Datenblatt-pdf.com


CDP1872 Schematic ( PDF Datasheet ) - Intersil Corporation

Teilenummer CDP1872
Beschreibung High-Speed 8-Bit Input and Output Ports
Hersteller Intersil Corporation
Logo Intersil Corporation Logo 




Gesamt 6 Seiten
CDP1872 Datasheet, Funktion
CDP1872C,
CDP1874C, CDP1875C
March 1997
High-Speed 8-Bit Input and Output Ports
Features
Description
• Parallel 8-Bit Input/Output Register with Buffered Out-
puts
• High-Speed Data-In to Data-Out 85ns (Max) at VDD = 5V
• Flexible Applications In Microprocessor Systems as
Buffers and Latches
• High Order Address-Latch Capability in CDP1800-
Series Microprocessor Systems
• Output Sink Current = 5mA (Min) at VDD = 5V
• Three-State Output - CDP1872C and CDP1874C
Ordering Information
PART
NUMBER
CDP1872CE
CDP1874CE
CDP1875CE
TEMP. RANGE PACKAGE
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
PDIP
PDIP
PDIP
PKG.
NO.
E22.4
E22.4
E22.4
The CDP1872C, CDP1874C and CDP1875C devices are
high-speed 8-bit parallel input and output ports designed for
use in the CDP1800 microprocessor system and for general
use in other microprocessor systems. The CDP1872C and
CDP1874C are 8-bit input ports; the CDP1875C is an 8-bit
output port.
These devices have flexible capabilities as buffers and data
latches and are reset by CLR input when the data strobe is
not active.
The CDP1872C and CDP1874C are functionally identical
except for device selects.The CDP1872C has one active low
and one active high select; the CDP1874C has two active
high device selects. These devices also feature Three-state
outputs when deselected. Data is strobed into the register on
the leading edge of the CLOCK and latched on the trailing
edge of the CLOCK.
The CDP1875C is an output port with data latched into the
registers when the device selects are active. There are two
active high and one active low selects. The output buffers
are enabled at all times.
Pinouts
CDP1872C INPUT PORT
(PDIP)
TOP VIEW
CDP1874C INPUT PORT
(PDIP)
TOP VIEW
CDP1875C OUTPUT PORT
(PDIP)
TOP VIEW
CS1
DI0
DO0
1
2
3
DI1 4
D01 5
DI2 6
D02 7
DI3 8
D03 9
CLOCK 10
VSS 11
22 VDD
21 DI7
20 D07
19 DI6
18 D06
17 DI5
16 D05
15 DI4
14 D04
13 CLR
12 CS2
CS1
DI0
DO0
1
2
3
DI1 4
D01 5
DI2 6
D02 7
DI3 8
D03 9
CLOCK 10
VSS 11
22 VDD
21 DI7
20 D07
19 DI6
18 D06
17 DI5
16 D05
15 DI4
14 D04
13 CLR
12 CS2
CS1
DI0
DO0
1
2
3
DI1 4
D01 5
DI2 6
D02 7
DI3 8
D03 9
CS3 10
VSS 11
22 VDD
21 DI7
20 D07
19 DI6
18 D06
17 DI5
16 D05
15 DI4
14 D04
13 CLR
12 CS2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
4-76
File Number 1255.2






CDP1872 Datasheet, Funktion
CDP1872C, CDP1874C, CDP1875C
DATA IN
DATA IN
MRD
CDP1802
N0 N1 N2 DO - D7
CS1
CS2
DI DO
CDP1874C
TPB
CS2
CS3
CS1
DI
DO
CDP1875C
CS1
CS2
CS1
CS2
DI DO
CDP1874C
MEMORY
TPB
DI DO
CDP1875C
CS3
FIGURE 8. CDP1874C AND CDP1875C USED AS INPUT/OUTPUT BUFFERS
DATA OUT
DATA OUT
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; nor for any infringements of patents or other rights of third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (407) 724-7000
FAX: (407) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
Taiwan Limited
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
4-81

6 Page







SeitenGesamt 6 Seiten
PDF Download[ CDP1872 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
CDP1870C(CDP1869C - CDP1876C) Video Interface SystemETC
ETC
CDP1871CMOS Keyboard EncoderIntersil Corporation
Intersil Corporation
CDP1871ACMOS Keyboard EncoderGE
GE
CDP1871ACMOS Keyboard EncoderIntersil Corporation
Intersil Corporation
CDP1871ACCMOS Keyboard EncoderGE
GE

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche