74LVCH1T45GM datasheet(9/30 Pages) NXP

Teilenummer	74LVCH1T45GM

Bauteilbeschribung	Dual supply translating transceiver; 3-state

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74LVC_LVCH1T45_2

Product data sheet

Rev. 02 — 19 January 2010

9 of 30

NXP Semiconductors

74LVC1T45; 74LVCH1T45

Dual supply translating transceiver; 3-state

11. Dynamic characteristics

[1]

tPZH and tPZL are calculated values using the formula shown in Section 14.4 “Enable times”

[1]

tPZH and tPZL are calculated values using the formula shown in Section 14.4 “Enable times”

Table 9.

Typical dynamic characteristics at VCC(A) = 1.2 V and Tamb = 25 °C

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 8; for waveforms see Figure 6 and Figure 7

Symbol Parameter

Conditions

VCC(B)

Unit

1.2 V

1.5 V

1.8 V

2.5 V

3.3 V

5.0 V

tPLH

LOW to HIGH

propagation delay

A to B

10.6

8.1

7.0

5.8

5.3

5.1

ns

B to A

10.6

9.5

9.0

8.5

8.3

8.2

ns

tPHL

HIGH to LOW

propagation delay

A to B

10.1

7.1

6.0

5.3

5.2

5.4

ns

B to A

10.1

8.6

8.1

7.8

7.6

ns

tPHZ

HIGH to OFF-state

propagation delay

DIR to A

9.4

ns

DIR to B

12.0

9.4

9.0

7.8

8.4

7.9

ns

tPLZ

LOW to OFF-state

propagation delay

DIR to A

7.1

ns

DIR to B

9.5

7.8

7.7

6.9

7.6

7.0

ns

tPZH

OFF-state to HIGH

propagation delay

DIR to A

[1]

20.1

17.3

16.7

15.4

15.9

15.2

ns

DIR to B

[1]

17.7

15.2

14.1

12.9

12.4

12.2

ns

tPZL

OFF-state to LOW

propagation delay

DIR to A

[1]

22.1

18.0

17.1

15.6

16.0

15.5

ns

DIR to B

[1]

19.5

16.5

15.4

14.7

14.6

14.8

ns

Table 10.

Typical dynamic characteristics at VCC(B) = 1.2 V and Tamb = 25 °C

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 8; for waveforms see Figure 6 and Figure 7

Symbol Parameter

Conditions

VCC(A)

Unit

1.2 V

1.5 V

1.8 V

2.5 V

3.3 V

5.0 V

tPLH

LOW to HIGH

propagation delay

A to B

10.6

9.5

9.0

8.5

8.3

8.2

ns

B to A

10.6

8.1

7.0

5.8

5.3

5.1

ns

tPHL

HIGH to LOW

propagation delay

A to B

10.1

8.6

8.1

7.8

7.6

ns

B to A

10.1

7.1

6.0

5.3

5.2

5.4

ns

tPHZ

HIGH to OFF-state

propagation delay

DIR to A

9.4

6.5

5.7

4.1

3.0

ns

DIR to B

12.0

6.1

5.4

4.6

4.3

4.0

ns

tPLZ

LOW to OFF-state

propagation delay

DIR to A

7.1

4.9

4.5

3.2

3.4

2.5

ns

DIR to B

9.5

7.3

6.6

5.9

5.7

5.6

ns

tPZH

OFF-state to HIGH

propagation delay

DIR to A

[1]

20.1

15.4

13.6

11.7

11.0

10.7

ns

DIR to B

[1]

17.7

14.4

13.5

11.7

10.7

ns

tPZL

OFF-state to LOW

propagation delay

DIR to A

[1]

22.1

13.2

11.4

9.9

9.5

9.4

ns

DIR to B

[1]

19.5

15.1

13.8

11.9

11.7

10.6

ns

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