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MC12028AMOTN/a200avaiMECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER
MC12028AMOTOROLAN/a1500avaiMECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER
MC12028AMOTON/a20avaiMECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER
MC12028ADMOTN/a50avaiMECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER
MC12028APMOTN/a26avaiMECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER


MC12028A ,MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALERELECTRICAL CHARACTERISTICS (V = 4.5 to 5.5V; T = –40 to 85°C, unless otherwise noted.)CC ACharacter ..
MC12028A ,MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALEROrder this document by MC12028A/D* * * The MC12028A can be used with CMOS synthesizers requiring p ..
MC12028A ,MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALERMAXIMUM RATINGS4 5 GndOUTCharacteristic Symbol Range Unit(Top View)Power Supply Voltage, Pin 2 V –0 ..
MC12028AD ,MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALERMAXIMUM RATINGS4 5 GndOUTCharacteristic Symbol Range Unit(Top View)Power Supply Voltage, Pin 2 V –0 ..
MC12028AP ,MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALEROrder this document by MC12028A/D* * * The MC12028A can be used with CMOS synthesizers requiring p ..
MC12034AD ,MECL PLL COMPONENTS ?2/33, ?4/65 DUAL MODULUS PRESCALEROrder this document by MC12034A/D* * * The MC12034A can be used with CMOS synthesizers requiring po ..
MC54F00J ,QUAD 2-INPUT NAND GATE FAST SCHOTTKY TTL
MC54F04J ,HEX INVERTER FAST SCHOTTKY TTL
MC54F08J ,QUAD 2-INPUT AND GATE FAST SCHOTTKY TTL
MC54F138J ,1-of-8 decoder/demultiplexerLOGIC DIAGRAMMC54FXXXJ CeramicE E EA A A2 1 0 1 2 3MC74FXXXN PlasticV = PIN 16CC3 2 1 MC74FXXXD SOI ..
MC54F14J ,SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS FAST SCHOTTKY TTL
MC54F153J ,DUAL 4-INPUT MULTIPLEXERLOGIC DIAGRAMN SUFFIXE I I I I S S I I I I E PLASTICa 0a 1a 2a 3a 1 0 0b 1b 2b 3b bCASE 648-081 3 2 ..


MC12028A-MC12028AD-MC12028AP
MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER
-The MC12028A can be used with CMOS synthesizers requiring positive
edges to trigger internal counters such as Motorola’s MC145XXX series in a
PLL to provide tuning signals up to 1.1 GHz in programmable frequency
steps.
The MC12028B can be used with CMOS synthesizers requiring negative
edges to trigger internal counters.
A Divide Ratio Control (SW) permits selection of a 32/33 or 64/65 divide
ratio as desired.
The Modulus Control (MC) selects the proper divide number after SW has
been biased to select the desired divide ratio.
NOTE: The “B” Version Is Not Recommended for New Designs
1.1 GHz Toggle Frequency MC12028A for Positive Edge Triggered Synthesizers 6.5 mA Maximum, –40 to 85°C, VCC = 5.5 Vdc Modulus Control Input Level Is Compatible With
Standard CMOS and TTL Low–Power 4.0 mA Typical
FUNCTIONAL TABLE
NOTES:
1.SW: H = VCC, L = Open. A logic L can also be applied by grouunding this pin,
but this is not recommended due to increased power soncumption.
2.MC: H = 2.0 V to VCC, L = GND to 0.8 V.
DESIGN GUIDE
NOTE:
* Equivalent to a two–input NAND gate
MAXIMUM RATINGS
NOTE:
ESD data available upon request.
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