900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Fairchild Semiconductor Electronic Components Datasheet

74373 Datasheet

3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops

No Preview Available !

April 1986
Revised March 2000
DM74LS373 • DM74LS374
3-STATE Octal D-Type Transparent Latches
and Edge-Triggered Flip-Flops
General Description
These 8-bit registers feature totem-pole 3-STATE outputs
designed specifically for driving highly-capacitive or rela-
tively low-impedance loads. The high-impedance state and
increased high-logic level drive provide these registers with
the capability of being connected directly to and driving the
bus lines in a bus-organized system without need for inter-
face or pull-up components. They are particularly attractive
for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers.
The eight latches of the DM74LS373 are transparent D-
type latches meaning that while the enable (G) is HIGH the
Q outputs will follow the data (D) inputs. When the enable
is taken LOW the output will be latched at the level of the
data that was set up.
The eight flip-flops of the DM74LS374 are edge-triggered
D-type flip flops. On the positive transition of the clock, the
Q outputs will be set to the logic states that were set up at
the D inputs.
A buffered output control input can be used to place the
eight outputs in either a normal logic state (HIGH or LOW
logic levels) or a high-impedance state. In the high-imped-
ance state the outputs neither load nor drive the bus lines
significantly.
The output control does not affect the internal operation of
the latches or flip-flops. That is, the old data can be
retained or new data can be entered even while the outputs
are OFF.
Features
s Choice of 8 latches or 8 D-type flip-flops in a single
package
s 3-STATE bus-driving outputs
s Full parallel-access for loading
s Buffered control inputs
s P-N-P inputs reduce D-C loading on data lines
Ordering Code:
Order Number Package Number
Package Description
DM74LS373WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74LS373SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74LS373N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DM74LS374WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74LS374SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
IDM29901NC
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
© 2000 Fairchild Semiconductor Corporation DS006431
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

74373 Datasheet

3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops

No Preview Available !

Connection Diagrams
DM74LS373
DM74LS374
Function Tables
DM74LS373
DM74LS374
Output
Enable
D Output
Control
G
L HHH
L HLL
L L X Q0
H XXZ
Output
Control
L
L
L
H
Clock
L
X
D
H
L
X
X
H = HIGH Level (Steady State)
L = LOW Level (Steady State)
X = Don’t Care
Z = High Impedance State
↑ = Transition from LOW-to-HIGH level
Q0 = The level of the output before steady-state input conditions were established.
Logic Diagrams
Output
H
L
Q0
Z
DM74LS373
Transparent Latches
DM74LS374
Positive-Edge-Triggered Flip-Flops
www.fairchildsemi.com
2


Part Number 74373
Description 3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops
Maker Fairchild Semiconductor
Total Page 8 Pages
PDF Download

74373 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 74373 LOW POWER SCHOTTKY
ON Semiconductor
2 74373 3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops
Fairchild Semiconductor
3 74374 Octal D-Type Flip Flop
SGS-Thomson





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy