CD74FCT244, CD74FCT244AT

BiCMOS OCTAL BUFFERS/LINE DRIVERS

WITH 3-STATE OUTPUTS

SCBS722B – JULY 2000 – REVISED AUGUST 2003

3

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

MIN

MAX

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

MAX

MIN

MAX

UNIT

VIK

II = –18 mA

4.75 V

–1.2

–1.2

V

VOH

IOH = –15 mA

4.75 V

2.4

2.4

V

VOL

IOL = 64 mA

4.75 V

0.55

0.55

V

II

VI = VCC or GND

5.25 V

±0.1

±1

mA

IOZ

VO = VCC or GND

5.25 V

±0.5

±10

mA

IOS†

VI = VCC or GND,

VO = 0

5.25 V

–60

–60

mA

ICC

VI = VCC or GND,

IO = 0

5.25 V

8

80

mA

∆ICC‡

One input at 3.4 V,

Other inputs at VCC or GND

5.25 V

1.6

1.6

mA

Ci

VI = VCC or GND

10

10

pF

Co

VO = VCC or GND

15

15

pF

† Not more than one output should be tested at a time, and the duration of the test should not exceed 100 ms.

‡ This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.

switching

characteristics

over

recommended

operating

free-air

temperature

range,

VCC = 5 V ± 0.25 V (unless otherwise noted) (see Figure 1)

PARAMETER

FROM

TO

CD74FCT244

CD74FCT244AT

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

TA = 25°C

MIN

MAX

TA = 25°C

MIN

MAX

UNIT

(INPUT)

(OUTPUT)

TYP

MIN

MAX

TYP

MIN

MAX

tpd

A

Y

4.5

1.5

6.5

3.8

1.5

5.3

ns

ten

OE

Y

6

1.5

8

4.8

1.5

6.5

ns

tdis

OE

Y

5

1.5

7

4.5

1.5

5.8

ns

noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C

PARAMETER

MIN

TYP

MAX

UNIT

VOL(P)

Quiet output, maximum dynamic VOL

1

V

VOH(V)

Quiet output, minimum dynamic VOH

0.5

V

VIH(D)

High-level dynamic input voltage

2

V

VIL(D)

Low-level dynamic input voltage

0.8

V

operating characteristics, VCC = 5 V, TA = 25°C

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance

No load,

f = 1 MHz

35

pF