ML12054A
2.0 GHz Super Low Power
Dual Modulus Prescaler
MECL PLL COMPONENTS ÷64/65, ÷128/129
SEMICONDUCTOR TECHNICAL DATA
Legacy Device:
Motorola MC12054A
The ML12054A is a super low power dual modulus
prescaler used in phase-locked loop applications with low
power dissipation of 5.4 mW at a minimum supply voltage
of 2.7 V
.
The ML12054A can be used with CMOS synthesizers
requiring positive edges to trigger internal counters such as
Motorola's MC145xxx or Lansdale’s ML145xxx series in a
PLL to provide tuning signals up to 2.0 GHz in programma-
ble frequency steps.
A Divide Ratio Control (SW) permits selection of a 64/65
or 128/129 divide ratio as desired.
The Modulus Control (MC) selects the proper divide num-
ber after SW has been biased to select the desired divide
ratio.
• 2.0 GHz Toggle Frequency
• The ML12054A is Pin and Functionally Compatible
with the Motorola MC12031
• Low Supply Current 2.0 mA Typical
• 2.6mA Maximum, VCC = 2.7 to 5.5 Vdc
• Short Setup Time (Tset) 10ns Maximum @ 2.0 GHz
• Modulus Control Input Level is Compatible with
Standard CMOS and TTL
• Maximum Input Voltage Should Be Limited to 6.5 Vdc
• Operating Temperature Range TA = –40 to 85°C
FUNCTIONAL TABLE
SW
H
H
L
L
MC
H
L
H
L
Divide Ratio
64
65
128
129
8
1
SO 8 = -5P
PLASTIC PACKAGE
CASE 751
(SO–8)
CROSS REFERENCE/ORDERING INFORMATION
MOTOROLA
LANSDALE
PACKAGE
SO 8
MC12054AD
ML12054A-5P
Note:
Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from
ML
to
MLE.
PIN CONNECTIONS
IN
VCC
SW
OUT
1
2
3
4
8
7
6
5
IN
NC
MC
Gnd
(Top View)
NOTES:
1. SW: H = VCC, L = Open. A logic L can also be applied by grounding this pin,
but this is not recommended due to increased power consumption.
2. MC: H = 2.0 V to VCC, L = GND to 0.8 V.
MAXIMUM RATINGS
Characteristic
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Modulus Control Input, Pin 6
Symbol
VCC
TA
Tstg
MC
Range
–0.5 to 7.0
–40 to 85
–65 to 150
–0.5 to 6.5
Unit
Vdc
°C
°C
Vdc
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