QS3244QG Integrated Device Technology (Idt), QS3244QG Datasheet

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QS3244QG

Manufacturer Part Number
QS3244QG
Description
Bus Switch 2-Element 4-IN 20-Pin QSOP Tube
Manufacturer
Integrated Device Technology (Idt)
Datasheet

Specifications of QS3244QG

Package
20QSOP
Configuration
4 x 1:1
Logic Function
Bus Switch
Number Of Elements Per Chip
2
Number Of Outputs Per Chip
8
Typical Operating Supply Voltage
5 V
Maximum On Resistance
10(Typ) Ohm
Maximum High Level Output Current
-120 mA
Maximum Low Level Output Current
120 mA
Maximum Operating Supply Voltage
5.25 V
Minimum Operating Supply Voltage
4.75 V
Maximum Propagation Delay Time @ Maximum Cl
0.25@5V ns

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
QS3244QG
Manufacturer:
DS
Quantity:
12 733
Part Number:
QS3244QG8
Manufacturer:
IDT
Quantity:
8 000
Company:
Part Number:
QS3244QG8
Quantity:
1 864
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
• 5Ω Ω Ω Ω Ω bidirectional switches connect inputs to outputs
• Pin compatible with 74F244, 74FCT244, and 74FCT244T
• Zero propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
• Available in QSOP, SOIC, and TSSOP packages
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Power conservation
• Capacitance reduction and isolation
• Logic replacement (data processing)
• Clock gating
• Bus switching and isolation
FUNCTIONAL BLOCK DIAGRAM
INDUSTRIAL TEMPERATURE RANGE
IDTQS3244
HIGH-SPEED CMOS QUICKSWITCH 8-BIT BUS SWITCH
c
1A
1A
1A
1A
2011 Integrated Device Technology, Inc.
1G
1
2
3
4
QUICKSWITCH
HIGH-SPEED CMOS
QUICKSWITCH
8-BIT BUS SWITCH
1Y
1Y
1Y
1Y
1
2
3
4
1
®
DESCRIPTION:
bus switches in a pinout compatible with 74FCT244, 74F244, 74ALS/AS/
LS244 8-bit drivers. The low ON resistance (5Ω) of the 3244 allows inputs
to be connected to outputs without adding propagation delay and without
generating additional ground bounce noise. The two enable (xG) signals
turn the switches on similar to the xG signals of the 74’244.
conventional logic devices.
The QS3244 provides a set of eight high-speed CMOS TTL-compatible
QuickSwitch devices provide an order of magnitude faster speed than
PRODUCTS
The QS3244 is characterized for operation at -40°C to +85°C.
2A
2A
2A
2A
2G
1
2
3
4
INDUSTRIAL TEMPERATURE RANGE
FEBRUARY 2011
IDTQS3244
2Y
2Y
2Y
2Y
1
2
3
4
DSC-5722/9

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QS3244QG Summary of contents

Page 1

... BUS SWITCH DESCRIPTION: The QS3244 provides a set of eight high-speed CMOS TTL-compatible bus switches in a pinout compatible with 74FCT244, 74F244, 74ALS/AS/ LS244 8-bit drivers. The low ON resistance (5Ω) of the 3244 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The two enable (xG) signals turn the switches on similar to the xG signals of the 74’ ...

Page 2

... IDTQS3244 HIGH-SPEED CMOS QUICKSWITCH 8-BIT BUS SWITCH PIN CONFIGURATION GND QSOP/ SOIC/ TSSOP TOP VIEW ABSOLUTE MAXIMUM RATINGS Symbol V (2) TERM V (3) TERM (3) TERM OUT MAX T STG NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation ...

Page 3

... IDTQS3244 HIGH-SPEED CMOS QUICKSWITCH 8-BIT BUS SWITCH DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial –40°C to +85° ± Symbol Parameter V Input HIGH Voltage IH V Input LOW Voltage IL I Input Leakage Current (Control Inputs Off-State Current (Hi-Z) ...

Page 4

... Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the L system. Propagation delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. ...

Page 5

... Tape and Reel QG Quarter Size Outline Package - Green SOG Small Outline IC - Green PAG Thin Shrink Small Outline Package - Green 3244 High Speed CMOS Quickswitch 8-Bit Bus Switch for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 5 INDUSTRIAL TEMPERATURE RANGE for Tech Support: logichelp@idt.com ...

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