TOSHIBA TC74LCX273F, TC74LCX273FT, TC74LCX273FK Technical data

TC74LCX273F/FT/FK

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74LCX273F,TC74LCX273FT,TC74LCX273FK

Low-Voltage Octal D-Type Flip-Flop with Clear with 5-V Tolerant Inputs and Outputs

The TC74LCX273 is a high-performance CMOS octal D-type
flip-flop. 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
but it could be used to interface to 5-V supply environment for
both inputs and outputs.

This 8 bit D-type flip-flop is controlled by a clock input (CK)
and a clear input (
outputs are at a low logic level.

All inputs are equipped with protection circuits against static
discharge.

CLR

). When the

CLR

input is low, the eight

applications,

CC

Features

TC74LCX273F

TC74LCX273FT

• Low-voltage operation: VCC = 1.65 to 3.6 V

• High-speed operation: t

• Output current: |I

• Latch-up performance: ＞±500 mA

• Available in JEITA SOP, TSSOP and VSSOP (US)

• Power-down protection is provided on all inputs and outputs

• Pin and function compatible with the 74 series

(74AC/VHC/HC/F/ALS/LS etc.) 273 type

Note: The Electrical Characteristics of V

from January 2009 onward.

= 8.5 ns (max) (VCC = 3.0 to 3.6 V)

pd

|/IOL = 24 mA (min) (VCC = 3.0 V)

OH

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

CC

TC74LCX273FK

Weight
SOP20-P-300-1.27A : 0.22 g (typ.)
TSSOP20-P-0044-0.65A : 0.08 g (typ.)
VSSOP20-P-0030-0.50 : 0.03 g (typ.)

2010-01-31 1

TC74LCX273F/FT/FK

Pin Assignment

(top view)

IEC Logic Symbol

CLR 1

2

Q1

3

D1

4

D2

Q2

5

Q3

6

D3

7

8

D4

9

Q4

10

GND

Truth Table

Inputs Outputs

CLR D CK Q

L X X L Clear

H L L ⎯

H H H ⎯

H X Qn No change

20

19

18

17

16

15

14

13

12

11

V

Q8

D8

D7

Q7

Q6

D6

D5

Q5

CK

CC

Function

CK

D1

D2

D3

D4

D5

D6

D7

D8

(1)

(11)

(3)

(4)

(7)

(8)

(13)

(14)

(17)

(18)

CLR R

1D

C1

(2)

Q1

(5)

Q2

(6)

Q3

(9)

Q4

(12)

Q5

(15)

Q6

(16)

Q7

(19)

Q8

X: Don’t care

System Diagram

D1 D2 D3 D4 D5 D6 D7 D8

3

R

D

CK

Q

CLR

CK

1

11

2

Q1

4

R

D

CK

7

D

Q

CK

5

Q2

8

R

Q

D

CK

6

Q3

13

R

Q

D

CK

9

Q4

14

R

Q

D

CK

12

Q5

17

R

Q

D

CK

15

Q6

18

R

Q

16

Q7

D

CK

R

Q

19

Q8

2010-01-31 2

Absolute Maximum Ratings (Note 1)

Characteristics Symbol Rating Unit

TC74LCX273F/FT/FK

Power supply voltage V

DC input voltage V

DC output voltage V

Input diode current I

Output diode current I

DC output current I

Power dissipation P

DC VCC/ground current ICC/I

Storage temperature T

CC

IN

OUT

IK

OK

OUT

D

GND

stg

−0.5 to 7.0 (Note 2)

−0.5 to V

±50 (Note 4) mA

−0.5 to 7.0 V

−0.5 to 7.0 V

+ 0.5

CC

(Note 3)

−50 mA

±50 mA

180 mW

±100 mA

−65 to 150 °C

V

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: V

Note 3: High or low state. I

Note 4: V

= 0 V

CC

OUT <

GND, V

absolute maximum rating must be observed.

OUT

> VCC

OUT

Operating Ranges (Note 1)

Characteristics Symbol Rating Unit

Power supply voltage V

Input voltage V

Output voltage V

Output current IOH/I

Operating temperature T

Input rise and fall time dt/dv 0 to 10 (Note 7) ns/V

CC

IN

OUT

opr

1.5 to 3.6 (Note 2)

0 to 5.5 (Note 3)

0 to VCC (Note 4)

±24 (Note 5)

OL

±12 (Note 6)

Note 1: The operating ranges must be maintained to ensure the normal operation of the device.

Unused inputs must be tied to either V

or GND.

CC

Note 2: Data retention only

1.65 to 3.6

0 to 5.5 V

−40 to 85 °C

V

V

mA

Note 3: VCC = 0 V

Note 4: High or low state

Note 5: VCC = 3.0 to 3.6 V

Note 6: VCC = 2.7 to 3.0 V

Note 7: VIN = 0.8 to 2.0 V, VCC = 3.0 V

2010-01-31 3

Electrical Characteristics

TC74LCX273F/FT/FK

DC Characteristics

(Ta = −40 to 85°C)

Characteristics Symbol Test Condition

H-level

VIH

Input voltage

L-level V

H-level

IL

VOH V

IN

= V

Output voltage

L-level VOL V

Input leakage current IIN V

Power-off leakage current I

VIN/V

OFF

Quiescent supply current ICC

Increase in Icc per input ΔICC V

= V

IN

= 0 to 5.5 V 1.65 to 3.6 ⎯ ±5.0 μA

IN

OUT

V

= V

IN

V

= 3.6 to 5.5 V 1.65 to 3.6 ⎯ ±10.0

IN

= V

IN

(V)

V

CC

1.65 to 2.3 V

Min Max Unit

×0.9 ⎯

CC

2.3 to 2.7 1.7 ⎯

2.7 to 3.6

1.65 to 2.3

2.0

⎯ VCC×0.1

⎯

2.3 to 2.7 ⎯ 0.7

IH

or V

2.7 to 3.6

IOH = −100 μA 1.65 to 3.6 V

IOH = −4 mA

1.65

IOH = −8 mA 2.3 1.7 ⎯

IL

IOH = −12 mA

2.7

⎯ 0.8

－0.2 ⎯

CC

1.05 ⎯

2.2 ⎯

IOH = −18 mA 3.0 2.4 ⎯

IOH = −24 mA 3.0 2.2 ⎯

IOL = 100 μA 1.65 to 3.6 ⎯ 0.2

IOL = 4 mA 1.65 ⎯ 0.45

IH

or V

IOL = 8 mA

IL

IOL = 12 mA 2.7 ⎯ 0.4

2.3

⎯ 0.7

IOL = 16 mA 3.0 ⎯ 0.4

IOL = 24 mA 3.0 ⎯ 0.55

= 5.5 V 0 ⎯ 10.0 μA

or GND 1.65 to 3.6 ⎯ 10.0

CC

− 0.6 V 2.7 to 3.6 ⎯ 500

CC

V

V

μA

2010-01-31 4