SN54AHC273, SN74AHC273

OCTAL D-TYPE FLIP-FLOPS

WITH CLEAR

SCLS376G – JUNE 1997 – REVISED JULY 2003

4

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

SN54AHC273

SN74AHC273

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

2 V

1.9

1.9

1.9

IOH = –50 mA

3 V

2.9

2.9

2.9

VOH

4.5 V

4.4

4.4

4.4

V

IOH = –4 mA

3 V

2.58

2.48

2.48

IOH = –8 mA

4.5 V

3.94

3.8

3.8

2 V

0.1

0.1

0.1

IOL = 50 mA

3 V

0.1

0.1

0.1

VOL

4.5 V

0.1

0.1

0.1

V

IOL = 4 mA

3 V

0.36

0.5

0.44

IOL = 8 mA

4.5 V

0.36

0.5

0.44

II

VI = 5.5 V or GND

0 V to 5.5 V

±0.1

±1*

±1

mA

ICC

VI = VCC or GND,

IO = 0

5.5 V

4

40

40

mA

Ci

VI = VCC or GND

5 V

2.5

10

10

pF

* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.

(unless otherwise noted) (see Figure 1)

SN54AHC273

SN74AHC273

TA = 25°C

MIN

MAX

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

t

Pulse duration

CLR low

5

6

5

6

ns

tw

Pulse duration

CLK high or low

5

6.5

5

6.5

ns

t

Setup time

Data before CLK

↑

5.5

6.5

5.5

6.5

ns

tsu

Setup time

CLR before CLK

↑

2.5

2.5

2.5

2.5

ns

th

Hold time, data after CLK

↑

1.5

2

1

1

ns

(unless otherwise noted) (see Figure 1)

SN54AHC273

SN74AHC273

TA = 25°C

MIN

MAX

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

t

Pulse duration

CLR low

5

5

5

5

ns

tw

Pulse duration

CLK high or low

5

5

5

5

ns

t

Setup time

Data before CLK

↑

4.5

4.5

4.5

4.5

ns

tsu

Setup time

CLR before CLK

↑

2

2

2

2

ns

th

Hold time, data after CLK

↑

1.5

2

1

1

ns