74LV245PW [NEXPERIA]

Octal bus transceiver; 3-stateProduction;


型号：	74LV245PW
厂家：	Nexperia
描述：	Octal bus transceiver; 3-stateProduction
文件：	总13页 (文件大小：237K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

74LV245

Octal bus transceiver; 3-state

Rev. 5 — 28 September 2021

Product data sheet

1. General description

The 74LV245 is an 8-bit transceiver with 3-state outputs. The device features an output enable

(OE) and send/receive (DIR) for direction control. A HIGH on OE causes the outputs to assume a

high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting

resistors to interface inputs to voltages in excess V_CC

2. Features and benefits

•

Wide supply voltage range from 1.0 V to 5.5 V

CMOS low power dissipation

Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

Optimized for low voltage applications: 1.0 V to 3.6 V

Accepts TTL input levels between V_CC= 2.7 V and V_CC= 3.6 V

Typical output ground bounce < 0.8 V at V_CC= 3.3 V and T_amb= 25 °C

Typical HIGH-level output voltage (V_OH) undershoot: > 2 V at V_CC= 3.3 V and T_amb= 25 °C

Complies with JEDEC standards:

•

JESD8-7 (1.65 V to 1.95 V)

JESD8-5 (2.3 V to 2.7 V)

JESD8C (2.7 V to 3.6 V)

JESD36 (4.5 V to 5.5 V)

•

ESD protection:

•

HBM JESD22-A114E exceeds 2000 V

MM JESD22-A115-A exceeds 200 V

Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Nexperia

74LV245

Octal bus transceiver; 3-state

3. Ordering information

Table 1. Ordering information

Type number

Package

Temperature range Name

Description

Version

74LV245D

-40 °C to +125 °C

SO20

plastic small outline package; 20 leads;

body width 7.5 mm

SOT163-1

74LV245PW

-40 °C to +125 °C

TSSOP20

plastic thin shrink small outline package; 20 leads;

body width 4.4 mm

SOT360-1

4. Functional diagram

DIR

3EN1

3EN2

mna174

mna175

Fig. 1. Logic symbol

Fig. 2. IEC logic symbol

74LV245

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Product data sheet

Rev. 5 — 28 September 2021

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Nexperia

74LV245

Octal bus transceiver; 3-state

5. Pinning information

5.1. Pinning

74LV245

DIR

GND

001aaj962

001aaj963

Fig. 3. Pin configuration SOT163-1 (SO20)

Fig. 4. Pin configuration SOT360-1 (TSSOP20)

5.2. Pin description

Table 2. Pin description

Symbol

Description

DIR

direction control

data input/output

ground (0 V)

A0, A1, A2, A3, A4, A5, A6, A7

2, 3, 4, 5, 6, 7, 8, 9

GND

B0, B1, B2, B3, B4, B5, B6, B7

18, 17, 16, 15, 14, 13, 12, 11

data input/output

output enable input (active LOW)

supply voltage

V_CC

6. Functional description

Table 3. Function selection

H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.

Input

Output/input

DIR

A = B

input

B = A

74LV245

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Product data sheet

Rev. 5 — 28 September 2021

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Nexperia

74LV245

Octal bus transceiver; 3-state

7. Limiting values

Table 4. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol

V_CC

I_IK

Parameter

Conditions

Min

Max Unit

supply voltage

-0.5

+7.0

±20

±50

±35

input clamping current

output clamping current

output current

V_I< -0.5 V or V_I> V_CC+ 0.5 V

V_O< -0.5 V or V_O> V_CC+ 0.5 V

V_O= -0.5 V to (V_CC+ 0.5 V)

[1]

I_OK

I_O

I_CC

supply current

I_GND

T_stg

P_tot

ground current

-70

-65

storage temperature

total power dissipation

+150 °C

500 mW

T_amb= -40 °C to +125 °C

[2]

[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

[2] For SOT163-1 (SO20) package: P_totderates linearly with 12.3 mW/K above 109 °C.

For SOT360-1 (TSSOP20) package: P_totderates linearly with 10.0 mW/K above 100 °C.

8. Recommended operating conditions

Table 5. Recommended operating conditions

Voltages are referenced to GND (ground = 0 V).

