Motorola MC145149P, MC145149DW Datasheet

MC145149MOTOROLA

1

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Interfaces with Dual–Modulus Prescalers

The MC145149 contains two PLL Frequency Synthesizers which share a
common serial data port and common reference oscillator. The device
contains two 14–stage R counters, two 10–stage N counters, and two
7–stage A counters. All six counters are fully programmable through a serial
port. The divide ratios are latched into the appropriate counter latch
according to the last data bits (control bits) entered.

When combined with external low–pass filters and voltage controlled
oscillators (VCOs), the MC145149 can provide all the remaining functions
for two PLL frequency synthesizers operating up to the device’s frequency
limit. For higher VCO frequency operation, a down mixer or dual–modulus
prescaler can be used between the VCO and the synthesizer IC.

• Low Power Consumption Through Use of CMOS Technology

• Wide Operating Voltage Range: 3 to 9 V

• Operating Temperature Range: – 40 to + 85°C

•÷ R Range = 3 to 16,383

•÷ N Range = 3 to 1023

•÷ A Range = 0 to 127

• Two “Linearized” Three–State Digital Phase Detectors with No Dead Zone

• Two Lock Detect Signals (LD1 and LD2)

• Two Open–Drain Port Expander Outputs (SW1 and SW2)

• Compatible with the Serial Peripheral Interface (SPI) on CMOS MCUs

Order this document

by MC145149/D

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SEMICONDUCTOR TECHNICAL DATA



P SUFFIX

PLASTIC DIP

CASE 738

DW SUFFIX

SOG PACKAGE

CASE 751D

ORDERING INFORMATION

MC145149P Plastic DIP
MC145149DW SOG Package

20

1

20

1

CLK

f

in1

ENB

MC1

LD1

LD2

MC2

S/R

out

f

in2

DATA 5

4

3

2

1

10

9

8

7

6

14

15

16

17

18

19

20

11

12

13

OSC

out

SW1

V

DD1

PD

out1

V

SS1

V

SS2

PD

out2

V

DD2

SW2

OSC

in

PIN ASSIGNMENT

 Motorola, Inc. 1995

MC145149 MOTOROLA
2

CLK

DATA

6

5

PLL2

PLL1

SW1

17

SW2

14

10

10

7

7

14

14

10

10

7

7

14

14

8

2–BIT

CONTROL

S/R

7

10–BIT S/R7–BIT S/R

÷

A COUNTER

LATCH

10–BIT ÷ N

COUNTER

7–BIT ÷ A

COUNTER

MODULUS
CONTROL 2
(MC2)

9

12

10

LOCK

DETECT

14–BIT

÷

R COUNTER

1–BIT

LATCH

1–BIT

CONTROL

S/R

REFERENCE COUNTER LATCH

CONTROL LOGIC

PHASE

DETECTOR

÷

N COUNTER

LATCH

14–BIT SHIFT REGISTER

16

15

4

ENB

3

10–BIT S/R7–BIT S/R

÷

A COUNTER

LATCH

10–BIT

÷

N

COUNTER

7–BIT ÷ A

COUNTER

MODULUS
CONTROL 1
(MC1)

2

19

1

LOCK

DETECT

14–BIT

÷

R COUNTER

1–BIT

LATCH

1–BIT

CONTROL

S/R

REFERENCE COUNTER LATCH

CONTROL LOGIC

PHASE

DETECTOR

÷

N COUNTER

LATCH

14–BIT SHIFT REGISTER

OSC

in

OSC

out

f

in1

f

in2

S/R

out

PD

out2

f

R

PIN 13

=

V

DD2

PIN 11

=

V

SS2

PD

out1

f

R

PIN 18

=

V

DD1

PIN 20

=

V

SS1

BLOCK DIAGRAM

f

V

f

V

LD2

LD1

MC145149MOTOROLA

3

MAXIMUM RATINGS* (Voltages Referenced to V

SS

)

Symbol Rating Value Unit

V

DD

DC Supply Voltage – 0.5 to + 10 V

Vin, V

out

Input or Output Voltage (DC or T ransient)
except SW1, SW2

– 0.5 to VDD + 0.5 V

V

out

Output Voltage (DC or Transient) — SW1,
SW2

– 0.5 to 15 V

Iin, I

out

Input or Output Current (DC or Transient),
per Pin

± 10 mA

IDD, I

SS

Supply Current, VDD or VSS Pins ± 30 mA

P

D

Power Dissipation, per Package† 500 mW

T

stg

Storage Temperature – 65 to + 150 °C

T

L

Lead T emperature (8–Second Soldering) 260 °C

*Maximum Ratings are those values beyond which damage to the device may occur.
†Power Dissipation Temperature Derating:

Plastic DIP: – 12 mW/°C from 65 to 85°C
SOG Package: – 7 mW/°C from 65 to 85°C

ELECTRICAL CHARACTERISTICS (Voltages Referenced to V

SS

)

