CD54HC646, CD74HCT646

OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCHS278B – APRIL 2003 – REVISED APRIL 2003

6

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics for CD54HC646 over recommended operating free-air temperature range

(unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

TA = –55°C

TO 125

°C

TA = –40°C

TO 85

°C

UNIT

CC

MIN

MAX

MIN

MAX

MIN

MAX

2 V

1.9

1.9

1.9

IOH = –20 µA

4.5 V

4.4

4.4

4.4

VOH

VI = VIH or VIL

6 V

5.9

5.9

5.9

V

IOH = –6 mA

4.5 V

3.98

3.7

3.84

IOH = –7.8 mA

6 V

5.48

5.2

5.34

2 V

0.1

0.1

0.1

IOL = 20 µA

4.5 V

0.1

0.1

0.1

VOL

VI = VIH or VIL

6 V

0.1

0.1

0.1

V

IOL = 6 mA

4.5 V

0.26

0.4

0.33

IOL = 7.8 mA

6 V

0.26

0.4

0.33

II

VI = VCC or 0

6 V

±0.1

±1

±1

µA

IOZ

VO = VCC or 0

6 V

±0.5

±10

±5

µA

ICC

VI = VCC or 0,

IO = 0

6 V

8

160

80

µA

Ci

10

10

10

pF

Co

20

20

20

pF

electrical characteristics for CD74HCT646 over recommended operating free-air temperature

range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

TA = –55°C

TO 125

°C

TA = –40°C

TO 85

°C

UNIT

CC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

VOH

VI =VIH or VIL

IOH = –20 µA

45 V

4.4

4.4

4.4

V

VOH

VI = VIH or VIL

IOH = –6 mA

4.5 V

3.98

3.7

3.84

V

VOL

VI =VIH or VIL

IOL = 20 µA

45 V

0.1

0.1

0.1

V

VOL

VI = VIH or VIL

IOL = 6 mA

4.5 V

0.26

0.4

0.33

V

II

VI = VCC to GND

5.5 V

±0.1

±1

±1

µA

IOZ

VO = VCC or 0

5.5 V

±0.5

±10

±5

µA

ICC

VI = VCC or 0,

IO = 0

5.5 V

8

160

80

µA

∆ICC†

One input at VCC – 2.1 V,

Other inputs at 0 or VCC

4.5 V to 5.5 V

100

360

490

450

µA

Ci

10

10

10

pF

Co

20

20

20

pF

† Additional quiescent supply current per input pin, TTL inputs high, 1 unit load