SN54AHC245, SN74AHC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS230I 鈥?OCTOBER 1995 鈥?REVISED JULY 2003
D
D
Operating Range 2-V to 5.5-V V
CC
Latch-Up Performance Exceeds 250 mA Per
JESD 17
SN54AHC245 . . . J OR W PACKAGE
SN74AHC245 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
description/ordering information
The 鈥橝HC245 octal bus transceivers are designed
for asynchronous two-way communication
between data buses. The control-function
implementation minimizes external timing
requirements.
These 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 be used to disable the device so
that the buses are effectively isolated.
To ensure the high-impedance state during power
up or power down, OE should be tied to V
CC
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54AHC245 . . . FK PACKAGE
(TOP VIEW)
A2
A1
DIR
V
CC
OE
A3
A4
A5
A6
A7
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
B1
B2
B3
B4
B5
ORDERING INFORMATION
TA
PDIP 鈥?N
SOIC 鈥?DW
鈥?0擄C to 85擄C
SSOP 鈥?DB
TSSOP 鈥?PW
TVSOP 鈥?DGV
CDIP 鈥?J
鈥?5擄C to 125擄C
CFP 鈥?W
LCCC 鈥?FK
PACKAGE鈥?/div>
Tube
Tube
Tape and reel
Tape and reel
Tube
Tape and reel
Tape and reel
Tube
Tube
Tube
ORDERABLE
PART NUMBER
SN74AHC245N
SN74AHC245DW
SN74AHC245DWR
SN74AHC245DBR
SN74AHC245PW
SN74AHC245PWR
SN74AHC245DGVR
SNJ54AHC245J
SNJ54AHC245W
SNJ54AHC245FK
TOP-SIDE
MARKING
SN74AHC245N
AHC245
HA245
HA245
HA245
SNJ54AHC245J
SNJ54AHC245W
SNJ54AHC245FK
鈥?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.
Copyright
錚?/div>
2003, 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.
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
鈥?/div>
DALLAS, TEXAS 75265
A8
GND
B8
B7
B6
1
next