74LS373 National Semiconductor, 74LS373 Datasheet

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74LS373

Manufacturer Part Number
74LS373
Description
3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops 74LS373Octal D-type Transparent Latches(with three-state outputs) 74LS373OCTAL D-TYPE TRANSPARENT LATCHES AND EDGE-TRIGGERED FLIP-FLOPS 74LS373OCTAL TRANSPARENT LAT
Manufacturer
National Semiconductor
Datasheet

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C 1995 National Semiconductor Corporation
DM54LS373 DM74LS373
DM54LS374 DM74LS374
TRI-STATE Octal D-Type Transparent
Latches and Edge-Triggered Flip-Flops
General Description
These 8-bit registers feature totem-pole TRI-STATE outputs
designed specifically for driving highly-capacitive or relative-
ly low-impedance loads The high-impedance state and in-
creased 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
Connection Diagrams
TRI-STATE is a registered trademark of National Semiconductor Corp
TL F 6431
Dual-In-Line Packages
’LS373
’LS374
(Continued)
Features
Y
Y
Y
Y
Y
Choice of 8 latches or 8 D-type flip-flops in a single
package
TRI-STATE bus-driving outputs
Full parallel-access for loading
Buffered control inputs
P-N-P inputs reduce D-C loading on data lines
TL F 6431 – 1
TL F 6431– 2
See NS Package Number
See NS Package Number
J20A M20B N20A or
J20A M20B N20A or
DM74LS374WM or
DM74LS373N or
DM74LS373WM
Order Number
DM54LS373W
Order Number
DM54LS374W
DM54LS373J
DM54LS374J
DM74LS374N
RRD-B30M105 Printed in U S A
W20A
W20A
May 1992

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74LS373 Summary of contents

Page 1

... DM54LS373 DM74LS373 DM54LS374 DM74LS374 TRI-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops General Description These 8-bit registers feature totem-pole TRI-STATE outputs designed specifically for driving highly-capacitive or relative- ly low-impedance loads The high-impedance state and in- creased high-logic level drive provide these registers with ...

Page 2

... General Description (Continued) The eight latches of the DM54 74LS373 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 ...

Page 3

... IL DM74 V Min Min DM54 Max Max e IL DM74 V Min DM74 Min Max Max Max Max Min V Max Max Min V Max Max DM54 (Note 2) DM74 b V Max Enable GND DM74LS373 Units Min Nom Max Typ Min Max Units (Note 100 225 ...

Page 4

Switching Characteristics (See Section 1 for Test Waveforms and Output Load) Symbol Parameter t Propagation Delay PLH Time Low to High Level Output t Propagation Delay PHL Time High to Low Level Output t Propagation Delay PLH Time Low ...

Page 5

Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter V Input Clamp Voltage High Level Output Voltage Low Level Output Voltage ...

Page 6

Physical Dimensions inches (millimeters) 20-Lead Ceramic Dual-In-Line Package (J) Order Number DM54LS373J or DM54LS374J NS Package Number J20A 6 ...

Page 7

... Physical Dimensions inches (millimeters) (Continued) 20-Lead Wide Small Outline Molded Package (M) Order Number DM74LS373WM or DM74LS374WM 20-Lead Molded Dual-In-Line Package (N) Order Number DM74LS373N and DM74LS374N NS Package Number M20B NS Package Number N20A 7 ...

Page 8

... Hong Kong Ltd 49) 0-180-530 85 86 13th Floor Straight Block a Ocean Centre 5 Canton Rd 49) 0-180-530 85 85 Tsimshatsui Kowloon a Tel ( 49) 0-180-532 78 32 Hong Kong a 49) 0-180-532 93 58 Tel (852) 2737-1600 a Tel ( 49) 0-180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 ...

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