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74ACQ244 Schematic ( PDF Datasheet ) - Fairchild Semiconductor

Teilenummer 74ACQ244
Beschreibung Quiet Series. Octal Buffer/Line Driver with 3-STATE Outputs
Hersteller Fairchild Semiconductor
Logo Fairchild Semiconductor Logo 




Gesamt 12 Seiten
74ACQ244 Datasheet, Funktion
March 2007
74ACQ244, 74ACTQ244
Quiet Series™ Octal Buffer/Line Driver with 3-STATE
tm
Outputs
Features
ICC and IOZ reduced by 50%
Guaranteed simultaneous switching noise level and
dynamic threshold performance
Guaranteed pin-to-pin skew AC performance
Improved latch-up immunity
3-STATE outputs drive bus lines or buffer memory
address registers
Outputs source/sink 24mA
Faster prop delays than the standard AC/ACT244
General Description
The ACQ/ACTQ244 is an octal buffer and line driver
designed to be employed as a memory address driver,
clock driver and bus oriented transmitter or receiver
which provides improved PC board density. The ACQ/
ACTQ utilizes Fairchild Quiet Series™ technology to
guarantee quiet output switching and improved dynamic
threshold performance. FACT Quiet Series™ features
GTO™ output control and undershoot corrector in addi-
tion to a split ground bus for superior performance.
Ordering Information
Package
Order Number Number
Package Description
74ACQ244SC
74ACQ244SJ
74ACTQ244SC
74ACTQ244SJ
74ACTQ244QSC
74ACTQ244MSA
M20B
M20D
M20B
M20D
MQA20
MSA20
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
www.DataSheet4U.com
Body
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
Body
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150” Wide
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
Connection Diagram
Pin Description
Pin Names
Description
OE1, OE2
I0–I 7
O0–O 7
3-STATE Output Enable Inputs
Inputs
Outputs
FACT™, Quiet Series™, FACT Quiet Series™, and GTO™ are trademarks of Fairchild Semiconductor Corporation.
©1989 Fairchild Semiconductor Corporation
74ACQ244, 74ACTQ244 Rev. 1.3
www.fairchildsemi.com






74ACQ244 Datasheet, Funktion
AC Electrical Characteristics for ACQ
Symbol
tPHL, tPLH
Parameter
Propagation Delay Data
to Output
tPZL , tPZH Output Enable Time
tPHZ, tPLZ Output Disable Time
tOSHL, tOSLH Output to Output Skew
Data to Output(11)
VCC (V)(10)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
TA = +25°C,
CL = 50pF
Min. Typ. Max.
2.0 7.0 9.0
1.5 5.0 6.0
2.5 8.0 12.0
1.5 6.5 8.0
1.0 9.0 13.5
1.0 7.5 9.0
1.0 1.5
0.5 1.0
TA = –40°C to +85°C,
CL = 50pF
Min.
Max.
2.0 9.5
1.5 6.5
2.5 12.5
1.5 8.5
1.0 14.0
1.0 9.5
1.5
1.0
Units
ns
ns
ns
ns
Note:
10. Voltage range 5.0 is 5.0V ± 0.5V. Voltage range 3.3 is 3.3V ± 0.3V.
11. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate
outputs of the same device. The specification applies to any outputs switching in the same direction, either
HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design.
AC Electrical Characteristics for ACTQ
Symbol
Parameter
tPHL, tPLH Propagation Delay,
Data to Output
tPZL, tPZH
tPHZ, tPLZ
tOSHL, tOSLH
Output Enable Time
Output Disable Time
Output to Output Skew,
Data to Output(13)
VCC (V)(12)
5.0
5.0
5.0
5.0
TA = +25°C,
CL = 50pF
Min. Typ. Max.
1.5 5.5 6.5
TA = –40°C to +85°C,
CL = 50pF
Min.
Max.
1.5 7.0
Units
ns
1.5 7.0 8.5
1.0 8.0 9.5
0.5 1.0
1.5
1.0
9.0 ns
10.0 ns
1.0 ns
Notes:
12. Voltage range 5.0 is 5.0V ± 0.5V.
13. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate
outputs of the same device. The specification applies to any outputs switching in the same direction, either
HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design.
Capacitance
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation Capacitance
Conditions
VCC = OPEN
VCC = 5.0V
Typ.
4.5
70
Units
pF
pF
©1989 Fairchild Semiconductor Corporation
74ACQ244, 74ACTQ244 Rev. 1.3
6
www.fairchildsemi.com

6 Page









74ACQ244 pdf, datenblatt
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an
exhaustive list of all such trademarks.
ACEx®
Across the board. Around the world.¥
ActiveArray¥
Bottomless¥
Build it Now¥
CoolFET¥
CROSSVOLT¥
CTL™
Current Transfer Logic™
DOME¥
E2CMOS¥
EcoSPARK®
EnSigna¥
FACT Quiet Series™
FACT®
FAST®
FASTr¥
FPS¥
FRFET®
GlobalOptoisolator¥
GTO¥
HiSeC¥
i-Lo¥
ImpliedDisconnect¥
IntelliMAX¥
ISOPLANAR¥
MICROCOUPLER¥
MicroPak¥
MICROWIRE¥
MSX¥
MSXPro¥
OCX¥
OCXPro¥
OPTOLOGIC®
OPTOPLANAR®
PACMAN¥
POP¥
Power220®
Power247®
PowerEdge¥
PowerSaver¥
PowerTrench®
Programmable Active Droop¥
QFET®
QS¥
QT Optoelectronics¥
Quiet Series¥
RapidConfigure¥
RapidConnect¥
ScalarPump¥
SMART START¥
SPM®
STEALTH™
SuperFET¥
SuperSOT¥-3
SuperSOT¥-6
SuperSOT¥-8
SyncFET™
TCM¥
The Power Franchise®
TinyBoost¥
TinyBuck¥
TinyLogic®
TINYOPTO¥
TinyPower¥
TinyWire¥
TruTranslation¥
PSerDes¥
UHC®
UniFET¥
VCX¥
Wire¥
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS
HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE
APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER
ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S
WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in a significant injury of the user.
2. A critical component in any component of a life support,
device, or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status
Advance Information
Formative or In Design
Preliminary
First Production
No Identification Needed Full Production
Obsolete
Not In Production
Definition
This datasheet contains the design specifications for product
development. Specifications may change in any manner without notice.
This datasheet contains preliminary data; supplementary data will be
published at a later date. Fairchild Semiconductor reserves the right to
make changes at any time without notice to improve design.
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice to improve
design.
This datasheet contains specifications on a product that has been
discontinued by Fairchild Semiconductor. The datasheet is printed for
reference information only.
Rev. I24
©1989 Fairchild Semiconductor Corporation
74ACQ244, 74ACTQ244 Rev. 1.3
12
www.fairchildsemi.com

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