74F245 — Octal Bidirectional Transceiver with 3-STATE Outputs
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F245 Rev. 1.4.0
January 2008
74F245
Octal Bidirectional Transceiver with 3-STATE Outputs
Features
Non-inverting buffers
Bidirectional data path
A outputs sink 24mA
B outputs sink 64mA
General Description
The 74F245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus-
oriented applications. Current sinking capability is
24mA at the A Ports and 64mA at the B Ports. The
Transmit/Receive (T/R
) input determines the direction
of data flow through the bidirectional transceiver. Trans-
mit (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.
Ordering Information
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
Order
Number
Package
Number Package Description
74F245SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74F245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F245MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74F245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74F245PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F245 Rev. 1.4.0 2
74F245 — Octal Bidirectional Transceiver with 3-STATE Outputs
Connection Diagram
Truth Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Logic Symbols
IEEE/IEC
Unit Loading/Fan Out
Inputs
OutputOE T/R
LLBus B Data to Bus A
LHBus A Data to Bus B
HXHigh Z State
Pin Names Description
U.L.
HIGH/LOW
Input I
IH
/I
IL
Output I
OH
/I
OL
OE
Output Enable Input (Active LOW) 1.0/2.0 20µA/–1.2mA
T/R
Transmit/Receive Input 1.0/2.0 20µA/–1.2mA
A
0
–A
7
Side A Inputs or
3-STATE Outputs
3.5/1.083
150/40 (38.3)
70 µA/–0.65mA
–3 mA/24mA (20mA)
B
0
–B
7
Side B Inputs or
3-STATE Outputs
3.5/1.083
600/106.6 (80)
70µA/–0.65mA
–12mA/64mA (48mA)
©1988 Fairchild Semiconductor Corporation www.fairchildsemi.com
74F245 Rev. 1.4.0 3
74F245 — Octal Bidirectional Transceiver with 3-STATE Outputs
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Note:
1. Either voltage limit or current limit is sufficient to protect inputs.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol Parameter Rating
T
STG
Storage Temperature –65°C to +150°C
T
A
Ambient Temperature Under Bias –55°C to +125°C
T
J
Junction Temperature Under Bias –55°C to +150°C
V
CC
V
CC
Pin Potential to Ground Pin –0.5V to +7.0V
V
I
Input Voltage
(1)
–0.5V to +7.0V
I
I
Input Current
(1)
–30mA to +5.0mA
Voltage Applied to Output in HIGH State (with V
CC
=
0V)
Standard Output
3-STATE Output
–0.5V to V
CC
–0.5V to +5.5V
Current Applied to Output in LOW State (Max.) twice the rated I
OL
(mA)
ESD Last Passing Voltage (Min.) 4000V
Symbol Parameter Rating
T
A
Free Air Ambient Temperature 0°C to +70°C
V
CC
Supply Voltage +4.5V to +5.5V

74F245SC

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