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Motorola Electronic Components Datasheet

MC6875A Datasheet

2 Phase Clock Generator

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® MOTOROLA
Specifications and Applications
Information
M6800 CLOCK GENERATOR
Intended to supply the non-overlapping t/>1 and t/>2 clock signals
required by the microprocessor, this clock generator is compatible
with 1.0, 1.5, and 2.0 MHz versions of the MC6800. Both the
oscillator and high capacitance driver elements are included along
with numerous other logic accessory functions for easy system
expansion.
Schottky technology is employed for high speed and PNP-buffered
inputs are employed for NMOS compatibility. A single +5 V power
supply, and a crystal or RC network for frequency determination
are required.
Typical MPU System with Bus Extenders
GND +5 V
c:::J 4 x fo MPU
T
MC6875
MC6875A
M6800 TWO-PHASE
CLOCK GENERATOR/DRIVER
SCHOTTKY MONOLITHIC
INTEGRATED CIRCl)IT
LSUFFIX
CERAMIC PACKAGE
CASE 620-02
ADDRESS
AND
CONTROL
BUS
DATA
BUS
PIN CONNECTIONS
X1
X2
Ext In
4 x fo
2 x fo
Memory
Ready
Bus q,2
Ground
3
4
5
6
7
B
16 VCC
i5 MPUq,1
14 Reset Output
13 MPU q,2
12 Power-On Reset
11 DMA/Ref Grant
10 DMA/Ref Req
9 Memory Clock
3·637
ORDERING INFORMATION
IDevice
Temperature Range
MC6875L I
MC6875AL I
Oto +700 C
-55 to +1250 C
I Paek..e
I Ceramic Dip
ICeramic Dip


Motorola Electronic Components Datasheet

MC6875A Datasheet

2 Phase Clock Generator

No Preview Available !

II
MC6875, MC6875A
ABSOLUTE MAXIMUM RATINGS (Unless otherwise noted TA = 250 C.l
Rating
Symbol
Value
Power Supply Voltage
Input Voltage
Operating Ambient Temperature Range
MC6875L
MC6875AL
VCC
VI
TA
+7.0
+5.5
oto +70
·55 to +125
Unit
Vdc
Vdc
°c
Storage Temperature Range
Tstg -65 to +150 °c
Operating Junction Temperature
TJ 175 °c
RECOMMENDED OPERATING CONDITIONS
Rating
Power Supply VO,ltage
Operating Ambient Temperature Range
OPERATING DYNAMIC POWER SUPPLY CURRENT
Characteristic
Power Supply Currents
(VCC =5.25 V, fosc =8.0 MHz, VIL =0 V, VIH = 3.0 V)
Normal Operation
(Memory Ready and DMA/Refresh Request Inputs at
High Logic State)
Memory Ready Stretch Operation
(Memory Ready Input at Low Logic State;
DMA/Refresh Request Input at High Logic State)
DMA/Refresh Request Stretch Operation
(Memory Ready Input at High Logic State;
DMA/Refresh Request Input at Low Logic State)
Symbol
ICCN
ICCMR
ICCDR
NOTE:
Operation of the MC6875AL over the full military
temperature range (to maximum TA) will result in
excessive operating junction temperature.
The use of a clip on 16 pin heat sink similar to AAVID
Engineering, Inc., Model 5007 (RoCA = 18°CIW) is
recommended above TA = 95°C.
Contact AAVID Engineering, Inc.
30 Cook Court
Laconia, New Hampshire 03246
Tel. (603) 524-4443
Min Typ Max Unit
- - 150 mA
- - 135 mA
- - 135 mA
3·638


Part Number MC6875A
Description 2 Phase Clock Generator
Maker Motorola
Total Page 13 Pages
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