TC74LCX245F(F) [TOSHIBA]

IC IC,BUS TRANSCEIVER,SINGLE,8-BIT,LCX/LVC-CMOS,SOP,20PIN,PLASTIC, Bus Driver/Transceiver;


型号：	TC74LCX245F(F)
厂家：	TOSHIBA
描述：	IC IC,BUS TRANSCEIVER,SINGLE,8-BIT,LCX/LVC-CMOS,SOP,20PIN,PLASTIC, Bus Driver/Transceiver 光电二极管逻辑集成电路
文件：	总12页 (文件大小：228K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TC74LCX245F/FT/FK

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74LCX245F,TC74LCX245FT,TC74LCX245FK

Low-Voltage Octal Bus Transceiver with 5-V Tolerant Inputs and Outputs

The TC74LCX245 is a high-performance CMOS octal bus

transceiver. Designed for use in 3.3-V systems, it achieves

high-speed operation while maintaining the CMOS low power

dissipation.

The device is designed for low-voltage (3.3 V) VCC applications,

but it could be used to interface to 5-V supply environment for

both inputs and outputs.

The direction of data transmission is determined by the level of

the DIR input. The enable input ( OE ) can be used to disable the

device so that the busses are effectively isolated.

All inputs are equipped with protection circuits against static

discharge.

TC74LCX245F

TC74LCX245FT

TC74LCX245FK

Features (Note)

•

Low-voltage operation: V

= 1.65 to 3.6 V

High-speed operation: t = 7.0 ns (max) (V

= 3.0 to 3.6 V)

Ouput current: |I |/I

= 24 mA (min) (V

= 3.0 V)

OH OL

Latch-up performance: ＞±500 mA

Available in JEITA SOP, TSSOP and VSSOP (US)

Bidirectional interface between 5.0 V and 3.3 V signals

Power-down protection provided on all inputs and outputs

Pin and function compatible with the 74 series

(74AC/VHC/HC/F/ALS/LS etc.) 245 type

Note: Do not apply a signal to any bus pins when it is in the

output mode. Damage may result.

All floating (high impedance) bus pins must have their

input levels fixed by means of pull-up or pull-down

resistors.

Weight

SOP20-P-300-1.27A

: 0.22g (typ.)

TSSOP20-P-0044-0.65A : 0.08 g (typ.)

VSSOP20-P-0030-0.50 : 0.03 g (typ.)

Note: The Electrical Characteristics of V =1.8±0.15V is only applicable for products which manufactured

from January 2009 onward.

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TC74LCX245F/FT/FK

Pin Assignment (top view)

IEC Logic Symbol

DIR

3EN1 (BA)

3EN2 (AB)

18 B1

17 B2

16 B3

15 B4

14 B5

13 B6

12 B7

11 B8

GND 10

Truth Table

Inputs

Function

Outputs

DIR

A-Bus

B-Bus

Input

A = B

B = A

Output

Input

Output

X: Don’t care

Z: High impedance

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TC74LCX245F/FT/FK

Absolute Maximum Ratings (Note 1)

Characteristics

Power supply voltage

DC input voltage

(DIR, OE )

Symbol

Rating

Unit

−0.5 to 7.0

−0.5 to 7.0 (Note 2)

DC bus I/O voltage

−0.5 to V

+ 0.5

I/O

(Note 3)

Input diode current

Output diode current

DC output current

Power dissipation

−50

±50

°C

(Note 4)

±50

OUT

180

DC V /ground current

±100

CC GND

Storage temperature

stg

−65 to 150

Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or

even destruction.

Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the

significant change in temperature, etc.) may cause this product to decrease in the reliability significantly

even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute

maximum ratings and the operating ranges.

Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook

(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test

report and estimated failure rate, etc).

Note 2: Output in OFF state

Note 3: High or low state. I

OUT

absolute maximum rating must be observed.