Symbol

V_CC

Parameter

Conditions

Min

Typ

Max

Unit

supply voltage

[1]

1.0

3.3

5.5

V_CC

+125

500

200

100

V_I

input voltage

V_O

output voltage

T_amb

Δt/ΔV

ambient temperature

input transition rise and fall rate

-40

+25

°C

V_CC= 1.0 V to 2.0 V

V_CC= 2.0 V to 2.7 V

V_CC= 2.7 V to 3.6 V

V_CC= 3.6 V to 5.5 V

ns/V

[1] The static characteristics are guaranteed from V_CC= 1.2 V to V_CC= 5.5 V, but LV devices are guaranteed to function down to

V_CC= 1.0 V (with input levels GND or V_CC).

74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

9. Static characteristics

Table 6. Static characteristics

At recommended operating conditions. Voltages are referenced to GND (ground = 0 V).

Symbol Parameter

Conditions

-40 °C to +85 °C

-40 °C to +125 °C Unit

Min

Typ[1] Max

Min

Max

V_IH

HIGH-level input voltage

V_CC= 1.2 V

0.9

V_CC= 2.0 V

1.4

V_CC= 2.7 V to 3.6 V

V_CC= 4.5 V to 5.5 V

V_CC= 1.2 V

2.0

0.7V_CC

V_IL

LOW-level input voltage

0.3

0.6

0.8

0.3V_CC

0.3

0.6

0.8

0.3V_CC

V_CC= 2.0 V

V_CC= 2.7 V to 3.6 V

V_CC= 4.5 V to 5.5 V

V_OH

HIGH-level output voltage V_I= V_IHor V_IL

I_O= -100 μA; V_CC= 1.2 V

1.2

2.0

2.7

3.0

4.5

2.82

4.2

I_O= -100 μA; V_CC= 2.0 V

I_O= -100 μA; V_CC= 2.7 V

I_O= -100 μA; V_CC= 3.0 V

I_O= -100 μA; V_CC= 4.5 V

I_O= -8 mA; V_CC= 3.0 V

I_O= -16 mA; V_CC= 4.5 V

1.8

2.5

2.8

4.3

2.4

3.6

1.8

2.5

2.8

4.3

2.2

3.5

V_OL

LOW-level output voltage

V_I= V_IHor V_IL

I_O= 100 μA; V_CC= 1.2 V

I_O= 100 μA; V_CC= 2.0 V

I_O= 100 μA; V_CC= 2.7 V

I_O= 100 μA; V_CC= 3.0 V

I_O= 100 μA; V_CC= 4.5 V

I_O= 8 mA; V_CC= 3.0 V

0.2

0.40

0.55

1.0

0.2

0.50

0.65

1.0

0.25

0.35

I_O= 16 mA; V_CC= 4.5 V

V_I= V_CCor GND; V_CC= 5.5 V

I_I

input leakage current

μA

I_OZ

OFF-state output current

V_I= V_IHor V_IL;

V_O= V_CCor GND; V_CC= 5.5 V

I_CC

supply current

V_I= V_CCor GND; I_O= 0 A;

V_CC= 5.5 V

160

850

μA

ΔI_CC

additional supply current

per input; V_I= V_CC- 0.6 V;

V_CC= 2.7 V to 3.6 V

500

C_I

input capacitance

3.5

C_I/O

input/output capacitance

[1] Typical values are measured at T_amb= 25 °C.

74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

10. Dynamic characteristics

Table 7. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V). For test circuit see Fig. 7.

Symbol Parameter

Conditions

-40 °C to +85 °C

-40 °C to +125 °C Unit

Min

Typ[1]

Max

Min

Max

t_pd

propagation

delay

An, Bn to Bn, An; see Fig. 5

V_CC= 1.2 V

[2]

V_CC= 2.0 V

V_CC= 2.7 V

V_CC= 3.0 V to 3.6 V; C_L= 15 pF

V_CC= 3.0 V to 3.6 V

V_CC= 4.5 V to 5.5 V

OE to An, Bn; see Fig. 6

V_CC= 1.2 V

[3]

[2]

t_en

enable time

8.5

V_CC= 2.0 V

V_CC= 2.7 V

V_CC= 3.0 V to 3.6 V

V_CC= 4.5 V to 5.5 V

OE to An, Bn; see Fig. 6

V_CC= 1.2 V

[3]

[2]

t_dis

disable time

V_CC= 2.0 V

V_CC= 2.7 V

V_CC= 3.0 V to 3.6 V

V_CC= 4.5 V to 5.5 V

[3]

[4]

11.5

C_PD

power

C_L= 50 pF; f_i= 1 MHz;

dissipation

capacitance

V_I= GND to V_CC; V_CC= 3.3 V

[1] All typical values are measured at T_amb= 25 °C.

