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CD74HC390M96 датащи(PDF) 1 Page - Texas Instruments

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номер детали CD74HC390M96
подробное описание детали  High-Speed CMOS Logic Dual Decade Ripple Counter
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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CD74HC390M96 датащи(HTML) 1 Page - Texas Instruments

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Data sheet acquired from Harris Semiconductor
SCHS185C
Features
• Two BCD Decade or Bi-Quinary Counters
• One Package Can Be Configured to Divide-by-2, 4,
5,10, 20, 25, 50 or 100
• Two Master Reset Inputs to Clear Each Decade
Counter Individually
• 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
Pinout
CD54HCT390
(CERDIP)
CD74HC390, CD74HCT390
(PDIP, SOIC)
TOP VIEW
Description
The CD74HC390 and ’HCT390 dual 4-bit decade ripple
counters are high-speed silicon-gate CMOS devices and are
pin compatible with low-power Schottky TTL (LSTTL). These
devices are divided into four separately clocked sections.
The counters have two divide-by-2 sections and two divide-
by-5 sections. These sections are normally used in a BCD
decade or bi-quinary configuration, since they share a com-
mon master reset (nMR). If the two master reset inputs (1MR
and 2MR) are used to simultaneously clear all 8 bits of the
counter, a number of counting configurations are possible
within one package. The separate clock inputs (nCP0 and
nCP1) of each section allow ripple counter or frequency divi-
sion applications of divide-by-2, 4. 5, 10, 20, 25, 50 or 100.
Each section is triggered by the High-to-Low transition of the
input pulses (nCP0 and nCP1).
For BCD decade operation, the nQ0 output is connected to
the nCP1 input of the divide-by-5 section. For bi-quinary
decade operation, the nO3 output is connected to the nCP0
input and nQ0 becomes the decade output.
The master reset inputs (1MR and 2MR) are active-High
asynchronous inputs to each decade counter which oper-
ates on the portion of the counter identified by the “1” and “2”
prefixes in the pin configuration. A High level on the nMR
input overrides the clock and sets the four outputs Low.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
1CP0
1MR
1Q0
1CP1
1Q1
1Q2
GND
1Q3
VCC
2MR
2Q0
2CP1
2Q1
2Q2
2Q3
2CP0
Ordering Information
PART NUMBER
TEMP. RANGE
(oC)
PACKAGE
CD54HCT390F3A
-55 to 125
16 Ld CERDIP
CD74HC390E
-55 to 125
16 Ld PDIP
CD74HC390M
-55 to 125
16 Ld SOIC
CD74HC390MT
-55 to 125
16 Ld SOIC
CD74HC390M96
-55 to 125
16 Ld SOIC
CD74HCT390E
-55 to 125
16 Ld PDIP
CD74HCT390M
-55 to 125
16 Ld SOIC
CD74HCT390MT
-55 to 125
16 Ld SOIC
CD74HCT390M96
-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.
September 1997 - Revised October 2003
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© 2003, Texas Instruments Incorporated
CD74HC390,
CD54HCT390, CD74HCT390
High-Speed CMOS Logic
Dual Decade Ripple Counter
[ /Title
(CD74
HC390
,
CD74
HCT39
0)
/Sub-
ject
(High
Speed
CMOS


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