SN54LS245_07 Datasheet, PDF (1/18 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

D 3-State Outputs Drive Bus Lines Directly
D PNP Inputs Reduce dc Loading on Bus
Lines
D Hysteresis at Bus Inputs Improves Noise
Margins
D Typical Propagation Delay Times Port to
Port, 8 ns
TYPE
SN54LS245
SN74LS245
IOL
(SINK
CURRENT)
12 mA
24 mA
IOH
(SOURCE
CURRENT)
–12 mA
–15 mA
description
These octal bus transceivers are designed for
asynchronous two-way communication between
data buses. The control-function implementation
minimizes external timing requirements.
The devices allow data transmission from the
A bus to the B bus or from the B bus to the A bus,
depending on the logic level at the
direction-control (DIR) input. The output-enable
(OE) input can disable the device so that the
buses are effectively isolated.
SN54LS245, SN74LS245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDLS146A – OCTOBER 1976 – REVISED FEBRUARY 2002
SN54LS245 . . . J OR W PACKAGE
SN74LS245 . . . DB, DW, N, OR NS PACKAGE
(TOP VIEW)
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND ¹⁰
20 V_CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 _B8
SN54LS245 . . . FK PACKAGE
(TOP VIEW)
A3
3 2 1 20 19
4
18
B1
A4 ₅
17 ^B2
A5 6
16 B3
A6 7
15 B4
A7 8
14 B5
9 10 11 12 13
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube
SN74LS245N
SN74LS245N
0°C to 70°C
SOIC – DW
Tube
Tape and reel
SN74LS245DW
SN74LS245DWR
LS245
SOP – NS
Tape and reel SN74LS245NSR
74LS245
SSOP – DB Tape and reel SN74LS245DBR
LS245
–55°C to 125°C
CDIP – J
CFP – W
Tube
Tube
Tube
SN54LS245J
SNJ54LS245J
SNJ54LS245W
SN54LS245J
SNJ54LS245J
SNJ54LS245W
LCCC – FK Tube
SN54LS245FK
SN54LS245FK
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design}
guidelines are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
1