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74ACTQ245SJ

P1-P3P4-P6P7-P9P10-P11
© 2005 Fairchild Semiconductor Corporation DS010236 www.fairchildsemi.com
July 1989
Revised March 2005
74ACQ245 • 74ACTQ245 Quiet Series¥ Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
74ACQ245 • 74ACTQ245
Quiet Series¥ Octal Bidirectional Transceiver
with 3-STATE Inputs/Outputs
General Description
The ACQ/ACTQ245 contains eight non-inverting bidirec-
tional buffers with 3-STATE outputs and is intended for bus-
oriented applications. Current sinking capability is 24 mA at
both the A and B ports. The Transmit/Receive (T/R) input
determines the direction of data flow through the bidirec-
tional transceiver. Transmit (active-HIGH) enables data
from A Ports to B Ports; Receive (active-LOW) enables
data from B Ports to A Ports. The Output Enable input,
when HIGH, disables both A and B ports by placing them in
a HIGH Z condition.
The ACQ/ACTQ utilizes Fairchild Quiet Series
technol-
ogy to guarantee quiet output switching and improve
dynamic threshold performance. FACT Quiet Series
fea-
tures GTO
output control and undershoot corrector in
addition to a split ground bus for superior performance.
Features
■ I
CC
and I
OZ
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 24 mA
■ Faster prop delays than the standard ACT245
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
FACT
, Quiet Series , FACT Quiet Series , and GTO are trademarks of Fairchild Semiconductor Corporation.
Order Number
Package
Package Description
Number
74ACQ245SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ACQ245SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACQ245PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
74ACTQ245SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ACTQ245SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACTQ245QSC MQA20 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
74ACTQ245MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74ACTQ245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74ACTQ245MTCX_NL
(Note 1)
MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
74ACTQ245PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
www.fairchildsemi.com 2
74ACQ245 • 74ACTQ245
Connection Diagram
Logic Symbols
IEEE/IEC
Pin Descriptions
Truth Table
H HIGH Voltage Level
L
LOW Voltage Level
X
Immaterial
Pin Names Description
OE
Output Enable Input
T/R
Transmit/Receive Input
A
0
–A
7
Side A 3-STATE Inputs or 3-STATE Outputs
B
0
–B
7
Side B 3-STATE Inputs or 3-STATE Outputs
Inputs
Outputs
OE
T/R
L L Bus B Data to Bus A
L H Bus A Data to Bus B
H X HIGH-Z State
3 www.fairchildsemi.com
74ACQ245 • 74ACTQ245
Absolute Maximum Ratings(Note 2) Recommended Operating
Conditions
Note 2: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, with-
out exception, to ensure that the system design is reliable over its power
supply, temperature, and output/input loading variables. Fairchild does not
recommend operation of FACT
circuits outside databook specifications.
DC Electrical Characteristics for ACQ
Supply Voltage (V
CC
) 0.5V to 7.0V
DC Input Diode Current (I
IK
)
V
I
0.5V 20 mA
V
I
V
CC
0.5V 20 mA
DC Input Voltage (V
I
) 0.5V to V
CC
0.5V
DC Output Diode Current (I
OK
)
V
O
0.5V 20 mA
V
O
V
CC
0.5V 20 mA
DC Output Voltage (V
O
) 0.5V to V
CC
0.5V
DC Output Source
or Sink Current (I
O
) 50 mA
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
) 50 mA
Storage Temperature (T
STG
) 65 C to 150 C
DC Latch-Up Source or
Sink Current
300 mA
Junction Temperature (T
J
)
PDIP 140
C
Supply Voltage (V
CC
)
ACQ 2.0V to 6.0V
ACTQ 4.5V to 5.5V
Input Voltage (V
I
)0V to V
CC
Output Voltage (V
O
)0V to V
CC
Operating Temperature (T
A
) 40 C to 85 C
Minimum Input Edge Rate
V/ t
ACQ Devices
V
IN
from 30% to 70% of V
CC
V
CC
@ 3.0V, 4.5V, 5.5V 125 mV/ ns
Minimum Input Edge Rate
V/ t
ACTQ Devices
V
IN
from 0.8V to 2.0V
V
CC
@ 4.5V, 5.5V 125 mV/ns
Symbol Parameter
V
CC
T
A
25 CT
A
40 C to 85 C
Units Conditions
(V) Typ Guaranteed Limits
V
IH
Minimum HIGH Level 3.0 1.5 2.1 2.1 V
OUT
0.1V
Input Voltage 4.5 2.25 3.15 3.15 V or V
CC
0.1V
5.5 2.75 3.85 3.85
V
IL
Maximum LOW Level 3.0 1.5 0.9 0.9 V
OUT
0.1V
Input Voltage 4.5 2.25 1.35 1.35 V or V
CC
0.1V
5.5 2.75 1.65 1.65
V
OH
Minimum HIGH Level 3.0 2.99 2.9 2.9
Output Voltage 4.5 4.49 4.4 4.4 V I
OUT
50 A
5.55.495.4 5.4
V
IN
V
IL
or V
IH
3.0 2.56 2.46 I
OH
12 mA
4.5 3.86 3.76 V I
OH
24 mA
5.5 4.86 4.76 I
OH
24 mA (Note 3)
V
OL
Maximum LOW Level 3.0 0.002 0.1 0.1
Output Voltage 4.5 0.001 0.1 0.1 V I
OUT
50 A
5.5 0.001 0.1 0.1
V
IN
V
IL
or V
IH
3.0 0.36 0.44 I
OL
12 mA
4.5 0.36 0.44 V I
OL
24 mA
5.5 0.36 0.44 I
OL
24 mA (Note 3)
I
IN
Maximum Input 5.5 0.1 1.0 AV
I
V
CC
, GND
(Note 5) Leakage Current
I
OLD
Minimum Dynamic 5.5 75 mA V
OLD
1.65V Max
I
OHD
Output Current (Note 4) 5.5 75 mA V
OHD
3.85V Min
I
CC
Maximum Quiescent 5.5 4.0 40.0 AV
IN
V
CC
(Note 5) Supply Current or GND
I
OZT
Maximum I/O V
I
(OE) V
IL
, V
IH
Leakage Current 5.5 0.3 3.0 AV
I
V
CC
, GND
V
O
V
CC
, GND
P1-P3P4-P6P7-P9P10-P11

74ACTQ245SJ

Mfr. #:
Buy 74ACTQ245SJ
Manufacturer:
ON Semiconductor / Fairchild
Description:
Bus Transceivers Octal Bidir Trans
Lifecycle:
New from this manufacturer.
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