CDC305

OCTAL DIVIDE-BY-2 CIRCUIT/CLOCK DRIVER

SCAS326A – JUNE 1990 – REVISED NOVEMBER 1995

3

POST OFFICE BOX 655303

recommended operating conditions

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IOH

High-level output current

–24

mA

IOL

Low-level output current

48

mA

TA

Operating free-air temperature

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = – 18 mA

– 1.2

V

VOH

VCC = 4.5 V to 5.5 V,

IOH = – 2 mA

VCC –2

V

VOH

VCC = 4.5 V,

IOH = – 24 mA

2

2.8

V

VOL

VCC = 4.5 V,

IOL = 48 mA

0.3

0.5

V

II

VCC = 5.5 V,

VI = 7 V

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

µA

IIL

VCC = 5.5 V,

VI = 0.4 V

– 0.5

mA

IO‡

VCC = 5.5 V,

VO = 2.25 V

–50

– 150

mA

ICC

VCC = 5.5 V,

See Note 2

40

70

mA

† All typical values are at VCC = 5 V, TA = 25°C.

‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

NOTE 2: ICC is measured with CLK and PRE grounded, then with CLK and CLR grounded.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature

MIN

MAX

UNIT

fclock

Clock frequency

0

80

MHz

CLR or PRE low

5

tw

Pulse duration

CLK high

4

ns

CLK low

6

tsu

Setup time before CLK

↑

CLR or PRE inactive

6

ns