SEMICONDUCTOR TECHNICAL DATA
P SUFFIX
PLASTIC DIP
CASE 738
Interfaces with Dual–Modulus Prescalers
20
1
The MC145156–2 is programmed by a clocked, serial input, 19–bit data
stream. The device features consist of a reference oscillator, selectable–refer-
ence divider, digital–phase detector, 10–bit programmable divide–by–N
counter, 7–bit programmable divide–by–A counter, and the necessary shift
register and latch circuitry for accepting serial input data.
The MC145156–2 is an improved–performance drop–in replacement for the
MC145156–1. Power consumption has decreased and ESD and latch–up
performance have improved.
DW SUFFIX
SOG PACKAGE
CASE 751D
20
1
ORDERING INFORMATION
MC145156P2
MC145156DW2 SOG Package
Plastic DIP
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Operating Temperature Range: – 40 to 85°C
Low Power Consumption Through Use of CMOS Technology
3.0 to 9.0 V Supply Range
On– or Off–Chip Reference Oscillator Operation with Buffered Output
Compatible with the Serial Peripheral Interface (SPI) on CMOS MCUs
Lock Detect Signal
PIN ASSIGNMENT
RA1
RA2
1
2
20
19
RA0
Two Open–Drain Switch Outputs
Dual Modulus/Serial Programming
OSC
in
φ
3
4
18
17
OSC
V
out
8 User–Selectable ÷ R Values: 8, 64, 128, 256, 640, 1000, 1024, 2048
÷ N Range = 3 to 1023, ÷ A Range = 0 to 127
“Linearized” Digital Phase Detector Enhances Transfer Function Linearity
Two Error Signal Options: Single–Ended (Three–State) or Double–Ended
Chip Complexity: 6504 FETs or 1626 Equivalent Gates
φ
REF
R
out
V
5
6
16
15
TEST
DD
PD
V
SW2
SW1
ENB
DATA
CLK
out
SS
7
14
13
12
11
MC
LD
8
9
f
10
in
REV 1
8/95
Motorola, Inc. 1995
MOTOROLA
MC145151–2 through MC145158–2
13
MOTOROLA [ MOTOROLA ]
