HI-4851PSTF,HI-4851PSTF pdf中文资料,HI-4851PSTF引脚图,HI-4851PSTF电路-Datasheet-电子工程世界

March 2013

GENERAL DESCRIPTION

The

HI-485x devices are slew-rated controlled TIA-485/TIA-422-B

and ISO 8482:1993 compliant transceivers with extended power-

supply, temperature and receiver common-mode range for avionic

and industrial control applications. The devices can operate over an

extended supply (3.0V to 5.5V) and temperature (-55˚C to 125˚C)

range. The receiver input common-mode range of [-15, 20]V, and

±24V for the half and full duplex configurations respectively is valid

over the full supply and temperature specification. The HI-4850 has

a half-duplex configuration, and the HI-4851 and HI-4852 are full-

duplex. Slew rates are optimized for data rates below 5 Mbps. The

drivers slew-rate control and pre-emphasis reduces high-frequency

components in the output signal transitions and also compensates

for impedance mismatch. These features provide optimum EMI and

jitter performance, essential in EMI sensitive environments and

high-integrity data link applications such as in aerospace and

industrial controls.

The devices

deliver at least ± 1.50V (VDD=3.0V), and ± 2.45V

(VDD= 4.5V) output levels at an extended temperature range of

-55°C to +125°C into a differential load of 54Ω and 50pF.

The receiver offers true Fail-Safe operation, providing a

guaranteed logic high on RO when the bus is open-circuit, short-

circuit, or idle (terminated but not driven). The receiver’s worst

case minimum input resistance is at least 90KΩ, supporting up to

224 nodes

FEATURES

Slew Rate Control and Pre-Emphasis for superior EMI

Extended Power Supply Operating Range 3.0V to 5.5V

Extended Receiver Common-Mode Range:

-15.0V to 20.0V Half-Duplex

±24V Full-Duplex

ESD Protection

16KV HBM (Bus Pins)

8KV HBM (Logic Pins)

5 Mbps Date Rate up to 100 ft. CAT-5 UTP

2 Mbps Data Rate up to 1000 ft. CAT-5 UTP

Current Limiting Protection

Extended Temperature Range -55°C

to

125°C

Industry Standard 75176 Pin-out

PIN CONFIGURATIONS

(Top Views)

RO - 1

RE - 2

DE - 3

DI - 4

VDD - 1

RO - 2

DI - 3

GND - 4

8 - VDD

HI-4850PSx

7-B

6-A

5 - GND

8-A

HI-4851PSx

7-B

6-Z

5-Y

Extended Temperature Range RS-485/422 Networks

Process Control and Factory Automation

EMI Emission Sensitive Avionics

Industrial Field Bus Networks

Networks requiring extended common-mode range

RO

RE

DE

DI

1

2

3

4

-5

GND 6

GND 7

-8

6-

5-

4

VDD

3-

12 A

11 B

10 Z

9 Y

APPLICATIONS

8-Pin Plastic SOIC package (Narrow Body)

Device Selection Table

Part

Half/Full

Number Duplex

HI-4850

HI-4851

HI-4852

Half

Full

Data Rate

(Mbps)*

≤ 5.0

HI-4852PCx

Package

8-pin SOIC

14-pin SOIC

16-pin QFN

16- pin 4mm x 4mm Chip-scale package

- 1

RO 2

RE 3

DE 4

DI 5

GND 6

GND 7

14 VDD

13 -

12 A

HI-4852PSx

11 B

10 Z

9 Y

8

-

* For RS-485 Transceivers optimized for data rates up

to 20Mbps please refer to the HI-4853 data sheet.

14-Pin Plastic SOIC package (Narrow Body)

(DS4850 Rev. C)

HOLT INTEGRATED CIRCUITS

www.holtic.com

03/13

HI-4850

PIN DESCRIPTIONS

SIGNAL

RO

__

RE

DE

FUNCTION

OUTPUT

INPUT

DESCRIPTION

Receiver Output. If

V

ID

≥

-50mV, then RO is high. If V

ID

< -150mV then RO is low. If the

bus is shorted, open or terminated but not driven by another terminal, RO will be high.

__

Receiver Enable. RE=

Low enables the receiver. RE High forces the receiver output

(RO) into a high impedance state. Internal 450KΩ pull-down resistor

Driver Enable. DE = high enables the driver. DE = low will force the driver output into

__

a high impedance state and the device will function as a line receiver if RE is also low.

Internal 450KΩ pull-up resistor

Driver Input. Forces the logic state of the Driver’s output, if Driver is enabled. Internal

450KΩ pull-up resistor

Chip ground, 0V Supply

Non-inverting Receiver Input / Driver Output.

Inverting Receiver Input / Driver Output.

Positive Supply: 3.0V

≤

VDD

≤

5.5V

DI

GND

A, Y

B, Z

VDD

INPUT

POWER

ANALOG I/O

POWER

TX FUNCTION TABLE

TRANSMITTING

RX FUNCTION TABLE

RECEIVING

INPUTS

RE DE DI

1

X

1

X

0

X

1

0

X

LINE

CONDITION

Transmit logic high

Transmit logic low

Disable

Shutdown

OUTPUTS

B

A

0

1

0

Hi-Z

Typical Operating Circuit

RO

RX

VDD

B

R

T

DE

DI

TX

HI-4850

A

INPUTS

__

RE DE

0

X

0

X

0

1

0

BUS PINS

V

ID

= V

A

- V

B

-150mV < V

ID

< -50mV

OUTPUT

OPERATION

RO

-50mV

≤

V

ID

V

ID

≤

-150mV

Open or Shorted

Idle and terminated

X

1

0

1

Hi-Z

Undefined Input

Receiver logic high

Receiver logic low

Default

Disabled

Shutdown

VDD

B

R

T

A

RX

RO

RE

DE

GND

A

HI-4850

GND

B

HI-4850

TX

HI-4850

DI

A

Short unterminated stubs

Figure 1 - Typical half-duplex configuration

VDD

RX

RO

A

R

T

B

R

T

Y

TX

Z

B

R

T

R

T

A

HI-4851

RX

GND

DI

RO

DI

TX

GND

HI-4851

Z

Y

VDD

Figure 2 - Typical full-duplex 8-pin configuration

HOLT INTEGRATED CIRCUITS

2

HI-4850

(Voltages referenced to GND = 0V)

ABSOLUTE MAXIMUM RATINGS

Operating Temperature Range:(Industrial).........................-40°C to +85°C

(Hi-Temp)........................-55°C to +125°C

Internal Power Dissipation:..............................................................900mW

Storage Temperature Range: .........................................-65°C to +150°C

Solder Temperature:

(Reflow)......................................... +260°C

Supply Voltage, VDD:...............................................................................7 V

Control Input Currents: ...................................................-100mA to 100mA

Control Input Voltages:..................................................-0.5V to VDD + 0.5V

__

-0.5V to VDD + 0.5V

Digital Input Voltages (DI, DE, RE):.................................

Bus Voltage (AY, BZ):............................................................................±25V

Digital Output Voltage (RO):...............................................

-0.5V to V + 0.5V

Short-Circuit Duration, Driver (V:

±15V).....................................................

∞

ESD (Human Body Model):

AY, BZ,VDD,GND pins:.......................................................±16KV

__

DI, DE, RE, RO pins:.............................................................±8KV

NOTE:

Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only.

Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

SPECIFIED OPERATING CONDITIONS

PARAMETERS

Supply Voltage

Temperature

TX Common-Mode Bus Loading

RX Input Common-Mode Voltage

Differential Load Resistance

Differential Load Capacitance

Digital Input High Voltage

Digital Input Low Voltage

Digital Input Current high

Digital Input Pull-Down Current

Digital Input Current low

Digital Input Pull-Up Current

SYMBOL

V

DD

T

V

OCM

V

ICM

R

L

C

L

V

IH

V

IL

I

IH

I

PD

I

IL

I

PU

See Figure 4

Half-Duplex

__

DE, DI, RE

__

DE, DI, RE

DE, DI, V

IH

= V

DD

__

RE, V

IH

= V

DD

__

RE, V

IH

= 0

DE, DI, V

IH

= 0V

CONDITIONS

LIMITS

MIN

3.0

-55

-7

-16

54

70

30

1

6

-1

-18

18

-6

60

100

TYP

3.3 / 5.0

MAX

5.5

125

12

20

UNIT

V

˚C

V

Ω

pF

%V

DD

%V

DD

μA

∞

DRIVER DC ELECTRICAL CHARACTERISTICS

VDD = 3.0V to 3.6V or 4.5V to 5.5V; T = -55˚C to 125˚C; MIN and MAX values are at range boundaries

