5.4 Electrical Characteristics

PARAMETER

TEST

CONDITIONS

(1)

VCC (V)

25°C

-40°C to 85°C

-55°C to 125°C

UNIT

MIN

TYP

MAX

MIN

MAX

MIN

MAX

HC TYPES

VIH

High-level input voltage

2

1.5

1.5

1.5

V

4.5

3.15

3.15

3.15

6

4.2

4.2

4.2

VIL

Low-level input voltage

2

0.5

0.5

0.5

V

4.5

1.35

1.35

1.35

6

1.8

1.8

1.8

VOH

High-level output voltage

CMOS loads

IOH = – 20μA

2

1.9

1.9

1.9

V

IOH = – 20μA

4.5

4.4

4.4

4.4

IOH = – 20μA

6

5.9

5.9

5.9

High-level output voltage

TTL loads

IOH = – 6mA

4.5

3.98

3.84

3.7

IOH = – 7.8mA

6

5.48

5.34

5.2

VOL

Low-level output voltage

CMOS loads

IOL = 20μA

2

0.1

0.1

0.1

V

IOL = 20μA

4.5

0.1

0.1

0.1

IOL = 20μA

6

0.1

0.1

0.1

Low-level output voltage

TTL

IOL = 6mA

4.5

0.26

0.33

0.4

IOL = 7.8mA

6

0.26

0.33

0.4

II

Input leakage current

VCC or GND

6

±0.1

±1

±1

µA

ICC

Supply Current

VCC or GND

6

8

80

160

µA

IOZ

Three-state leakage

current

VIL or VIH

6

±0.5

±0.5

±10

µA

HCT TYPES

VIH

High-level input voltage

4.5 to 5.5

2

2

2

V

VIL

Low-level input voltage

4.5 to 5.5

0.8

0.8

0.8

V

VOH

High-level output voltage

CMOS loads

IOH = – 20μA

4.5

4.4

4.4

4.4

V

High-level output voltage

TTL loads

IOH = – 6mA

4.5

3.98

3.84

3.7

VOL

Low-level output voltage

CMOS loads

IOL = 20μA

4.5

0.1

0.1

0.1

V

Low-level output voltage

TTL loads

IOL = 6mA

4.5

0.26

0.33

0.4

II

Input leakage current

VCC to GND

5.5

±0.1

±1

±1

µA

ICC

Supply current

VCC or GND

5.5

8

80

160

µA

∆ICC (2)

(3)

Additional supply current

per input pin

One of An or Bn

4.5 to 5.5

100

396

495

539

µA

One of OEA or

OEB

4.5 to 5.5

100

216

270

294

IOZ

Three-state leakage

current

VIL or VIH

5.5

±0.5

±5

±10

µA

(1)

VI = VIH or VIL, unless otherwise noted.

(2)

For dual-supply systems theoretical worst case (VI = 2.4 V, VCC = 5.5 V) specification is 1.8 mA.

(3)

Inputs held at VCC – 2.1.

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CD54HC243, CD74HC243, CD54HCT243, CD74HCT243

SCHS168E – NOVEMBER 1998 – REVISED MARCH 2022

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