MC74ACT823 Motorola, MC74ACT823 Datasheet

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MC74ACT823

Manufacturer Part Number
MC74ACT823
Description
9-BIT REGISTER WITH 3-STATE OUTPUTS (Non-Inverting)
Manufacturer
Motorola
Datasheet
www.DataSheet4U.com
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9 Bit Register With 3 State
Outputs (Non Inverting)
device has 3-state outputs for bus systems, organized in a broadside pinning. In
addition to the clock and output enabled pins, the buffered clock (CP) and buffered
Output Enable (OE) are common to all flip-flips. The flip-flops will store the state of
their individual D inputs that meet the setup and hold time requirements on the
LOW-to-HIGH CP transition. With OE LOW, the contents of the flip-flops are available
at the outputs. When OE is HIGH, the outputs go to the high impedance state.
MC74AC/ACT823 has Clear (CLR) and Clock Enable (EN) pins. These devices are
ideal for parity bus interfacing in high performance systems.
data can be entered into the flip-flops. When EN is LOW, data on the inputs is
transferred to the outputs on the LOW-to-HIGH clock transition. When EN is HIGH,
the outputs do not change state, regardless of the data or clock input transitions.
4
FUNCTION TABLE
H = HIGH Voltage Level; L = LOW Voltage Level; X = Immaterial; Z = High Impedance State;
3-State Outputs for Bus Interfacing
Broad Side Pin Configuration
ACT has TTL – Compatible Inputs
High Speed Parallel Positive Edge-Triggered D-Type Flip-Flops
High Performance Bus Interface Buffering for Busses Carrying Parity
Outputs Source/Sink 24 mA
The MC74AC/ACT823 consists of nine D-type edge-triggered flip-flops. This
Operation of the OE input does not affect the state of the flip-flops. The
When CLR is LOW, and OE is LOW, the outputs are LOW. When CLR is HIGH,
OE
V CC
H
H
H
H
H
H
L
L
L
L
OE 1
24
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
1
O 0
23
D 0
2
CLR
X
X
H
H
H
H
H
H
L
L
O 1
22
D 1
3
Pinout: 24-Lead Packages (Top View)
O 2
21
D 2
4
Inputs
EN
H
H
X
X
L
L
L
L
L
L
O 3
20
D 3
5
O 4
19
D 4
6
CP
X
X
X
X
O 5
D 5
18
7
O 6
D 6
17
Dn
8
H
X
X
X
X
H
H
L
L
L
O 7
D 7
16
9
O 8
D 8
15
10
FACT DATA
Internal
NC
NC
H
H
H
Q
L
L
L
L
L
5-1
CLR
EN
14
11
GND
CP
13
12
= LOW-to-High Transition; NC = No Change
Outputs
NC
O
H
Z
Z
Z
L
Z
Z
Z
L
MC74ACT823
MC74AC823
PIN NAMES
D 0 – D 8
O 0 – O 8
OE
EN
CLR
CP
High Z
High Z
Clear
Clear
Hold
Hold
Load
Load
Load
Load
9-BIT REGISTER WITH
24
3-STATE OUTPUTS
PLASTIC PACKAGE
1
SOIC PACKAGE
CASE 751E-04
CASE 724-03
DW SUFFIX
Operating Mode
Operating Mode
N SUFFIX
Data Inputs
Data Outputs
Output Enable
Clock Enable
Clear
Clock Input

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MC74ACT823 Summary of contents

Page 1

... FACT DATA 5-1 MC74AC823 MC74ACT823 9-BIT REGISTER WITH 3-STATE OUTPUTS SUFFIX CASE 724-03 PLASTIC PACKAGE DW SUFFIX CASE 751E-04 SOIC PACKAGE PIN NAMES D 0 – Data Inputs O 0 – Data Outputs OE Output Enable ...

Page 2

... CLR OE 4 DataSheet U .com MC74AC823 MC74ACT823 LOGIC SYMBOL LOGIC DIAGRAM CLR CLR CLR CLR ...

Page 3

... V in from 30 see individual Data Sheets for devices that differ from the typical input rise and fall times from 0 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times. 4 DataSheet U .com MC74AC823 MC74ACT823 Parameter Parameter AC ACT ...

Page 4

... All outputs loaded; thresholds on input associated with output under test. † Maximum test duration 2.0 ms, one input loaded at a time. Note and 3.0 V are guaranteed to be less than or equal to the respective limit @ 5 DataSheet U .com MC74AC823 MC74ACT823 74AC Parameter ...

Page 5

... Hold Time, HIGH or LOW Pulse Width HIGH or LOW CLR Pulse Width, LOW CLR rec t rec Recovery Time * Voltage Range 3 3.3 V 0.3 V. Voltage Range 5 5 DataSheet U .com MC74AC823 MC74ACT823 Parameter Parameter (V) (V) Min 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5 ...

Page 6

... Output Current I OHD I CC Maximum Quiescent Supply Current Supply Current * All outputs loaded; thresholds on input associated with output under test. † Maximum test duration 2.0 ms, one input loaded at a time. 4 DataSheet U .com MC74AC823 MC74ACT823 74ACT Parameter Parameter +25 C (V) (V) Typ 4 ...

Page 7

... HIGH or LOW CLR Pulse Width LOW CLR rec t rec Recovery TIme * Voltage Range 5 5.0 V 0.5 V. CAPACITANCE Symbol C IN Input Capacitance C PD Power Dissipation Capacitance 4 DataSheet U .com MC74AC823 MC74ACT823 Parameter Parameter (V) (V) Min 5.0 5.0 120 120 5.0 5.0 1.5 1.5 5.0 5.0 2.0 2.0 5 ...

Page 8

... How to reach us: USA/EUROPE: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 MFAX: RMFAX0@email.sps.mot.com –TOUCHTONE (602) 244–6609 INTERNET: http://Design–NET.com 4 DataSheet U .com MC74AC823 MC74ACT823 OUTLINE DIMENSIONS N SUFFIX PLASTIC DIP PACKAGE CASE 724–03 ISSUE D 13 –B– ...

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