Datasheet IDTQS3384SO, IDTQS3384Q, IDTQS3384PA Datasheet (Integrated Device Technology)

IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
10-BIT BUS SWITCH

FEA TURES:

• Enhanced N channel FET with no inherent diode to Vcc

ΩΩ

•5

Ω bidirectional switches connect inputs to outputs

ΩΩ

• Zero propagation delay, zero added ground bounce

• Undershoot clamp diodes on all switch and control inputs

• Two enables control five bits each

• Available in SOIC, QSOP, and TSSOP packages

APPLICA TIONS:

• Hot-swapping, hot-docking

• Voltage translation (5V to 3.3V)

• Power Conservation

• Capacitance reduction and isloation

• Bus Isolation

• Clock Gating

IDTQS3384

DESCRIPTION:

The QS3384 provides a set of ten high-speed CMOS, TTL-compatible
bus switches. The low ON resistance of QS3384 allows inputs to be
connected to outputs without adding propagation delay and without gener­ating additional ground bounce. Two banks of 5 switches are controlled by
independent Bus Enable (BE) signals.

The QS3384 is characterized for operation at -40°C to +85°C.

FUNCTIONAL BLOCK DIAGRAM

A0

A4

A5

A9

BEA

B0

B4

B5

B9

BEB

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

INDUSTRIAL TEMPERATURE RANGE

2000 Integrated Device Technology, Inc. DSC-5758/1c

FEBRUARY 2000

1

IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

PIN CONFIGURATION

BEA

B
A0
A1
B1
B2
A2
A3
B3
B4
A4

GND

1
2

0

3
4
5
6
7
8
9
10
11
12

SOIC/ QSOP/ TSSOP

TOP VIEW

24
23
22
21
20
19

18
17
16
15
14
13

CC

V
B9
A9
A8
B8
B7
A7
A6
B6
B5
A5
BEB

ABSOLUTE MAXIMUM RATINGS

Symbol Description Max Unit

(2)

VTERM
VTERM
VTERM
VAC AC Input Voltage (pulse width ≤20ns) – 3 V
IOUT DC Output Current 120 mA
PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W
T

STG Storage Temperature –65 to +150 °C

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
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.

2. VCC terminals.

3. All terminals except VCC .

Supply Voltage to Ground –0.5 to +7 V

(3)

DC Switch Voltage VS –0.5 to +7 V

(3)

DC Input Voltage VIN –0.5 to +7 V

(1)

CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)

Pins Typ. Max.

Control Inputs 3 5 pF

Quickswitch Channels (Switch OFF) 5 7 p F

NOTE:

1. This parameter is guaranteed but not production tested.

(1)

Unit

PIN DESCRIPTION

Pin Names I/ O Description

A0 - A9 I/O Bus A
B0 - B9 I/O Bus B

BEA, BEB I Bus Switch Enable

FUNCTION TABLE

BEA BEB B0 - A4 B5 - B9 Function

H H Hi-Z Hi-Z Disconnect

LH A0 - A4 Hi-Z Connect

H L Hi-Z A5 - A9 Connect

LLA

NOTE:

1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance

(1)

0 - A4 A5 - A9 Connect

2

IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5V ± 5%

Symbol Parameter Test Conditions Min. Typ.

VIH Input HIGH Voltage Guaranteed Logic HIGH for Control Pins 2 — — V
VIL Input LOW Voltage Guaranteed Logic LOW for Control Pins — — 0.8 V

IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC — ±0.01 ±1 µA

IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — ±0.01 ±1 µA

R

ON Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA — 5 7 Ω

VCC = Min., VIN = 2.4V, ION = 15mA — 10 15

VP Pass Voltage

(2)

VIN = VCC = 5V, IOUT = -5µA 3.7 4 4.2 V

(1)

Max. Unit

NOTES:

1. Typical values are at V

2. Pass voltage is guaranteed but not production tested.

CC = 5V and TA = 25°C.

TYPICAL ON RESIST ANCE vs VIN AT VCC = 5V

16
14

RON

(ohms)

12
10

8
6
4
2
0

0.0 0.5

1.0

1.5 2.0 2.5 3.0 3.5

VIN

(Volts)

3

IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

POWER SUPPLY CHARACTERISTICS

Symbol Parameter Test Conditions

ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 1.5 mA

∆ICC Power Supply Current per Input HIGH

ICCD Dynamic Power Supply Current per MHz

NOTES:

1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.

2. Per TTL-driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to ∆Icc.

3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant
AC or DC currents as they transition. This parameter is guaranteed but not production tested.

(2)

VCC = Max., VIN = 3.4V, f = 0 2.5 mA

(3)

VCC = Max., A and B Pins Open, Control Inputs Toggling @ 50% Duty Cycle 0.25 mA/MHz

(1)

Max. Unit

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

TA = -40°C to +85°C, VCC = 5V ± 5%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.

Symbol Parameter Min.

t

PLH Data Propagation Delay

(2)

tPHL Ax to Bx, Bx to Ax

PZL Switch Turn-On Delay 1.5  6.5 n s

t

tPZH BEA, BEB to Ax, Bx

tPLZ Switch Turn-Off Delay

t

PHZ BEA, BEB to Ax, Bx

NOTES:

1. Minimums are guaranteed but not production tested.

2. This parameter is guaranteed but not production tested.

3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone
is of the order of 0.25ns at CL = 50pF. 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
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.

(2)

(1)

0.25

Typ. Max. Unit

(3)

1.5  5.5 n s

ns

4

IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH

ORDERING INFORMATION

INDUSTRIAL TEMPERATURE RANGE

IDTQS

XXXXX

Device Type

XX

Package

SO
Q
PA

3384

Small Outline IC
Quarter Size Outline Package
Thin Small Size Outline Package

High Speed CMOS 10-Bit Bus Switch

CORPORATE HEADQUARTERS for SALES: for Tech Support:

2975 Stender Way 800-345-7015 or 408-727-6116 [e-mail]
Santa Clara, CA 95054 fax: [phone] [phone]

www.idt.com

5