Note 4:

OUT

< GND, V

OUT

> V

Operating Ranges (Note 1)

Characteristics

Symbol

Rating

Unit

1.65 to 3.6

Power supply voltage

1.5 to 3.6 (Note 2)

Input voltage

(DIR, OE )

0 to 5.5

0 to 5.5 (Note 3)

Bus I/O voltage

Output current

I/O

0 to V

(Note 4)

(Note 5)

(Note 6)

±24

±12

OH OL

Operating temperature

Input rise and fall time

−40 to 85

°C

opr

dt/dv

0 to 10 (Note 7)

ns/V

Note 1: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus

inputs must be tied to either VCC or GND. Please connect both bus inputs and the bus outputs with VCC or

GND when the I/O of the bus terminal changes by the function. In this case, please note that the output is

not short-circuited.

Note 2: Data retention only

Note 3: Output in OFF state

Note 4: High or low state

Note 5:

Note 6:

Note 7:

= 3.0 to 3.6 V

= 2.7 to 3.0 V

= 0.8 to 2.0 V, V

= 3.0 V

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TC74LCX245F/FT/FK

Electrical Characteristics

DC Characteristics (Ta = −40 to 85°C)

Characteristics

Symbol

Test Condition

Min

Max

Unit

(V)

1.65 to 2.3

2.3 to 2.7

×0.9

⎯

H-level

⎯

1.7

2.0

⎯

2.7 to 3.6

Input voltage

1.65 to 2.3

×0.1

L-level

H-level

⎯

2.3 to 2.7

⎯

0.7

0.8

⎯

2.7 to 3.6

⎯

= −100 μA 1.65 to 3.6

−0.2

= −4 mA

= −8 mA

1.65

2.3

1.05

1.7

⎯

= V or V

IH IL

= −12 mA

2.7

2.2

⎯

= −18 mA

= −24 mA

= 100 μA

= 4 mA

3.0

2.4

2.2

⎯

Output voltage

1.65 to 3.6

1.65

0.2

0.45

0.7

⎯

= 8 mA

2.3

⎯

L-level

= V or V

IH IL

= 12 mA

2.7

⎯

0.4

= 16 mA

= 24 mA

3.0

⎯

0.4

0.55

±5.0

Input leakage current

= 0 to 5.5 V

1.65 to 3.6

μA

= V or V

IH IL

3-state output OFF state current

Power-off leakage current

Quiescent supply current

1.65 to 3.6

⎯

±5.0

= 0 to 5.5 V

OUT

IN OUT

= 5.5 V

⎯

10.0

±10.0

500

OFF

= V

or GND

1.65 to 3.6

2.7 to 3.6

μA

= 3.6 to 5.5 V

− 0.6 V

IN OUT

= V

Increase in I

per input

ΔI

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TC74LCX245F/FT/FK

AC Characteristics (Ta = −40 to 85°C)

Characteristics

Symbol

Test Condition

Min

Max

Unit

(V)

1.8 ± 0.15

2.5 ± 0.2

2.7

⎯

1.5

⎯

1.5

⎯

1.5

⎯

25.0

9.0

pLH

Propagation delay time

Figure 1, Figure 2

pHL

8.0

3.3 ± 0.3

1.8 ± 0.15

2.5 ± 0.2

2.7

7.0

34.0

17.0

9.5

pZL

Output enable time

Figure 1, Figure 3

pZH

3.3 ± 0.3

1.8 ± 0.15

2.5 ± 0.2

2.7

8.5

32.0

16.0

8.5

pLZ

Output disable time

pHZ

3.3 ± 0.3

2.7

7.5

⎯

osLH

Output to output skew

(Note)

3.3 ± 0.3

1.0

osHL

Note:

Parameter guaranteed by design.

(t = |t − t |, t = |t

− t |)

pHLn

osLH

pLHm

pLHn osHL

pHLm

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TC74LCX245F/FT/FK

Dynamic Switching Characteristics (Ta = 25°C, input: t = t = 2.5 ns, C = 50 pF, R = 500 Ω)

Characteristics

Symbol

Test Condition

Typ.

