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參數(shù)資料
| 型號(hào)： | MC54-74HC393A |
| 廠商： | Motorola, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Dual 4-Stage Binary Ripple Counter |
| 中文描述： | 雙4位的二進(jìn)制紋波計(jì)數(shù)器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 240K |
| 代理商： | MC54-74HC393A |
SEMICONDUCTOR TECHNICAL DATA
1
REV 0
Motorola, Inc. 1995
10/95
High–Performance Silicon–Gate CMOS
The MC54/74HC393A is identical in pinout to the LS393. 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 binary ripple counters with
parallel outputs from each counter stage. A
÷
256 counter can be obtained
by cascading the two binary counters.
Internal flip–flops are triggered by high–to–low transitions of the clock
input. Reset for the counters is asynchronous and active–high. 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 as strobes except when gated
with the Clock of the HC393A.
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
μ
A
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 236 FETs or 59 Equivalent Gates
LOGIC DIAGRAM
Q1
Q2
Q3
Q4
CLOCK
RESET
1, 13
2, 12
3, 11
4, 10
5, 9
6, 8
PIN 14 = VCC
PIN 7 = GND
BINARY
COUNTER
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Clock
X
H
L
Reset
H
L
L
L
L
Outputs
L
No Change
No Change
No Change
Advance to
Next State
11
12
13
14
8
9
10
5
4
3
2
1
7
6
Q2b
Q3b
Q1b
RESET b
CLOCK b
VCC
Q4b
Q2a
Q3a
Q1a
RESET a
CLOCK a
GND
Q4a
D SUFFIX
SOIC PACKAGE
CASE 751A–03
N SUFFIX
PLASTIC PACKAGE
CASE 646–06
ORDERING INFORMATION
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXAD
MC74HCXXXADT
Ceramic
Plastic
SOIC
TSSOP
1
14
1
14
J SUFFIX
CERAMIC PACKAGE
CASE 632–08
1
14
1
14
DT SUFFIX
TSSOP PACKAGE
CASE 948G–01
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