IS82C84A Intersil Corporation, IS82C84A Datasheet

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IS82C84A

Manufacturer Part Number
IS82C84A
Description
IS82C84ACMOS Clock Generator Driver
Manufacturer
Intersil Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IS82C84A
Manufacturer:
INTERSIL
Quantity:
8 831
March 1997
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
Features
• Generates the System Clock For CMOS or NMOS
• Up to 25MHz Operation
• Uses a Parallel Mode Crystal Circuit or External
• Provides Ready Synchronization
• Generates System Reset Output From Schmitt Trigger
• TTL Compatible Inputs/Outputs
• Very Low Power Consumption
• Single 5V Power Supply
• Operating Temperature Ranges
Pinouts
Microprocessors
Frequency Source
Input
- C82C84A . . . . . . . . . . . . . . . . . . . . . . . . .0
- I82C84A . . . . . . . . . . . . . . . . . . . . . . . . -40
- M82C84A . . . . . . . . . . . . . . . . . . . . . . -55
CSYNC
READY
PCLK
AEN1
AEN2
RDY1
RDY2
GND
CLK
82C84A (PDIP, CERDIP)
1
2
3
4
5
6
7
8
9
TOP VIEW
|
Copyright
18
17
16
15
14
13
12
11
10
©
Intersil Corporation 1999
V
X1
X2
ASYNC
EFI
F/C
OSC
RES
RESET
CC
o
o
o
C to +125
C to +70
C to +85
o
o
o
C
C
C
4-287
Description
The Intersil 82C84A is a high performance CMOS Clock Generator-
driver which is designed to service the requirements of both CMOS
and NMOS microprocessors such as the 80C86, 80C88, 8086 and
the 8088. The chip contains a crystal controlled oscillator, a divide-by-
three counter and complete “Ready” synchronization and reset logic.
Static CMOS circuit design permits operation with an external fre-
quency source from DC to 25MHz. Crystal controlled operation to
25MHz is guaranteed with the use of a parallel, fundamental mode
crystal and two small load capacitors.
All inputs (except X1 and RES) are TTL compatible over tempera-
ture and voltage ranges.
Power consumption is a fraction of that of the equivalent bipolar cir-
cuits. This speed-power characteristic of CMOS permits the
designer to custom tailor his system design with respect to power
and/or speed requirements.
Ordering Information
CP82C84A
IP82C84A
CS82C84A
IS82C84A
CD82C84A
ID82C84A
MD82C84A/B
8406801VA
MR82C84A/B
84068012A
NUMBER
PART
READY
AEN2
RDY1
RDY2
NC
CMOS Clock Generator Driver
4
5
6
7
8
-55
-55
TEMP. RANGE
-40
-40
-40
0
0
0
82C84A (PLCC, CLCC)
o
o
o
o
o
3
9
o
o
o
C to +70
C to +70
C to +70
C to +125
C to +125
C to +85
C to +85
C to +85
82C84A
10
2
TOP VIEW
11
o
o
o
1
o
o
o
C
C
C
o
o
C
C
C
C
C
20
12
18 Ld PDIP
20 Ld PLCC
18 Ld CERDIP F18.3
20 Pad CLCC
19
13
PACKAGE
SMD#
SMD#
File Number
18
17
16
15
14
X2
ASYNC
EFI
F/C
NC
E18.3
E18.3
N20.35
N20.35
F18.3
F18.3
F18.3
J20.A
J20.A
PKG.
NO.
2974.1

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IS82C84A Summary of contents

Page 1

... Ordering Information +70 C PART NUMBER +85 C CP82C84A +125 C IP82C84A CS82C84A IS82C84A CD82C84A ID82C84A MD82C84A/B 8406801VA MR82C84A/B 84068012A RDY1 15 ASYNC READY 14 EFI ...

Page 2

Functional Diagram 11 RES OSCILLATOR X2 13 F/C 14 EF1 1 CSYNC 4 RDY1 3 AEN1 6 RDY2 7 AEN2 15 ASYNC CONTROL PIN F/C RES RDY1, RDY2 AEN1, AEN2 ASYNC 82C84A XTAL 3 SYNC CK D ...

Page 3

Pin Description SYMBOL NUMBER TYPE AEN1 ADDRESS ENABLE: AEN is an active LOW signal. AEN serves to qualify its respective Bus AEN2 Ready Signal (RDY1 or RDY2). AEN1 validates RDY1 while AEN2 validates RDY2. Two AEN signal ...

Page 4

Functional Description Oscillator The oscillator circuit of the 82C84A is designed primarily for use with an external parallel resonant, fundamental mode crystal from which the basic operating frequency is derived. The crystal frequency should be selected at three times the ...

Page 5

Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 6

AC Electrical Specifications - -55 A SYMBOL PARAMETER TIMING REQUIREMENTS (1) TEHEL External Frequency HIGH Time (2) TELEH External Frequency LOW Time (3) TELEL EFI Period XTAL Frequency (4) ...

Page 7

Timing Waveforms (3) NAME I/O EFI I OSC O tOLCH CLK O tCH1CH2 PCLK O (13) tEHYL CSYNC I (14) tYHYL RES I RESET O NOTE: All timing measurements are made at 1.5V, unless otherwise noted. FIGURE 2. WAVEFORMS FOR ...

Page 8

Test Load Circuits DEVICE UNDER TEST NOTES =100pF for CLK output 50pF for all outputs except CLK Includes probe and jig capacitance. L FIGURE 5. TEST LOAD MEASUREMENT CONDITIONS CLK ...

Page 9

Burn-In Circuits GND GND GND OPEN NOTES 5.5V 0.5V, GND = 0V ...

Page 10

... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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