PARAMETER

Differential Output Voltage with

no load

Differential Output Voltage into load

with no common-mode voltage

Differential Output Voltage into load

with applied common-mode voltage

Differential Output Over/Under Shoot

Change in Differential Output

Voltage between logic states

Output Common-Mode Voltage

Change in output Common-Mode

Voltage between logic states

Bus Pin Leakage Current

(High-Z Power On)

Bus Pin Leakage Current (Power Off)

Peak Short Circuit Current

Steady State Short Circuit Current

Differential Output Capacitance

Static Supply Current

Supply Current (Shutdown)

SYMBOL

|V

OD1

|

|V

OD2

|

|V

OD3

|

CONDITIONS

R

L

=

∞

R

L

= 54Ω, C

L

= 50pF

-7V

≤

V

OCM

≤

12V

T

A

= 25ºC

FIGURE

3

4

VDD = 3.3V ± 10%

MIN

V

DD

-0.1

1.5

TYP

MAX

V

DD

3.0

5.5

VDD = 5.0V ± 10%

MIN

V

DD

-0.1

2.45

TYP

MAX

V

DD

4.0

3.2

-125

2.15

-150

-200

-250

0

10

100

2.45

125

3.0

150

200

250

50

16

12

400

UNIT

V

%V

OD

mV

V

mV

μA

mA

μA

pF

mA

μA

∆V

OD

V

OCM

∆V

OCM

I

OHZ1

I

OHZ2

I

SCPK

I

SC

C

OD

I

DD

I

DDQ

R

L

= 54Ω, C

L

= 50pF

R

L

= 54Ω, C

L

= 50pF

R

L

= 54Ω, C

L

= 50pF

DE=0, -15V≤ VOCM

≤

15V

DE=0, -12V≤ VOCM

≤

15V

V

OCM

= ±15V

DE = V

DD

, Bus Pin = ±15

DE = V

DD

, Bus Pin = ±15

DE = 0

DE=V

DD

, RE=0, R

L

=∞

DE=0, RE=V

DD

, R

L

=∞

3

4

-125

1.40

-125

-200

-230

0

8

90

1.60

125

2.0

125

200

230

50

16

10

110

HOLT INTEGRATED CIRCUITS

3

HI-4850

DRIVER SWITCHING CHARACTERISTICS

VDD = 3.0V - 3.6V or 4.5V - 5.5V as noted , Operating temperature range.

PARAMETER

Propagation Delay Low - to - High

Propagation Delay High - to - Low

Differential Rise Time

Differential Fall Time

Output Pulse Skew

Driver Enable to Output High

Driver Enable to output Low

Driver Disable from Output High

Driver Disable from Output Low

Shutdown to Active Output Delay

Shutdown Delay

SYMBOL

t

PDR

t

PDF

t

r

t

f

t

MSK

t

ZH

t

ZL

t

HZ

t

LZ

t

ON

t

OFF

CONDITIONS

R

L =

54



.

C

L

=50pF

R

L =

54



,

C

L

=50pF

R

L =

54



,

C

L

=50pF

R

L =

54



,

C

L

=50pF

R

L =

54



,

C

L

=50pF

R

L =

500



,

C

L

=50pF

R

L =

500



,

C

L

=50pF

R

L =

500



,

C

L

=50pF

R

L =

500



,

C

L

=50pF

R

L =

500



,

C

L

=50pF

FIGURE

5&6

7

8

VDD = 3.3V ± 10%

MIN

110

90

TYP

145

105

2

95

20

MAX

200

120

8

120

33

10

VDD = 5.0V ± 10%

MIN

108

115

TYP

150

135

2

90

18

MAX

205

155

125

8

117

30

10

UNIT

ns

µs

RECEIVER DC ELECTRICAL CHARACTERISTICS

VDD = 3.0V - 3.6V or 4.5V - 5.5V as noted , Operating temperature range.

PARAMETER

Differential Input Threshold Voltage

Input Hysteresis

Input Resistance

RO Output High Level

RO Output Low Level

RO Output Hi-Z Leakage Current

SYMBOL

V

TH

V

HYS

R

IN

V

OH

V

OL

I

OZH

CONDITIONS

-15V

≤

V

ICM

≤

+15V

≤

-15

≤

V

ICM

≤

+20

-12V

≤

V

ICM

≤

+15V

≤

V

ICM

= 0V

V

DD

-20V

≤

V

ICM

+20

+15V

≤

-15

≤

V

ICM

≤

-12V

≤

V

ICM

≤

+15V

≤

V

ICM

= +200mV

V

ID

= +200mV

OUT

= -5.0mA

I

OUT

= -3.0mA

V

ICM

= -200mV

V

ID

= -200mV

I

OUT

=

+3.0mA

5.0mA

I

OUT

FIGURE

VDD = 3.3V ± 10%

MIN

TYP

MAX

VDD = 5.0V ± 10%

MIN

-200

TYP

-100

28

25

MAX

-50

33

30

UNIT

mV

K



K



V

DD

-200

17

20

-100

28

25

-50

33

30

17

20

80

90%

10%

-1

1

-1

92

90%

92

10%

1

V

DD

µA

0V

≤

V

RO

≤

V

DD

≤

RECEIVER SWITCHING CHARACTERISTICS

VDD = 3.0V - 3.6V or 4.5V - 5.5V as noted , Operating temperature range.

PARAMETER

Propagation Delay Low - to - High

Propagation Delay High - to - Low

RO Output Rise Time

RO Output Fall Time

Output Pulse Skew

Receiver Enable to RO Output High

Receiver Enable to output Low

Receiver Disable from Output High

Receiver Disable from Output Low

Shutdown to RO Active Output Delay

Shutdown Delay to RO HiZ

SYMBOL

t

RPDR

t

RPDF

t

Rr

t

Rf

t

RMSK

t

RZH

t

RZL

t

RHZ

t

RLZ

t

RON

t

ROFF

CONDITIONS

V

ID =

+1.5V, C

L

=15pF

V

ID =

-1.5V

,

C

L

=15pF

V

ID =

+1.5V, C

L

=15pF

V

ID =

-1.5V

,

C

L

=15pF

V

ID =

+1.5V, C

L

=15pF

R

L

= 1K



,

C

L

=15pF

R

L

= 1K



,

C

L

=15pF

R

L

= 1K



,

C

L

=15pF

R

L

= 1K



,

C

L

=15pF

R

L

= 1K



,

C

L

=15pF

R

L

= 1K



,

C

L

=15pF

FIGURE

9

8

9

8

9

8

VDD = 3.3V ± 10%

MIN

20

1.1

TYP

26

1.9

0.8

12

6

60

MAX

32

3.3

1.6

16

10

5

100

VDD = 5.0V ± 10%

MIN

20

1.1

TYP

26

1.9

0.8

12

6

60

MAX

32

3.3

1.6

16

10

5

100

UNIT

ns

µs

ns

8

9

8

7

9

7

9

7

9

7

9

7

HOLT

INTEGRATED CIRCUITS

4

HI-4850

TEST CIRCUITS

DE

+

AY

DI

TX

BZ

|V

OD

|

50pF

54Ω

-

Figure 3 - Driver DC Characteristics ( V

OD1

, V

OD2

, and

∆V

OD

)

DE

+

AY

DI

TX

BZ

|V

OD3

|

50pF

27Ω

VOCM

27Ω

DI

TX

+

AY

|V

OD3

|

BZ

60Ω

375Ω

-

V

OCM

Figure 4 - Driver DC Characteristics with and without Common-Mode Loading ( V

OCM

, V

OD3

, and

∆V

OD

)

DE

1Mpbs

DI

AY

TX

BZ

50pF

54Ω

Figure 5 - Driver Switching Characteristics (t

PDR

, t

PDF

, t

r

and t

f

)

VDD

DI

0V

1.5V

t

PDR

BZ

V

O

AY

1/2V

O

V

O

V

OD

=

V(AY) - V(BZ)

0V

-V

O

10%

t

PDF

1/2V

O

t

MSK

90%

t

MSK

10%

t

r

t

f

Figure 6. Driver Switching Waveforms

HOLT INTEGRATED CIRCUITS

5

HI-4851PSTF

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