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RDD104 Datasheet(Fiches technique) 1 Page - LSI Computer Systems

Numéro de pièce RDD104
Description  SELECTABLE 4 DECADE CMOS DIVIDER
Télécharger  2 Pages
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Fabricant  LSI [LSI Computer Systems]
Site Internet  http://www.lsicsi.com
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SELECTABLE 4 DECADE CMOS DIVIDER
FEATURES:
• Selectable Divide by 10 or 100 or 1,000 or 10,000
• Clock Input Shaping Network Accepts Fast or Slow
Edge Inputs
• Active Oscillator Network for External Crystal
• Square Wave Output
• Output TTL Compatible at +4.5 Volt Operation
• High Noise Immunity
• Reset
• All Inputs Protected
• +4.5V to +15V Operation (VDD-VSS)
• Low Power Dissipaton
• RDD104 (DIP); RDD104-S (SOIC) - See Figure 1
DC ELECTRICAL CHARACTERISTICS:
(All voltages referenced to Vss)
VDD
-40°C
+25°C
+85°C
UNIT
Quiescent Device Current
4.5V
10
10
300
uA Max
10V
20
20
600
uA Max
Output Voltage, Low Level
4.5V
0.01
0.01
0.05
V Min
10V
0.01
0.01
0.05
V Min
High Level
4.5V
4.49
4.49
4.45
V Max
10V
9.99
9.99
9.95
V Max
Input Noise Immunity
4.5V
1.3
1.3
1.3
V Min
(Low and High)
10V
3.0
3.0
3.0
V Min
Output Drive Current:
N-Channel Sink Current
4.5V
2.3
1.9
1.6
mA Min
(VOUT = Vss + 0.4V)
10V
5.0
4.0
3.5
mA Min
P-Channel Source Current
4.5V
1.1
0.95
0.8
mA Min
(VOUT = VDD - 1V)
10V
2.5
2.1
1.8
mA Min
Input Capacitance (any input)
5.0
pF Max
DESCRIPTION OF OPERATION:
The RDD104 is a monolithic CMOS four decade
divider circuit that advances on each negative
transition of the input clock pulse. When the reset
input is high the circuit is cleared to zero. The
clock input is applied to a three stage inverting
amplifier network whose output is brought out so
that an external crystal network can be used to
form an oscillator circuit. If the clock output is not
used,the amplifier acts as an input buffer. Two
select inputs are provided which enables the circuit
to divide by 10, 100, 1,000 or 10,000.
The Output Division is selected according to the
following truth table:
DIVIDER SELECT INPUTS:
OUTPUT
SELECT 2
SELECT 1
DIVISION
0
0
10,000
0
1
1,000
1
0
100
1
1
10
MAXIMUM RATINGS:
PARAMETER
SYMBOL
VALUE
UNIT
Storage Temperature
TSTG
-65 to +150
°C
Operating Temperature
TA
-40 to +85
°C
DC Supply Voltage
(VDD - VSS)
+18
V
Voltage at any input
VIN
VSS - 0.5 to VDD + 0.5 V
January 2000
PIN ASSIGNMENT - TOP VIEW
1
2
3
4
5
6
7
8
FIGURE 1
VDD (+V)
OUTPUT
CLOCK OUTPUT
CLOCK INPUT
DIVIDER
SELECT-1
DIVIDER
SELECT-2
VSS (-V)
RESET
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
RDD104-092491
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747
(631) 271-0400 FAX (631) 271-0405
RDD 104
UL
®
A3800




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