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CD74HC4518E Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części CD74HC4518E
Szczegółowy opis  High-Speed CMOS Logic Dual Synchronous Counters
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

CD74HC4518E Arkusz danych(HTML) 1 Page - Texas Instruments

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Data sheet acquired from Harris Semiconductor
SCHS216D
Features
• Positive or Negative Edge Triggering
• Synchronous Internal Carry Propagation
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
Description
The CD74HC4518 is a dual BCD up-counter. The ’HC4520
and CD74HCT4520 are dual binary up-counters. Each
device consists of two independent internally synchronous
4-stage counters. The counter stages are D-type flip-flops
having interchangeable CLOCK and ENABLE lines for
incrementing on either the positive-going or the negative-
going transition of CLOCK. The counters are cleared by high
levels on the MASTER RESET lines. The counter can be
cascaded in the ripple mode by connecting Q3 to the
ENABLE input of the subsequent counter while the CLOCK
input of the latter is held low.
Pinout
CD54HC4520
(CERDIP)
CD74HC4518
(PDIP)
CD74HC4520, CD74HCT4520,
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. RANGE
(oC)
PACKAGE
CD54HC4520F3A
-55 to 125
16 Ld CERDIP
CD74HC4518E
-55 to 125
16 Ld PDIP
CD74HC4520E
-55 to 125
16 Ld PDIP
CD74HC4520M
-55 to 125
16 Ld SOIC
CD74HC4520MT
-55 to 125
16 Ld SOIC
CD74HC4520M96
-55 to 125
16 Ld SOIC
CD74HCT4520E
-55 to 125
16 Ld PDIP
CD74HCT4520M
-55 to 125
16 Ld SOIC
CD74HCT4520MT
-55 to 125
16 Ld SOIC
CD74HCT4520M96
-55 to 125
16 Ld SOIC
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel. The suffix T denotes a small-quantity reel
of 250.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
1CP
1E
1Q0
1Q1
1Q2
1Q3
GND
1MR
VCC
2Q3
2Q2
2Q1
2Q0
2E
2CP
2MR
November 1997 - Revised October 2003
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© 2003, Texas Instruments Incorporated
CD74HC4518, CD54HC4520,
CD74HC4520, CD74HCT4520
High-Speed CMOS Logic
Dual Synchronous Counters
[ /Title
(CD74
HC451
8,
CD74
HC452
0,
CD74
HCT45
20)
/Sub-
ject


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