Datasheet IDT74CVTLV3384 Datasheet (IDT)

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IDT74CBTLV3384
LOW-VOLTAGE 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

LOW-VOLTAGE 10-BIT
BUS SWITCH

FEA TURES:

ΩΩ

•5

Ω A/B bi-directional bus switch

ΩΩ

• Isolation under power-off conditions

• Over-voltage tolerant

• Latch-up performance exceeds 100mA

•VCC = 2.3V - 3.6V, Normal Range

• ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)

• Available in SSOP, QSOP and TSSOP packages

APPLICA TIONS:

• 3.3V High Speed Bus Switching and Bus Isolation

FUNCTIONAL BLOCK DIAGRAM

IDT74CBTLV3384

DESCRIPTION:

The CBTLV3384 is a ten bit high-speed bus switch with low on-state
resistance of the switch allowing connections to be made with minimal
propagation delay.

The device is organized as dual 5-bit bus switches with separate output­enable (OE) inputs, to allow use as two 5-bit bus switches or one 10-bit bus
switch. When OE is low, the associated 5-bit bus switch is on and A port is
connected to B port. When OE is high, the switch is open, and a high­impedance state exists between the two ports.

To ensure the high-impedance state during power up or power down,
OE should be tied to V
the resistor is determined by the current-sinking capability of the driver.

SIMPLIFIED SCHEMATIC, EACH SWITCH

CC through a pullup resistor; the minimum value of

1A1

1A5

1OE

2A1

2A5

2OE

3

11

1

14

22

13

SW

SW

SW

SW

2

1B1

10

1B5

A

15

2B1

OE

10

2B5

B

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

SEPTEMBER 2001INDUSTRIAL TEMPERATURE RANGE

1

© 2001 Integrated Device Technology, Inc. DSC-5742/4

IDT74CBTLV3384
LOW-VOLTAGE 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

PIN CONFIGURATION

1OE

1B1

1A1

1A2

1B2

1B3

1A3

1A4

1B4

1B5

1A

GND

5

1

2

3

4

5

6

7

8

9

10

11

12

SSOP/ QSOP/ TSSOP

TOP VIEW

24

23

22

21

20

19

18

17

16

15

14

13

VCC

2B

2A5

2A4

2B4

2B3

2A3

2A2

2B2

2B1

2A1

2OE

ABSOLUTE MAXIMUM RATINGS

Symbol Description Max Unit

VCC SupplyVoltage Range –0.5 to +4.6 V
VI Input Voltage Range –0.5 to +4.6 V

Continuous Channel Current 128 mA

5

IIK Input Clamp Current, VI/O < 0 –50 mA
T

STG Storage Temperature –65 to +150 °C

NOTE:

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.

FUNCTION TABLE

Input Inputs/Outputs

1OE 2OE 1B1 - 1B52B1 - 2B5

LL1A1 - 1A52A1 - 2A5

LH1A1 - 1A5 Z
HL Z2A1 - 2A5
HH Z Z

NOTE:

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

(1)

(1)

OPERATING CHARACTERISTICS, TA = 25°C

Symbol Parameter Test Conditions Min. Max. Unit

VCC Supply Voltage 2.3 3.6 V

V

IH High-Level Control Input Voltage VCC = 2.3V to 2.7V 1.7 — V

VCC = 2.7V to 3.6V 2 —

VIL Low-Level Control Input Voltage VCC = 2.3V to 2.7V — 0.7 V

VCC = 2.7V to 3.6V — 0.8

A Operating Free-Air Temperature −40 85 ° C

T

NOTE:

1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation.

