SN74CBT16292DGV [TI]

12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER WITH INTERNAL PULLDOWN RESISTORS; 12位1 - OF- 2 FET复用器/解复用器具有内部下拉电阻


型号：	SN74CBT16292DGV
厂家：	TEXAS INSTRUMENTS
描述：	12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER WITH INTERNAL PULLDOWN RESISTORS 12位1 - OF- 2 FET复用器/解复用器具有内部下拉电阻解复用器
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SN74CBT16292

12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER

WITH INTERNAL PULLDOWN RESISTORS

SCDS053C – MARCH 1998 – REVISED FEBRUARY 1999

DGG, DGV, OR DL PACKAGE

4-Ω Switch Connection Between Two Ports

(TOP VIEW)

TTL-Compatible Control Input Levels

Make-Before-Break Feature

GND

Internal 500-Ω Pulldown Resistors to

Ground

1B1

1B2

2B1

2B2

3B1

GND

3B2

4B1

4B2

5B1

5B2

6B1

6B2

7B1

7B2

8B1

GND

8B2

9B1

9B2

10B1

10B2

11B1

11B2

12B1

12B2

Latch-Up Performance Exceeds 250 mA Per

JESD 17

Package Options Include Plastic Thin

Shrink Small-Outline (DGG), Thin Very

Small-Outline (DGV), and 300-mil Shrink

Small-Outline (DL) Packages

description

The SN74CBT16292 is a 12-bit 1-of-2 high-speed

TTL-compatible FET multiplexer/ demultiplexer.

The low on-state resistance of the switch allows

connections to be made with minimal propagation

delay.

When the select (S) input is low, port A is

GND

10A

11A

12A

connectedtoportB1andR

isconnectedtoport

INT

B2. When S is high, port A is connected to port B2

and R is connected to port B1.

INT

The SN74CBT16292 is characterized for

operation from –40°C to 85°C.

NC – No internal connection

FUNCTION TABLE

INPUT

FUNCTION

A port = B1 port

= B2 port

INT

A port = B2 port

= B1 port

INT

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN74CBT16292

12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER

WITH INTERNAL PULLDOWN RESISTORS

SCDS053C – MARCH 1998 – REVISED FEBRUARY 1999

logic diagram (positive logic)

1B1

INT

1B2

12A

12B1

INT

12B2

†

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V

Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V

Continuous channel current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA

Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA

Package thermal impedance, θ (see Note 2): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81°C/W

DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W

DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74°C/W

Storage temperature range, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C

stg

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN74CBT16292

12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER

WITH INTERNAL PULLDOWN RESISTORS

SCDS053C – MARCH 1998 – REVISED FEBRUARY 1999

recommended operating conditions (see Note 3)

MIN

MAX

UNIT

Supply voltage

5.5

High-level control input voltage

Low-level control input voltage

Operating free-air temperature

0.8

–40

°C

NOTE 3: All unused control inputs of the device must be held at V

or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

†

PARAMETER

TEST CONDITIONS

I = –18 mA

MIN TYP

MAX

–1.2

±5

UNIT

= 4.5 V,

= 5.5 V,

V = V

or GND

µA

= 0,

V = V

or GND

‡

∆I

Control input

One input at 3.4 V,

Other inputs at V

or GND

2.5

V = 3 V or 0

= 0,

V = 3 V or 0

= 4 V,

V = 2.4 V,

I = 15 mA

TYP at V

= 4 V

I = 64 mA

Ω

V = 0

= 4.5 V

I = 30 mA

V = 2.4 V,

I = 15 mA

†

‡

All typical values are at V

= 5 V (unless otherwise noted), T = 25°C.

This is the increase in supply current for each input that is at the specified TTL voltage level rather than V

or GND.

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.

switching characteristics over recommended operating free-air temperature range, C = 50 pF

(unless otherwise noted) (see Figure 1)

= 5 V

± 0.5 V

= 4 V

FROM

(INPUT)

(OUTPUT)

PARAMETER

UNIT

MIN

MAX

MIN

MAX

0.25

A or B

B or A

A or B

0.5

6.8

dis

6.3

Thepropagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when

driven by an ideal voltage source (zero output impedance).

switching characteristics over recommended operating free-air temperature range, C = 50 pF

(unless otherwise noted) (see Figure 1)

V = 5 V

± 0.5 V

= 4 V

PARAMETER

DESCRIPTION

UNIT

MIN

MAX

MIN

MAX

Make-before-break time

mbb

The make-before-break time is the time interval between make and break, during the transition from one selected port to the other.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN74CBT16292

12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER

WITH INTERNAL PULLDOWN RESISTORS

SCDS053C – MARCH 1998 – REVISED FEBRUARY 1999

PARAMETER MEASUREMENT INFORMATION

7 V

Open

TEST

500 Ω

Open

7 V

From Output

Under Test

PZL PLZ

GND

Open

PZH PHZ

= 50 pF

500 Ω

(see Note A)

3 V

0 V

Output

Control

1.5 V

LOAD CIRCUIT

PLZ

PZL

Output

Waveform 1

S1 at 7 V

2.3 V

3 V

0 V

1.2 V

Input

1.5 V

+ 0.3 V

(see Note B)

PLH

PHL

PZH

PHZ

Output

Waveform 2

S1 at Open

(see Note B)

2.3 V

0 V

– 0.3 V

1.2 V

Output

1.5 V

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

C includes probe and jig capacitance.

ENABLE AND DISABLE TIMES

NOTES: A.

B. Waveform 1 is for an output with internal conditions such that the output is low except when connected to the internal 500-Ω

pulldown resistor. Waveform 2 is for an output with internal conditions such that the output is high except when connected to the

internal 500-Ω pulldown resistor.

C. All pulse inputs and DC inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω,

t ≤ 2.5 ns, t ≤ 2.5 ns.

D. The outputs are measured one at a time with one transition per measurement.

and t

are the same as t . Z = R

dis

= 500 Ω

PLZ

PZL

PLH

PHZ

PZH

PHL

INT

are the same as t . Z = R

are the same as t .

Figure 1. Load Circuit and Voltage Waveforms

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

IMPORTANT NOTICE

Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue

any product or service without notice, and advise customers to obtain the latest version of relevant information

to verify, before placing orders, that information being relied on is current and complete. All products are sold

subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those

pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent

TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily

performed, except those mandated by government requirements.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF

DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL

APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR

WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER

CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO

BE FULLY AT THE CUSTOMER’S RISK.

In order to minimize risks associated with the customer’s applications, adequate design and operating

safeguards must be provided by the customer to minimize inherent or procedural hazards.

TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent

that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other

intellectual property right of TI covering or relating to any combination, machine, or process in which such

semiconductor products or services might be or are used. TI’s publication of information regarding any third

party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.

SN74CBT16292DGV [TI]

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