74LVC3G14DP datasheet(9/17 Pages) PHILIPS

9 / 17 page

9397 750 14543

Product data sheet

Rev. 03 — 31 January 2005

9 of 17

Philips Semiconductors

74LVC3G14

Triple inverting Schmitt trigger with 5 V tolerant input

15. Transfer characteristics

Table 11:

Test data

Supply voltage

Input

Load

VEXT

VCC

tr =tf

tPLH, tPHL

1.65 V to 1.95 V

VCC

≤ 2.0 ns

30 pF

1 k

Ω

open

2.3 V to 2.7 V

VCC

≤ 2.0 ns

30 pF

500

Ω

open

2.7 V

≤ 2.5 ns

50 pF

500

Ω

open

3.0 V to 3.6 V

2.7 V

≤ 2.5 ns

50 pF

500

Ω

open

4.5 V to 5.5 V

VCC

≤ 2.5 ns

50 pF

500

Ω

open

Table 12:

Transfer characteristics

Voltages are referenced to GND (ground = 0 V); see Figure 8 and 9.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Tamb = −40 °C to +85 °C [1]

VT+

positive-going threshold

VCC = 1.8 V

0.70

1.10

1.50

VCC = 2.3 V

1.00

1.40

1.80

VCC = 3.0 V; see Figure 10

1.30

1.76

2.20

VCC = 4.5 V

1.90

2.47

3.10

VCC = 5.5 V

2.20

2.91

3.60

VT−

negative-going threshold

VCC = 1.8 V

0.25

0.61

0.90

VCC = 2.3 V

0.40

0.80

1.15

VCC = 3.0 V; see Figure 10

0.60

1.04

1.50

VCC = 4.5 V

1.00

1.55

2.00

VCC = 5.5 V

1.20

1.86

2.30

hysteresis (VT+ − VT−)VCC = 1.8 V

0.15

0.49

1.00

VCC = 2.3 V

0.25

0.60

1.10

VCC = 3.0 V

0.40

0.73

1.20

VCC = 4.5 V

0.60

0.92

1.50

VCC = 5.5 V

0.70

1.02

1.70

Tamb = −40 °C to +125 °C

VT+

positive-going threshold

VCC = 1.8 V

0.70

1.70

VCC = 2.3 V

1.00

2.00

VCC = 3.0 V

1.30

2.40

VCC = 4.5 V

1.90

3.30

VCC = 5.5 V

2.20

3.80

VT−

negative-going threshold

VCC = 1.8 V

0.25

1.10

VCC = 2.3 V

0.40

1.35

VCC = 3.0 V

0.60

1.70

VCC = 4.5 V

1.00

2.20

VCC = 5.5 V

1.20

2.50

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