[2] t_pdis the same as t_PLHand t_PHL

t_enis the same as t_PZLand t_PZH

t_disis the same as t_PLZand t_PHZ

[3] Typical values are measured at nominal supply voltage (V_CC= 3.3 V and V_CC= 5.0 V).

[4] C_PDis used to determine the dynamic power dissipation (P_Din μW).

P_D= C_PDx V_CC²x f_ix N + Σ(C_L× V_CC²x f_o) where:

f_i= input frequency in MHz, f_o= output frequency in MHz

C_L= output load capacitance in pF

V_CC= supply voltage in Volts

N = number of inputs switching

Σ(C_Lx V_CC²x f_o) = sum of the outputs.

74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

10.1. Waveforms and test circuit

An, Bn input

GND

PLH

PHL

Bn, An output

mna176

Measurement points are given in Table 8.

V_OLand V_OHare typical voltage output levels that occur with the output load.

Fig. 5. The input (An, Bn) to output (Bn, An) propagation delays

OE input

GND

PZL

PLZ

output

LOW-to-OFF

OFF-to-LOW

PHZ

PZH

output

HIGH-to-OFF

OFF-to-HIGH

GND

outputs

enabled

outputs

enabled

outputs

disabled

mna367

Measurement points are given in Table 8.

V_OLand V_OHare typical voltage output levels that occur with the output load.

Fig. 6. Enable and disable times

Table 8. Measurement points

Supply voltage

V_CC

Input

Output

V_M

V_X

V_Y

< 2.7 V

0.5V_CC

1.5 V

0.5V_CC

1.5 V

V_OL+ 0.1V_CC

V_OL+ 0.3 V

V_OH- 0.1V_CC

V_OH- 0.3 V

V_OH- 0.1V_CC

2.7 V to 3.6 V

≥ 4.5 V

0.5V_CC

V_OL+ 0.1V_CC

74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

90 %

negative

pulse

10 %

0 V

90 %

positive

pulse

10 %

0 V

EXT

DUT

001aae331

Test data is given in Table 9.

Definitions for test circuit:

R_L= Load resistance.

C_L= Load capacitance including jig and probe capacitance.

R_T= Termination resistance should be equal to output impedance Z_oof the pulse generator.

V_EXT= External voltage for measuring switching times.

Fig. 7. Test circuit for measuring switching times

Table 9. Test data

Supply voltage Input

Load

C_L

V_EXT

V_CC

V_I

t_r, t_f

R_L

t_PHL, t_PLH

open

t_PZH, t_PHZ

GND

t_PZL, t_PLZ

2V_CC

< 2.7 V

V_CC

2.7 V

V_CC

≤ 2.5 ns

50 pF

1 kΩ

2.7 V to 3.6 V

≥ 4.5 V

15 pF, 50 pF 1 kΩ

50 pF 1 kΩ

open

GND

2V_CC

open

GND

2V_CC

74LV245

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Product data sheet

Rev. 5 — 28 September 2021

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Nexperia

74LV245

Octal bus transceiver; 3-state

11. Package outline

SO20: plastic small outline package; 20 leads; body width 7.5 mm

SOT163-1

(A )

pin 1 index

detail X

10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

max.

(1)

UNIT

0.3

0.1

2.45

2.25

0.49

0.36

0.32

0.23

13.0

12.6

7.6

7.4

10.65

10.00

1.1

0.4

1.1

1.0

0.9

0.4

2.65

0.1

0.25

0.01

1.27

0.05

1.4

0.25 0.25

0.1

8^o

0^o

0.012 0.096

0.004 0.089

0.019 0.013 0.51

0.014 0.009 0.49

0.30

0.29

0.419

0.394

0.043 0.043

0.016 0.039

0.035

0.016

inches

0.055

0.01 0.01 0.004

Note

1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

JEITA

99-12-27

03-02-19

SOT163-1

075E04

MS-013

Fig. 8. Package outline SOT163-1 (SO20)

74LV245

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Product data sheet

Rev. 5 — 28 September 2021

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Nexperia

74LV245

Octal bus transceiver; 3-state

TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm

SOT360-1

(A )

pin 1 index

detail X

2.5

5 mm

scale

DIMENSIONS (mm are the original dimensions)

(1)

(2)

(1)

UNIT

max.