(1)

2

IDT74CBTLV3384
LOW-VOLTAGE 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:
Operating Conditions: TA = –40°C to +85°C

Symbol Parameter Test Conditions Min. Typ. Max. Unit

VIK Control Inputs, Data I/O VCC = 3V, II = –18mA — — –1.2 V

II Control Inputs, Data I/O VCC = 3.6V, VI = VCC or GND — — ±1µA

IOZ Data I/O VCC = 3.6V, VO = 0 or 3.6V, switch disabled — — 5 µA

IOFF VCC = 0, VI or VO = 0 to 3.6V — — 50 µA

ICC VCC = 3.6V, IO = 0, VI = VCC or GND — — 10 µA

(1)

ΔICC

CI Control Inputs VI = 3V or 0 — 4 — pF

CIO(OFF) VO = 3V or 0, OE = VCC —7 —pF

ON

R

NOTES:

1. The increase in supply current is attributable to each current that is at the specified voltage level rather than VCC or GND.

2. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lower of the voltages
of the two (A or B ) terminals.

Control Inputs VCC = 3.6V, one input at 3V, other inputs at VCC or GND — — 300 µA

Max. at V

CC = 2.3V VI = 0 IO = 64mA — 5 8

Typ. at VCC = 2.5V IO = 24mA — 5 8

(2)

VI = 1.7V IO = 15mA — 27 40 Ω
V

I = 0 IO = 64mA — 5 7

VCC = 3V IO = 24mA — 5 7

VI = 2.4V IO = 15mA — 10 15

SWITCHING CHARACTERISTICS

VCC = 2.5V ± 0.2V VCC = 3.3V ± 0.3V

Symbol Parameter Min. Max. Min. Max. Unit

(1)

tPD

t

t

NOTE:

1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance driven by an ideal voltage source
(zero output impedance).

Propagation Delay − 0.15 − 0.25 ns
A to B or B to A

EN Output Enable Time 1 5 1 4.3 ns

OE to A or B

DIS Output Disable Time 1 5.5 1 5.5 n s

OE to A or B

3

IDT74CBTLV3384
LOW-VOLTAGE 10-BIT BUS SWITCH

INDUSTRIAL TEMPERATURE RANGE

TEST CIRCUITS AND WAVEFORMS

TEST CONDITIONS

Symbol VCC

(1)

= 3.3V±0.3V VCC

VLOAD 6 2 x Vcc V

VIH 3 Vcc V

VT 1.5 Vcc / 2 V

VLZ 300 150 mV

VHZ 300 150 mV

CL 50 30 pF

VCC

(1, 2)

Pulse
Generator

VIN

D.U.T.

RT

Test Circuits for All Outputs

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.

VOUT

(2)

= 2.5V±0.2V Unit

500Ω

500Ω

CL

VLOAD

Open

GND

SAME PHASE

INPUT TRANSITION

OUTPUT

OPPOSITE PHASE

INPUT TRANSITION

ENABLE

CONTROL

INPUT

OUTPUT

NORMALLY

OUTPUT

NORMALLY

LOW

HIGH

SWITCH

CLOSED

SWITCH

OPEN

Enable and Disable Times

tPLH

tPLH

Propagation Delay

tPZL

VLOAD/2

VT

tPZH

tPHZ

VT
0V

tPHL

tPHL

DISABLE

tPLZ

VIH
VT
0V

V

OH

VT
VOL

VIH
VT
0V

VIH
VT
0V

VLOAD/2
V

OL + VLZ

VOL

VOH
VOH -VHZ

0V

NOTES:

1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.

2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2.5ns.

SWITCH POSITION

Test Switch

tPLZ/tPZL VLOAD

tPHZ/tPZH GND

t

PD Open

4

IDT74CBTLV3384
LOW-VOLTAGE 10-BIT BUS SWITCH

ORDERING INFORMATION

INDUSTRIAL TEMPERATURE RANGE

IDT XX

CBTLV

XXX XX

Device TypeTemp. Range

Package

PY
Q
QG
PG
PGG

3384

74

Shrink Small Outline Package
Quarter-size Small Outline Package
QSOP - Green
Thin Shrink Small Outline Package
TSSOP - Green

Low-Voltage 10-Bit Bus Switch

–40°C to +85°C

CORPORATE HEADQUARTERS for SALES: for Tech Support:

6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 [e-mail]
San Jose, CA 95138 fax: [phone]

www.idt.com

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