Unit

(V)

Quiet output maximum

dynamic V

= 3.3 V, V = 0 V

3.3

0.8

OLP

Quiet output minimum

OLV

= 3.3 V, V = 0 V

dynamic V

Capacitive Characteristics (Ta = 25°C)

Characteristics

Symbol

Test Condition

Typ.

Unit

(V)

Input capacitance

DIR, OE

An, Bn

= 10 MHz

3.3

I/O

Bus input capacitance

Power dissipation capacitance

(Note)

Note:

is defined as the value of the internal equivalent capacitance which is calculated from the operating

current consumption.

Average operating current can be obtained by the equation:

= C ･V ･f + I /8 (per bit)

PD CC IN CC

CC (opr)

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TC74LCX245F/FT/FK

AC Test Circuit

Open

6.0 V or V ×2

GND

Parameter

Switch

Open

Switch

, t

pLH pHL

6.0 V

@V =3.3±0.3V

Output

Measure

@V =2.7V

, t

pLZ pZL

VCC×2 @V =2.5±0.2V

@V =1.8±0.15V

, t

GND

pHZ pZH

Figure 1

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TC74LCX245F/FT/FK

AC Waveform

90%

Input

10%

(An, Bn)

GND

Output

(Bn, An)

pHL

pLH

Figure 2 t

, t

pLH pHL

90%

Output Enable

( OE )

10%

GND

pLZ

pZL

Output (An, Bn)

Low to Off to Low

V_OM

pHZ

pZH

Output (An, Bn)

High to Off to High

V_OM

GND

Outputs

enabled

Outputs

disabled

Outputs

enabled

Figure 3 t

, t

pLZ pHZ pZL pZH

Symbol

3.3 ± 0.3 V

2.7V

2.5 ± 0.2 V

1.8 ± 0.15 V

Input

Output

Load

2.7V

1.5V

tr,tf

2.5ns

1.5V

2.0ns

+0.3V

-0.3V

+0.15V

-0.15V

+0.15V

-0.15V

50pF

30pF

500Ω

30pF

1kΩ

500Ω

2010-01-31

TC74LCX245F/FT/FK

Package Dimensions

Weight: 0.22 g (typ.)

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TC74LCX245F/FT/FK

Package Dimensions

Weight: 0.08 g (typ.)

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TC74LCX245F/FT/FK

Package Dimensions

Weight: 0.03 g (typ.)

2010-01-31

TC74LCX245F/FT/FK

RESTRICTIONS ON PRODUCT USE

•

Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information

in this document, and related hardware, software and systems (collectively “Product”) without notice.

This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with

TOSHIBA’s written permission, reproduction is permissible only if reproduction is without alteration/omission.

Though TOSHIBA works continually to improve Product’s quality and reliability, Product can malfunction or fail. Customers are

responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and

systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily

injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including the

Product, or incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of

all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes

for Product and the precautions and conditions set forth in the “TOSHIBA Semiconductor Reliability Handbook” and (b) the

instructions for the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their

own product design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such

design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts,

diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating

parameters for such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS’ PRODUCT DESIGN OR

APPLICATIONS.

•

Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring

equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document.

Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or

reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious

public impact (“Unintended Use”). Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used

in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling

equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric

power, and equipment used in finance-related fields. Do not use Product for Unintended Use unless specifically permitted in this

document.

•

Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part.

Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any

applicable laws or regulations.

•

The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any

infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to

any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise.

ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE

FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY

WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR

LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND

LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO

SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS

FOR A PARTICULAR PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT.

•

Do not use or otherwise make available Product or related software or technology for any military purposes, including without

limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile

technology products (mass destruction weapons). Product and related software and technology may be controlled under the

Japanese Foreign Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product

or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations.

Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product.

Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances,

including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of

noncompliance with applicable laws and regulations.

2010-01-31

TC74LCX245F(F) [TOSHIBA]

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