ICS83905 데이터 시트보기 (PDF) - Integrated Circuit Systems

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ICS83905

LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-LVCMOS / LVTTL FANOUT BUFFER

Integrated Circuit Systems 

Integrated

Circuit

Systems, Inc.

PRELIMINARY

ICS83905

LOW SKEW, 1:6 CRYSTAL INTERFACE-TO-

LVCMOS / LVTTL FANOUT BUFFER

TABLE 1. PIN DESCRIPTIONS

Name

XTAL_OUT

XTAL_IN

ENABLE 1, ENABLE2

BCLK0, BCLK1, BCLK2,

BCLK3, BCLK4, BCLK5

GND

VDD

VDDO

n/c

Type

Output

Input

Input

Output

Power

Power

Power

Unused

Description

Crystal oscillator interface. XTAL_OUT is the output.

Crystal oscillator interface. XTAL_IN is the input.

Output enable. LVCMOS / LVTTL interface levels.

Clock outputs. LVCMOS / LVTTL interface levels.

Power supply ground.

Core supply pin.

Output supply pin.

No connect.

TABLE 2. PIN CHARACTERISTICS

Symbol

CIN

Parameter

Input Capacitance

CPD

Power Dissipation Capacitance

(per output)

ROUT

Output Impedance

Test Conditions

VDDO = 3.465V

VDDO = 2.625V

VDDO = 2V

VDDO = 3.3V ± 5%

VDDO = 2.5V ± 5%

VDDO = 1.8V ± 0.2V

Minimum

5

Typical

4

7

7

10

Maximum

19

18

16

12

Units

pF

pF

pF

pF

Ω

Ω

Ω

TABLE 3. OUTPUT ENABLE AND CLOCK ENABLE FUNCTION TABLE

Control Inputs

ENABLE 1 ENABLE 2

0

0

0

1

1

0

1

1

Outputs

BCLK0:BCLK4

BCLK5

LOW

LOW

LOW

Toggling

Toggling

LOW

Toggling

Toggling

83905AM

http://www.icst.com/products/hiperclocks.html

2

REV. A JANUARY 20, 2005

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