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JM38510/37203B2A Datasheet

  • JM38510/37203B2A

  • OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS

  • 10頁

  • TI

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SN54ALS373A, SN54AS373, SN74ALS373A, SN74AS373
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS083C 鈥?APRIL 1982 鈥?REVISED MARCH 2002
D
D
D
D
D
Eight Latches in a Single Package
3-State Bus-Driving True Outputs
Full Parallel Access for Loading
Buffered Control Inputs
pnp Inputs Reduce dc Loading on Data
Lines
SN54ALS373A, . . . J OR W PACKAGE
SN54AS373 . . . J PACKAGE
SN74ALS373A, SN74AS373 . . . DW, N, OR NS PACKAGE
(TOP VIEW)
description
These octal transparent D-type latches feature
3-state outputs designed specifically for driving
highly capacitive or relatively low-impedance
loads. They are particularly suitable for
implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.
While the latch-enable (LE) input is high, the Q
outputs follow the data (D) inputs. When LE is
taken low, the Q outputs are latched at the logic
levels set up at the D inputs.
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low) or a high-impedance state. In
the high-impedance state, the outputs neither
load nor drive the bus lines significantly. The
high-impedance state and the increased drive
provide the capability to drive bus lines without
interface or pullup components.
OE does not affect internal operations of the
latches. Old data can be retained or new data can
be entered while the outputs are off.
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
LE
SN54ALS373A, SN54AS373 . . . FK PACKAGE
(TOP VIEW)
OE
V
CC
1D
1Q
2D
2Q
3Q
3D
4D
3
4
5
6
7
8
2 1 20 19
18
17
16
15
8Q
8D
7D
7Q
6Q
6D
14
9 10 11 12 13
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>
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.
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
4Q
GND
LE
5Q
5D
1

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