDDB

BUSB

RXENB

GNDB

RXB

power supply

analog output

digital input

power supply

analog output

digital input

power supply

digital output

digital input

digital output

digital input

+3.3 volt power for transceiver A

MIL-STD-1533 bus driver A, positive signal

MIL-STD-1553 bus driver A, negative signal

Receiver A enable. If low, forces RXA and RXA low (HI-1573) or High (HI-1574)

Ground for transceiver A

+3.3 volt power for transceiver B

MIL-STD-1533 bus driver B, positive signal

MIL-STD-1553 bus driver B, negative signal

Receiver B enable. If low, forces RXB and RXB low (HI-1573) or High (HI-1574)

Ground for transceiver B

Receiver B output, inverted

RXB

Receiver B output, non-inverted

TXINHB

TXB

Transmit inhibit, bus B. If high BUSB, BUSB disabled

Transmitter B digital data input, non-inverted

Transmitter B digital data input, inverted

Receiver A output, inverted

TXB

RXA

Receiver A output, non-inverted

TXINHA

TXA

Transmit inhibit, bus A. If high BUSA, BUSA disabled

Transmitter A digital data input, non-inverted

Transmitter A digital data input, inverted

TXA

FUNCTIONAL DESCRIPTION

RECEIVER

The HI-1573 family of data bus transceivers contains dif-

ferential voltage source drivers and differential receivers.

They are intended for applications using a MIL-STD-1553

A/B data bus. The device produces a trapezoidal output

waveform during transmission.

The receiver accepts bi-phase differential data from the

MIL-STD-1553 bus through the same direct or transformer

coupled interface as the transmitter. The receiver’s differ-

ential input stage drives a filter and threshold comparator

that produces CMOS data at the RXA/B and RXA/B output

pins.

TRANSMITTER

Data input to the device’s transmitter section is from the

complementary CMOS inputs TXA/B and TXA/B. The

transmitter accepts Manchester II bi-phase data and con-

verts it to differential voltages on BUSA/B and BUSA/B.

The transceiver outputs are either direct or transformer

coupled to the MIL-STD-1553 data bus. Both coupling

methods produce a nominal voltage on the bus of 7.5 volts

peak to peak.

Each set of receiver outputs can be independently forced

to a logic "0" (HI-1573) or logic “1” (HI-1574) by setting

RXENAor RXENB low.

MIL-STD-1553 BUS INTERFACE

A direct coupled interface (see Figure 2) uses a 1:2.5 ratio

isolation transformer and two 55 ohm isolation resistors

between the transformer and the bus.

The transmitter is automatically inhibited and placed in the

high impedance state when both TXA/B and TXA/B are ei-

ther at a logic “1” or logic “0” simultaneously. A logic “1” ap-

plied to the TXINHA/B input will force the transmitter to the

high impedance state, regardless of the state of TXA/B and

TXA/B.

In a transformer coupled interface (see Figure 3), the

transceiver is connected to a 1:1.79 isolation transformer

which in turn is connected to a 1:1.4 coupling transformer.

The transformer coupled method also requires two

coupling resistors equal to 75% of the bus characteristic

impedence (Zo) between the coupling transformer and the

bus.

HOLT INTEGRATED CIRCUITS

123 4 5 6 7...9

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