TC74LCX245FT(EL) datasheet, PDF

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TC74LCX245FT(EL): DescriptionIC IC,BUS TRANSCEIVER,SINGLE,8-BIT,LCX/LVC-CMOS,TSSOP,20PIN,PLASTIC, Bus Driver/Transceiver; Categorylogic logic; File Size241KB，12 Pages; ManufacturerToshiba Semiconductor; Websitehttp://toshiba-semicon-storage.com/; Environmental Compliance

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TC74LCX245FT(EL) Overview

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

TC74LCX245FT(EL) Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Toshiba Semiconductor
Parts packaging code	TSSOP
package instruction	TSSOP, TSSOP20,.25
Contacts	20
Reach Compliance Code	unknown
Factory Lead Time	11 weeks
Control type	COMMON CONTROL
Counting direction	BIDIRECTIONAL
series	LVC/LCX/Z
JESD-30 code	R-PDSO-G20
length	6.5 mm
Logic integrated circuit type	BUS TRANSCEIVER
MaximumI(ol)	0.024 A
Number of digits	8
Number of functions	1
Number of ports	2
Number of terminals	20
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output characteristics	3-STATE
Output polarity	TRUE
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP20,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
method of packing	TAPE AND REEL
power supply	3.3 V
Prop。Delay @ Nom-Sup	7 ns
propagation delay (tpd)	25 ns
Certification status	Not Qualified
Maximum seat height	1.2 mm
Maximum supply voltage (Vsup)	3.6 V
Minimum supply voltage (Vsup)	1.65 V
Nominal supply voltage (Vsup)	3.3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
translate	N/A
width	4.4 mm

TC74LCX245FT(EL) Preview

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) V

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 (

) 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

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)

Latch-up performance:

＞±500

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

TSSOP20-P-0044-0.65A

VSSOP20-P-0030-0.50

: 0.22g (typ.)

: 0.08 g (typ.)

: 0.03 g (typ.)

TC74LCX245FK

Note: The Electrical Characteristics of V

=1.8±0.15V is only applicable for products which manufactured

from January 2009 onward.

Start of commercial production

1994-03

2014-03-01

TC74LCX245F/FT/FK

Pin Assignment

(top view)

IEC Logic Symbol

DIR

3EN1 (BA)

3EN2 (AB)

DIR

GND 10

Truth Table

Inputs

DIR

Outputs

Function

A-Bus

Output

Input

B-Bus

Input

Output

X: Don’t care

Z: High impedance

2014-03-01

TC74LCX245F/FT/FK

Absolute Maximum Ratings (Note 1)

Characteristics

Power supply voltage

DC input voltage

(DIR,

)

DC bus I/O voltage

Input diode current

Output diode current

DC output current

Power dissipation

DC V

/ground current

Storage temperature

Symbol

Rating

−

0.5 to 7.0

−

0.5 to 7.0

−

0.5 to 7.0 (Note 2)

Unit

I/O

OUT

GND

stg

−

0.5 to V

0.5

(Note 3)

−

(Note 4)

°C

180

100

−

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: V

OUT

GND, V

OUT

Operating Ranges

(Note 1)

Characteristics

Power supply voltage

Input voltage

(DIR,

)

Bus I/O voltage

Output current

Operating temperature

Input rise and fall time

Symbol

I/O

opr

dt/dv

Rating

1.65 to 3.6

1.5 to 3.6 (Note 2)

0 to 5.5

0 to 5.5 (Note 3)

0 to V

(Note 4)

−

40 to 85

Unit

°C

(Note 7)

ns/V

(Note 5)

(Note 6)

0 to 10

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 V

or GND. Please connect both bus inputs and the bus outputs with V

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: V

3.0 to 3.6 V

Note 6: V

2.7 to 3.0 V

Note 7: V

0.8 to 2.0 V, V

3.0 V

2014-03-01

TC74LCX245F/FT/FK

Electrical Characteristics

DC Characteristics

(Ta

= −40

to 85°C)

Characteristics

Symbol

Test Condition

(V)

1.65 to 2.3

H-level

Input voltage

L-level

⎯

Min

0.9

1.7

2.0

⎯

Max

⎯

Unit

⎯

2.3 to 2.7

2.7 to 3.6

1.65 to 2.3

2.3 to 2.7

2.7 to 3.6

= −

100

= −4

1.65 to 3.6

1.65

2.3

2.7

3.0

1.65 to 3.6

1.65

2.3

2.7

3.0

1.65 to 3.6

2.7 to 3.6

0.1

0.7

0.8

⎯

−

0.2

1.05

1.7

2.2

2.4

2.2

⎯

H-level

or V

= −

8 mA

= −

12 mA

= −

18 mA

Output voltage

= −

24 mA

100

4 mA

L-level

or V

8 mA

12 mA

16 mA

24 mA

0.2

0.45

0.7

0.4

0.55

5.0

Input leakage current

3-state output OFF state current

Power-off leakage current

Quiescent supply current

Increase in I

per input

OFF

0 to 5.5 V

or V

OUT

0 to 5.5 V

OUT

5.5 V

or GND

OUT

3.6 to 5.5 V

−

0.6 V

10.0

500

2014-03-01

TC74LCX245F/FT/FK

AC Characteristics

(Ta

= −40

to 85°C)

Characteristics

Symbol

Test Condition

(V)

1.8

0.15

Propagation delay time

pLH

pHL

Figure 1, Figure 2

2.5

0.2

2.7

3.3

0.3

1.8

0.15

Output enable time

pZL

pZH

Figure 1, Figure 3

2.5

0.2

2.7

3.3

0.3

1.8

0.15

Output disable time

pLZ

pHZ

Figure 1, Figure 3

2.5

0.2

2.7

3.3

0.3

Output to output skew

osLH

osHL

(Note)

2.7

3.3

0.3

Min

⎯

Max

25.0

9.0

8.0

7.0

34.0

17.0

9.5

8.5

32.0

16.0

8.5

7.5

⎯

Unit

1.5

⎯

1.5

⎯

1.5

⎯

1.0

Note:

Parameter guaranteed by design.

osLH

pLHm

−

pLHn

|, t

osHL

pHLm

−

pHLn

2014-03-01

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