MC100H646 datasheet(2/6 Pages) ONSEMI

Il numero della parte	MC100H646

Spiegazioni elettronici	PENTIUM MICROPROCESSOR PECL/TTL-TTL CLOCK DRIVER

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MOTOROLA

TIMING SOLUTIONS

BR1333 — Rev 6

2

0

100

200

300

400

500

600

700

0

20

40

60

80

100

120

PDynamic = CL ƒ VSwing VCC

PTotal = PStatic + PDynamic

Q3

OGND

Q2

OVT

Q1

OGND

Q0

1

EN

IVT

IGND

VCCE

VBB

ECLK

56

789

10

11

25

24

23

22

21

20

19

26

27

28

2

3

4

18

17

16

15

14

13

12

Pinout: 28–Lead PLCC

(Top View)

OGND

OVT

IGND

IVT

VEE

VCCE

ECLK, ECLK

VBB

Q0–Q7

EN

TTL Output Ground (0V)

TTL Output VCC (+5.0V)

Internal TTL GND (0V)

Internal TTL VCC (+5.0V)

ECL VEE (0V)

ECL Ground (5.0V)

Differential Signal Input

(PECL)

VBB Reference Output

Signal Outputs (TTL)

Tri–State Enable Input (TTL)

FUNCTION

PIN NAMES

Figure 1. Output Structure

INTERNAL TTL GROUND

IGND01

OGND0

Q0A

OVT01

IVT01

INTERNAL TTL POWER

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

TCLK

ECLK

EN

LOGIC DIAGRAM

Figure 2. Power versus Frequency (Typical)

FREQUENCY, MHz

Power versus Frequency per Bit

300pF

200pF

100pF

50pF

No Load

TRUTH TABLE

TCLK

ECLK

EN

Q

GND

H

L

X

L

H

GND

X

H

L

GND

X

H

L

H

L

Z

L = Low Voltage Level; H = High Voltage Level; Z = Tristate

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