84021 Data Sheet

260MHz, CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER

84021 Rev E 9/23/15

7

©2015 Integrated Device Technology, Inc

Table 4B. LVCMOS/LVTTL DC Characteristics, VDD = 3.3V±5%, VDDO = 3.3V±5%, 2.5V±5% or 1.8V±5%, TA = 0°C to 70°C

NOTE 1: Outputs terminated with 50

 to V

DDO/2. See Parameter Measurement Information section, Output Load Test Circuit diagrams.

Table 5. Input Frequency Characteristics, VDD = 3.3V±5%, VDDO = 3.3V±5%, 2.5V±5% or 1.8V±5%, TA = 0°C to 70°C

NOTE 1: For the input crystal and TEST_CLK frequency range, the M value must be set for the VCO to operate within the 620MHz to 780MHz

range. Using the minimum input frequency of 14MHz, valid values of M are 45

 M  55. Using the maximum input frequency of 40MHz, valid

values of M are 16

 M  19.

Table 6. Crystal Characteristics

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

VIH

Input High Voltage

2

VDD + 0.3

V

VIL

Input

Low Voltage

OE[0:1], N[0:1], M[0:8],

XTAL_SEL, VCO_SEL,

S_DATA, S_CLOCK,

S_LOAD, nP_LOAD, MR

-0.3

0.8

V

TEST_CLOCK

-0.3

1.3

V

IIH

Input

High Current

MR, S_CLOCK,

TEST_CLK, S_DATA,

S_LOAD, nP_LOAD,

M[0:4], M[6:8], N0, N1

VDD = VIN = 3.465V

150

µA

M5, OE0, OE1,

XTAL_SEL, VCO_SEL

VDD = VIN = 3.465V

5

µA

IIL

Input

Low Current

MR, S_CLOCK,

TEST_CLK, S_DATA,

S_LOAD, nP_LOAD,

M[0:4], M[6:8], N0, N1

VDD = 3.465V, VIN = 0V

-5

µA

M5, OE0, OE1,

XTAL_SEL, VCO_SEL

VDD = 3.465V, VIN = 0V

-150

µA

VOH

Output High Voltage; NOTE 1

VDDO = 3.3V±5%

2.6

V

VDDO = 2.5V±5%

1.8

V

VDDO = 1.8V±5%

VDDO - 0.3

V

VOL

Output Low Voltage; NOTE 1

VDDO = 3.3V±5% or 2.5V±5%

0.5

V

VDDO = 1.8V±5%

0.4

V

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

fIN

Input Frequency

TEST_CLK; NOTE 1

14

40

MHz

XTAL; NOTE 1

14

40

MHz

S_CLOCK

50

MHz

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency

14

40

MHz

Equivalent Series Resistance (ESR)

50



Shunt Capacitance (CO)

7pF