74LS298

Manufacturer Part Number74LS298
DescriptionLOW POWER SCHOTTKY
ManufacturerON Semiconductor
74LS298 datasheet
 


1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
Page 1/8

Download datasheet (115Kb)Embed
Next
SN74LS298
Quad 2-Input Multiplexer
with Storage
The SN74LS298 is a Quad 2-Port Register. It is the logical
equivalent of a quad 2-input multiplexer followed by a quad 4-bit
edge-triggered register. A Common Select input selects between two
4-bit input ports (data sources.) The selected data is transferred to the
output register synchronous with the HIGH to LOW transition of the
Clock input.
The LS298 is fabricated with the Schottky barrier process for high
speed and is completely compatible with all ON Semiconductor TTL
families.
Select From Two Data Sources
Fully Edge-Triggered Operation
Typical Power Dissipation of 65 mW
Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
V
Supply Voltage
4.75
CC
T
Operating Ambient
A
Temperature Range
I
Output Current – High
OH
I
Output Current – Low
OL
Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 6
Typ
Max
Unit
5.0
5.25
V
0
25
70
C
– 0.4
mA
8.0
mA
Device
SN74LS298N
SN74LS298D
1
http://onsemi.com
LOW
POWER
SCHOTTKY
16
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
ORDERING INFORMATION
Package
Shipping
16 Pin DIP
2000 Units/Box
16 Pin
2500/Tape & Reel
Publication Order Number:
SN74LS298/D

74LS298 Summary of contents

  • Page 1

    ... SN74LS298 Quad 2-Input Multiplexer with Storage The SN74LS298 is a Quad 2-Port Register the logical equivalent of a quad 2-input multiplexer followed by a quad 4-bit edge-triggered register. A Common Select input selects between two 4-bit input ports (data sources.) The selected data is transferred to the output register synchronous with the HIGH to LOW transition of the Clock input ...

  • Page 2

    ... SN74LS298 CONNECTION DIAGRAM DIP (TOP VIEW PIN NAMES S Common Select Input CP Clock (Active LOW Going Edge) Input I – I Data Inputs from Source – I ...

  • Page 3

    ... L = LOW Voltage Level H = HIGH Voltage Level X = Don’t Care I = LOW Voltage Level one setup time prior to the HIGH to LOW clock transition HIGH Voltage Level one setup time prior to the HIGH to LOW clock transition. SN74LS298 LOGIC OR BLOCK DIAGRAM ...

  • Page 4

    ... LOW to HIGH in order to be recognized and transferred to the outputs. HOLD TIME (t ) — is defined as the minimum time h following the clock transition from LOW to HIGH that the SN74LS298 (unless otherwise specified) Limits Min Typ Max Unit 2 ...

  • Page 5

    ... 1 h(L) t s(L) t W(L) CP 1 PHL PLH Q 1.3 V *The shaded areas indicate when the input is permitted to *change for predictable output performance. Figure 1. SN74LS298 AC WAVEFORMS s(H) s(L) CP 1 http://onsemi.com 5 1 s(H) 1 Figure 2. ...

  • Page 6

    ... SEATING –T– PLANE 0.25 (0.010 SN74LS298 N SUFFIX PLASTIC PACKAGE CASE 648–08 ISSUE R NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. ...

  • Page 7

    ... G K –T– SEATING PLANE 0.25 (0.010 SN74LS298 PACKAGE DIMENSIONS D SUFFIX PLASTIC SOIC PACKAGE CASE 751B–05 ISSUE 0.25 (0.010 http://onsemi.com 7 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14 ...

  • Page 8

    ... Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549 Phone: 81–3–5487–8345 Email: r14153@onsemi.com Fax Response Line: 303–675–2167 800–344–3810 Toll Free USA/Canada ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 8 SN74LS298/D ...