8^o

0^o

0.15

0.05

0.95

0.80

0.30

0.19

0.2

0.1

6.6

6.4

4.5

4.3

6.6

6.2

0.75

0.50

0.4

0.3

0.5

0.2

1.1

0.65

0.2

0.13

0.1

0.25

Notes

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

JEITA

99-12-27

03-02-19

SOT360-1

MO-153

Fig. 9. Package outline SOT360-1 (TSSOP20)

74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

12. Abbreviations

Table 10. Abbreviations

Acronym

CMOS

DUT

Description

Complementary Metal Oxide Semiconductor

Device Under Test

ESD

ElectroStatic Discharge

Human Body Model

HBM

Machine Model

TTL

Transistor-Transistor Logic

13. Revision history

Table 11. Revision history

Document ID

74LV245 v.5

Modifications:

Release date

20210928

Data sheet status

Change notice

Supersedes

Product data sheet

74LV245 v.4

•

The format of this data sheet has been redesigned to comply with the identity guidelines of

Nexperia.

•

Legal texts have been adapted to the new company name where appropriate.

Section 1 and Section 2 updated.

Section 7: Derating values for P_tottotal power dissipation updated.

Type number 74LV245DB (SOT339-1/SSOP20) removed.

74LV245 v.4

20160309

Type number 74LV245N (SOT146-1) removed.

20090415 Product data sheet

Product data sheet

74LV245 v.3

74LV245 v.2

Modifications:

•

74LV245 v.3

Modifications:

•

The format of this data sheet has been redesigned to comply with the new identity guidelines

of NXP Semiconductors.

Legal texts have been adapted to the new company name when appropriate.

74LV245 v.2

74LV245 v.1

19980420

19970303

Product specification

74LV245 v.1

74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

injury, death or severe property or environmental damage. Nexperia and its

suppliers accept no liability for inclusion and/or use of Nexperia products in

such equipment or applications and therefore such inclusion and/or use is at

the customer’s own risk.

14. Legal information

Quick reference data — The Quick reference data is an extract of the

product data given in the Limiting values and Characteristics sections of this

document, and as such is not complete, exhaustive or legally binding.

Data sheet status

Document status Product

Definition

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. Nexperia makes no representation

or warranty that such applications will be suitable for the specified use

without further testing or modification.

[1][2]

status [3]

Objective [short]

data sheet

Development

This document contains data from

the objective specification for

product development.

Customers are responsible for the design and operation of their applications

and products using Nexperia products, and Nexperia accepts no liability for

any assistance with applications or customer product design. It is customer’s

sole responsibility to determine whether the Nexperia product is suitable

and fit for the customer’s applications and products planned, as well as

for the planned application and use of customer’s third party customer(s).

Customers should provide appropriate design and operating safeguards to

minimize the risks associated with their applications and products.

Preliminary [short]

data sheet

Qualification

Production

This document contains data from

the preliminary specification.

Product [short]

data sheet

This document contains the product

specification.

[1] Please consult the most recently issued document before initiating or

completing a design.

Nexperia does not accept any liability related to any default, damage, costs

or problem which is based on any weakness or default in the customer’s

applications or products, or the application or use by customer’s third party

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liability in this respect.

[2] The term 'short data sheet' is explained in section "Definitions".

[3] The product status of device(s) described in this document may have

changed since this document was published and may differ in case of

multiple devices. The latest product status information is available on

the internet at https://www.nexperia.com.

Definitions

Limiting values — Stress above one or more limiting values (as defined in

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

damage to the device. Limiting values are stress ratings only and (proper)

operation of the device at these or any other conditions above those

given in the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. Nexperia does not give any representations or

warranties as to the accuracy or completeness of information included herein

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with the same product type number(s) and title. A short data sheet is

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data sheet shall define the specification of the product as agreed between

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In the event that customer uses the product for design-in and use in

automotive applications to automotive specifications and standards,

customer (a) shall use the product without Nexperia’s warranty of the

product for such automotive applications, use and specifications, and (b)

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74LV245

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Product data sheet

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Nexperia

74LV245

Octal bus transceiver; 3-state

Contents

1. General description......................................................1

2. Features and benefits.................................................. 1

3. Ordering information....................................................2

4. Functional diagram.......................................................2

5. Pinning information......................................................3

5.1. Pinning.........................................................................3

5.2. Pin description.............................................................3

6. Functional description................................................. 3

7. Limiting values............................................................. 4

8. Recommended operating conditions..........................4

9. Static characteristics....................................................5

10. Dynamic characteristics............................................ 6

10.1. Waveforms and test circuit........................................ 7

11. Package outline.......................................................... 9

12. Abbreviations............................................................11

13. Revision history........................................................11

14. Legal information......................................................12

For more information, please visit: http://www.nexperia.com

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Date of release: 28 September 2021

74LV245

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5 — 28 September 2021

13 / 13

74LV245PW [NEXPERIA]

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