TOSHIBA TC74VCXH16373FT Technical data

TC74VCXH16373FT

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74VCXH16373FT

Low-Voltage 16-Bit D-Type Latch with Bushold

The TC74VCXH16373FT is a high-performance CMOS 16-bit
D-type latch. Designed for use in 1.8-V, 2.5-V or 3.3-V systems, it
achieves high-speed operation while maintaining the CMOS low
power dissipation.

This 16-bit D-type latch is controlled by a latch enable input
(LE) and an output enable input (
byte. It can be used as two 8-bit latches or one 16-bit latch. When

OE

the

the need for external pull-up resistors to hold unused or floating
data inputs at a valid logic level.

discharge.

input is high, the outputs are in a high-impedance state.

The D data inputs include active bushold circuitry, eliminating

All inputs are equipped with protection circuits against static

Features

OE

) which are common to each

Weight: 0.25g (typ.)

• Low-voltage operation: VCC = 1.8 to 3.6 V

• Bushold on data inputs eliminating the need for external pull-up/pull-down resistors

• High-speed operation : t

: tpd = 3.4 ns (max) (VCC = 2.3 to 2.7 V)
: t

• Output current : I
: IOH/IOL = ±18 mA (min) (VCC = 2.3 V)
: I

• Latch-up performance: −300 mA

• ESD performance: Machine model ≥ ±200 V

Human body model ≥ ±2000 V

• Package: TSSOP

• 3.6-V tolerant function and power-down protection control inputs and outputs

OH/IOL

OH/IOL

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

pd

= 5.7 ns (max) (VCC = 1.8 V)

pd

= ±24 mA (min) (VCC = 3.0 V)

= ±6 mA (min) (VCC = 1.8 V)

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TC74VCXH16373FT

Pin Assignment

1

OE1

1Q1

2

1Q2

3

4

GND

5

1Q3

6

1Q4

V

7

CC

1Q5

8

1Q6

9

10

GND

11

1Q7

12

1Q8

13

2Q1

(top view)

IEC Logic Symbol

1

48

24

25

47

46

44

43

41

40

38

37

36

35

33

32

30

29

27

26

1EN

C3

2EN

C4

4D 2

47

46

45

44

43

42

41

40

39

38

37

36

1LE 48

1D1

1D2

GND

1D3

1D4

V

CC

1D5

1D6

GND

1D7

1D8

2D1

OE1

1LE

OE2

2LE

1D1 3D 1

1D2

1D3

1D4

1D5

1D6

1D7

1D8

2D1

2D2

2D3

2D4

2D5

2D6

2D7

2D8

2

1Q1

3

1Q2

5

1Q3

6

1Q4

8

1Q5

9

1Q6

11

1Q7

12

1Q8

13

2Q1

14

2Q2

16

2Q3

17

2Q4

19

2Q5

20

2Q6

22

2Q7

23

2Q8

2Q2

GND

2Q3

2Q4

V

CC

2Q5

2Q6

2Q7

2Q8

OE2

14

15

16

17

18

19

20

21 GND

22

23

24

35

34

33

32

31

30

29

28

27

26

25

2D2

GND

2D3

2D4

VCC

2D5

2D6

GND

2D7

2D8

2LE

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Truth Table

OE1 1LE 1D1-1D8 1Q1-1Q8

H X X Z

L L X Qn

L H L L

L H H H

OE2 2LE 2D1-2D8 2Q1-2Q8

H X X Z

L L X Qn

L H L L

L H H H

X: Don’t care

Z: High impedance

TC74VCXH16373FT

Inputs Outputs

Inputs Outputs

Qn: Q outputs are latched at the time when the LE input is taken to a low logic level.

System Diagram

1D1

47

48

1LE

1

OE1

2D1

36

25

2LE

1D2

46 44 43 41 40 38 37

D

LE

Q

2

1Q1

2D2

35 33 32 30 29 27 26

D

LE

Q

D

LE

D

LE

Q

Q

3

1Q2

1D3

2D3

LE

LE

1D4

D

Q

5

1Q3

2D4

D

Q

LE

LE

1D5

D

Q

6

1Q4

2D5

D

Q

LE

LE

1D6

D

D

Q

Q

D

LE

8

1Q5

2D6

D

LE

Q

Q

9

1Q6

1D7

2D7

LE

LE

1D8

D

D

Q

11

Q

1Q7

2D8

D

LE

D

LE

Q

12

1Q8

Q

24

OE2

13

2Q1

14

2Q2

16

2Q3

17

2Q4

3

19

2Q5

20

2Q6

22

2Q7

23

2Q8

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Absolute Maximum Ratings (Note 1)

Characteristics Symbol Rating Unit

TC74VCXH16373FT

Power supply voltage V

DC input voltage

DC output voltage V

Input diode current I

Output diode current I

Output current I

Power dissipation P

DC VCC/ground current per supply pin ICC/I

Storage temperature T

(OE, LE) −0.5 to 4.6

(An)

CC

V

IN

OUT

IK

OK

OUT

D

stg

−0.5 to 4.6 (Note 2)

−0.5 to V

(Note 3)

±50 (Note 4) mA

GND

−0.5 to 4.6 V

−0.5 to V

+ 0.5

CC

+ 0.5

CC

−50 mA

±50 mA

400 mW

±100 mA

−65 to 150 °C

V

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: OFF state

Note 3: High or low state. I

Note 4: V

OUT

< GND, V

absolute maximum rating must be observed.

OUT

> VCC

OUT

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2007-10-19

TC74VCXH16373FT

Operating Ranges

Characteristics Symbol Rating Unit

Power supply voltage V

Input voltage

Output voltage V

Output current IOH/IOL

Operating temperature T

Input rise and fall time dt/dv 0 to 10 (Note 9) ns/V

(Note 1) (Note 2)

(OE, LE) −0.3 to 3.6

(An)

CC

V

OUT

opr

1.2 to 3.6 (Note 3)

IN

0 to 3.6 (Note 4)

0 to VCC (Note 5)

±24 (Note 6)

±18 (Note 7)

1.8 to 3.6

0 to V

−40 to 85 °C

CC

±6 (Note 8)

V

V

V

mA

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

Unused inputs must be tied to either VCC or GND.

Note 2: Floating or unused control inputs must be held high or low.

Note 3: Data retention

Note 4: OFF state

Note 5: High or low state

Note 6: V

= 3.0 to 3.6 V

CC

Note 7: VCC = 2.3 to 2.7 V

Note 8: VCC = 1.8 V

Note 9: VIN = 0.8 to 2.0 V, VCC = 3.0 V

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