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SN74HCS27

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SCLS794A – FEBRUARY 2020 – REVISED JUNE 2020

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6.5 Electrical Characteristics

over operating free-air temperature range; typical ratings measured at TA = 25°C (unless otherwise noted).

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX UNIT

VT+

Positive switching threshold

2 V

0.7

1.5

V

4.5 V

1.7

3.15

6 V

2.1

4.2

VT-

Negative switching threshold

2 V

0.3

1.0

V

4.5 V

0.9

2.2

6 V

1.2

3.0

ΔVT

Hysteresis (VT+ - VT-)

2 V

0.2

1.0

V

4.5 V

0.4

1.4

6 V

0.6

1.6

VOH

High-level output voltage

VI = VIH or VIL

IOH = -20 µA

2 V to 6 V

VCC – 0.1

VCC – 0.002

V

IOH = -6 mA

4.5 V

4

4.3

IOH = -7.8 mA

6 V

5.4

5.75

VOL

Low-level output voltage

VI = VIH or VIL

IOL = 20 µA

2 V to 6 V

0.002

0.1

V

IOL = 6 mA

4.5 V

0.18

0.30

IOL = 7.8 mA

6 V

0.22

0.33

II

Input leakage current

VI = VCC or 0

6 V

±100

±1000

nA

ICC

Supply current

VI = VCC or 0, IO = 0

6 V

0.1

2

µA

Ci

Input capacitance

2 V to 6 V

5

pF

Cpd

Power dissipation capacitance

per gate

No load

2 V to 6 V

10

pF

6.6 Switching Characteristics

over operating free-air temperature range; typical ratings measured at TA = 25°C (unless otherwise noted). See the

Parameter Measurement Information.

PARAMETER

FROM (INPUT)

TO (OUTPUT)

VCC

MIN

TYP

MAX

UNIT

tpd

Propagation delay

A or B or C

Y

2 V

15

32

ns

4.5 V

7

15

6 V

6

12

tt

Transition-time

Y

2 V

9

17

ns

4.5 V

5

8

6 V

4

7