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74HC390A 데이터시트(PDF) 1 Page - Motorola, Inc

부품명 74HC390A
상세설명  High?밣erformance Silicon?밎ate CMOS
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제조업체  MOTOROLA [Motorola, Inc]
홈페이지  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

74HC390A 데이터시트(HTML) 1 Page - Motorola, Inc

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1
REV 0
© Motorola, Inc. 1995
10/95
Product Preview
Dual 4-Stage Binary
Ripple Counter with
÷ 2 and ÷ 5 Sections
High–Performance Silicon–Gate CMOS
The MC54/74HC390A is identical in pinout to the LS390. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
This device consists of two independent 4–bit counters, each composed
of a divide–by–two and a divide–by–five section. The divide–by–two and
divide–by–five counters have separate clock inputs, and can be cascaded to
implement various combinations of
÷ 2 and/or ÷ 5 up to a ÷ 100 counter.
Flip–flops internal to the counters are triggered by high–to–low transitions
of the clock input. A separate, asynchronous reset is provided for each 4–bit
counter. State changes of the Q outputs do not occur simultaneously
because of internal ripple delays. Therefore, decoded output signals are
subject to decoding spikes and should not be used as clocks or strobes
except when gated with the Clock of the HC390A.
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2 to 6 V
• Low Input Current: 1 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No 7A
• Chip Complexity: 244 FETs or 61 Equivalent Gates
LOGIC DIAGRAM
QA
QB
QC
QD
1, 15
4, 12
2, 14
3, 13
5, 11
6, 10
7, 9
PIN 16 = VCC
PIN 8 = GND
CLOCK A
RESET
CLOCK B
÷ 2
COUNTER
÷ 5
COUNTER
This document contains information on a product under development. Motorola reserves the right
to change or discontinue this product without notice.
MC54/74HC390A
PIN ASSIGNMENT
13
14
15
16
9
10
11
12
5
4
3
2
1
8
7
6
CLOCK Bb
QAb
RESET b
CLOCK Ab
VCC
QDb
QCb
QBb
CLOCK Ba
QAa
RESET a
CLOCK Aa
GND
QDa
QCa
QBa
FUNCTION TABLE
Clock
A
B
Reset
Action
X
X
H
Reset
÷ 2 and ÷ 5
X
L
Increment
÷ 2
X
L
Increment
÷ 5
D SUFFIX
SOIC PACKAGE
CASE 751B–05
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
ORDERING INFORMATION
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXAD
MC74HCXXXADT
Ceramic
Plastic
SOIC
TSSOP
1
16
1
16
J SUFFIX
CERAMIC PACKAGE
CASE 620–10
1
16
1
16
DT SUFFIX
TSSOP PACKAGE
CASE 948F–01


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