V

– 40°C 25°C 85°C

Symbol Characteristic

V

DD

V

Min Max Min Max Min Max

Unit

V

DD

Power Supply Voltage Range — 3 9 3 9 3 9 V

V

OL

Output Voltage 0 Level

Vin = 0 V or V

DD

I

out

= 0 µA

3
5
9

—
—
—

0.05

0.05

0.05

—
—
—

0.05

0.05

0.05

—
—
—

0.05

0.05

0.05

V

V

OH

1 Level 3

5
9

2.95

4.95

8.95

—
—
—

2.95

4.95

8.95

—
—
—

2.95

4.95

8.95

—
—
—

V

IL

Input Voltage 0 Level

V

out

= 0.5 V or VDD – 0.5 V

(All Outputs Except OSC

out

)

3
5
9

—
—
—

0.9

1.5

2.7

—
—
—

0.9

1.5

2.7

—
—
—

0.9

1.5

2.7

V

V

IH

1 Level 3

5
9

2.1

3.5

6.3

—
—
—

2.1

3.5

6.3

—
—
—

2.1

3.5

6.3

—
—
—

I

OH

Output Current — MC1, MC2

V

out

= 2.7 V Source

V

out

= 4.6 V

V

out

= 8.5 V

3
5
9

– 0.60
– 0.90
– 1.50

—
—
—

– 0.50
– 0.75
– 1.25

—
—
—

– 0.30
– 0.50
– 0.80

—
—
—

mA

I

OL

V

out

= 0.3 V Sink

V

out

= 0.4 V

V

out

= 0.5 V

3
5
9

1.30

1.90

3.80

—
—
—

1.10

1.70

3.30

—
—
—

0.66

1.08

2.10

—
—
—

I

OL

Output Current — SW1, SW2

V

out

= 0.3 V Sink

V

out

= 0.4 V

V

out

= 0.5 V

3
5
9

0.80

1.50

3.50

—
—
—

0.48

0.90

2.10

—
—
—

0.24

0.45

1.50

—
—
—

mA

I

OH

Output Current — Other Outputs

V

out

= 2.7 V Source

V

out

= 4.6 V

V

out

= 8.5 V

3
5
9

– 0.44
– 0.64
– 1.30

—
—
—

– 0.35
– 0.51
– 1.00

—
—
—

– 0.22
– 0.36
– 0.70

—
—
—

mA

I

OL

V

out

= 0.3 V Sink

V

out

= 0.4 V

V

out

= 0.5 V

3
5
9

0.44

0.64

1.30

—
—
—

0.35

0.51

1.00

—
—
—

0.22

0.36

0.70

—
—
—

I

in

Input Current — DATA, CLK, ENB 9 — ± 0.3 — ± 0.1 — ± 1.0 µA

I

in

Input Current — fin, OSC

in

9 — ± 50 — ± 25 — ± 22 µA

(continued)

This device contains circuitry to protect
against damage due to high static voltages or
electric fields, however, it is advised that normal
precautions be taken to avoid applications of any
voltage higher than maximum rated voltages to
this high–impedance circuit. For proper opera­tion, it is recommended that Vin and V

out

be
constrained to the range VSS≤ (Vin or
V

out

) ≤ VDD except SW1 and SW2 which may

range up to 15 V.

Unused inputs must always be tied to an

appropriate logic voltage level (e.g., either V

SS

or VDD). Unused outputs should be left floating.

MC145149 MOTOROLA
4

ELECTRICAL CHARACTERISTICS (continued)

V

– 40°C 25°C 85°C

Symbol Characteristic

V

DD

V

Min Max Min Max Min Max

Unit

C

in

Input Capacitance — — 10 — 10 — 10 pF

C

out

Three–State Output Capacitance — PD

out

— — 10 — 10 — 10 pF

I

DD

Quiescent Current

Vin = 0 V or V

DD

I

out

= 0 µA

3
5
9

—
—
—

800
1200
1600

—
—
—

800
1200
1600

— 1600

2400
3200

µA

I

OZ

Three–State Leakage Current — PD

out

V

out

= 0 V or 9 V

9 — ± 0.3 — ± 0.1 — ± 3.0 µA

I

OZ

Off–State Leakage Current — SW1, SW2

V

out

= 9 V

9 — 0.3 — 0.1 — 3.0 µA

SWITCHING CHARACTERISTICS (T

A

= 25°C, CL = 50 pF)

Symbol

Characteristic

Figure

No.

V

DD
V

Min Max Unit

t

TLH

Output Rise Time, MC1 and MC2 1, 6 3

5
9

—
—
—

115

60
40

ns

t

THL

Output Fall Time, MC1 and MC2 1, 6 3

5
9

—
—
—

60
34
30

ns

t

TLH

,

t

THL

Output Rise and Fall Time, LD and S/R

out

1, 6 3

5
9

—
—
—

140

80
60

ns

t

PLH

,

t

PHL

Propagation Delay Time, fin to MC1 or MC2 2, 6 3

5
9

—
—
—

125

80
50

ns

t

su

Setup Time, DATA to CLK 3 3

5
9

30
20
18

—
—
—

ns

t

su

Setup Time, CLK to ENB 3 3

5
9

70
32
25

—
—
—

ns

t

h

Hold Time, CLK to DATA 3 3

5
9

12
12
15

—
—
—

ns

t

rec

Recovery Time, ENB to CLK 3 3

5
9

5
10
20

—
—
—

ns

tr, t

f

Input Rise and Fall Times, Any Input 4 3

5
9

—
—
—

5
2

0.5

µs

t

w

Input Pulse Width, ENB and CLK 5 3

5
9

40
35
25

—
—
—

ns