HEF4534BP datasheet(8/10 Pages) PHILIPS

Part #	HEF4534BP

Description	Real time 5-decade counter

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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8 / 10 page

January 1995

8

Philips Semiconductors

Product speciﬁcation

Real time 5-decade counter

HEF4534B

LSI

AC CHARACTERISTICS

VSS = 0 V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns

Output transition times

5

60

120

ns

10 ns

+ (1,0 ns/pF) CL

HIGH to LOW

10

tTHL

30

60

ns

9 ns

+ (0,42 ns/pF) CL

15

20

40

ns

6 ns

+ (0,28 ns/pF) CL

5

60

120

ns

10 ns

+ (1,0 ns/pF) CL

LOW to HIGH

10

tTLH

30

60

ns

9 ns

+ (0,42 ns/pF) CL

15

20

40

ns

6 ns

+ (0,28 ns/pF) CL

VDD

V

SYMBOL

MIN.

TYP.

MAX.

3-state propagation delays

Output disable times

EO

→ On;

5

30

60

ns

EOS

→ OSn

10

tPHZ

25

50

ns

HIGH

15

20

40

ns

540

80

ns

LOW

10

tPLZ

25

50

ns

15

20

40

ns

Output enable times

EO

→ On;

5

35

70

ns

EOS

→ OSn

10

tPZH

20

40

ns

HIGH

15

30

ns

5

50

100

ns

LOW

10

tPZL

25

50

ns

15

30

ns

Minimum clock pulse

5

70

35

ns

width; CPA, CPS

10

tWCPH

40

20

ns

HIGH

15

30

15

ns

Minimum reset pulse

5

90

45

ns

width; MR, MRsc

10

tWMRH

60

30

ns

HIGH

15

40

20

ns

Recovery time

5

120

60

ns

for MR

10

tRMR

60

30

ns

15

50

25

ns

Recovery time

5

60

30

ns

for MRsc

10

tRMR

40

20

ns

15

30

15

ns

VDD

V

SYMBOL

MIN.

TYP.

MAX.

TYPICAL EXTRAPOLATION

FORMULA

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