Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Multiplexer Multiplexer Single supply TSSOP 16

 

 

  

SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D 3-State Version of ’HC151

D Wide Operating Voltage Range of 2 V to 6 V

D High-Current 3-State Outputs Interface

Directly With System Bus or Can Drive Up

To 15 LSTTL Loads

D Low Power Consumption, 80-µA Max I

D Typical t

= 9 ns

D ±6-mA Output Drive at 5 V

D Low Input Current of 1 µA Max

D Perform Parallel-to-Serial Conversion

D Complementary Outputs Provide True and

Inverted Data

description/ordering information

These data selectors/multiplexers contain full

binary decoding to select 1-of-8 data sources and

feature strobe-controlled complementary 3-state

outputs.

The 3-state outputs can interface with and drive

data lines of bus-organized systems. With all but

one of the common outputs disabled (in the

high-impedance state), the low impedance of the

single enabled output drives the bus line to a high

or low logic level. Both outputs are controlled by

the output-enable (OE

) input. The outputs are

disabled when OE

is high.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N Tube of 25 SN74HC251N SN74HC251N

Tube of 40 SN74HC251D

SOIC − D

Reel of 2500 SN74HC251DR

HC251

SOIC − D

Reel of 250 SN74HC251DT

HC251

−40°C to 85°C

SOP − NS Reel of 2000 SN74HC251NSR HC251

−40 C to 85 C

SSOP − DB Reel of 2000 SN74HC251DBR HC251

Tube of 90 SN74HC251PW

TSSOP − PW

Reel of 2000 SN74HC251PWR

HC251

TSSOP − PW

Reel of 250 SN74HC251PWT

HC251

CDIP − J Tube of 25 SNJ54HC251J SNJ54HC251J

−55°C to 125°C

CFP − W Tube of 150 SNJ54HC251W SNJ54HC251W

−55 C to 125 C

LCCC − FK Tube of 55 SNJ54HC251FK SNJ54HC251FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

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

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

SN54HC251 ...J OR W PACKAGE

SN74HC251 . . . D, DB, N, NS, OR PW PACKAGE

(TOP VIEW)

3212019

910111213

SN54HC251 . . . FK PACKAGE

(TOP VIEW)

GND

NC − No internal connection

  !"# $ %&'# "$  (&)*%"# +"#',

+&%#$ %! # $('%%"#$ (' #-' #'!$  '."$ $#&!'#$

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#'$#1  "** (""!'#'$,

 (+&%#$ %!(*"# # 23 "** (""!'#'$ "' #'$#'+

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(%'$$1 +'$ # '%'$$"*0 %*&+' #'$#1  "** (""!'#'$,

Summary of content (23 pages)

PAGE 1
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 D 3-State Version of ’HC151 D Wide Operating Voltage Range of 2 V to 6 V D High-Current 3-State Outputs Interface D D D D D D SN54HC251 . . . J OR W PACKAGE SN74HC251 . . .
PAGE 2
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 FUNCTION TABLE OUTPUTS INPUTS SELECT OE Y W C B A X X X H Z Z L L L L D0 D0 L L H L D1 D1 L H L L D2 D2 L H H L D3 D3 H L L L D4 D4 H L H L D5 D5 H H L L D6 D6 H H H L D7 D7 D0, D1 . . .
PAGE 3
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 logic diagram (positive logic) OE A B C D0 D1 D2 7 11 10 9 4 TG 3 TG 2 TG 5 D3 D4 TG 15 TG 6 D5 D6 D7 Y 1 14 W TG 13 TG 12 TG Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
PAGE 4
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 5
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = −20 µA VOH VI = VIH or VIL IOH = −6 mA IOH = −7.8 mA IOL = 20 µA VOL VI = VIH or VIL IOL = 6 mA IOL = 7.
PAGE 6
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER SN54HC251 SN74HC251 TO (OUTPUT) VCC 2V 72 300 450 375 A, B, or C W or Y 4.5 V 25 60 90 75 6V 22 52 77 65 2V 59 300 450 375 4.
PAGE 7
SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 PARAMETER MEASUREMENT INFORMATION VCC PARAMETER Test Point From Output Under Test tPZH S1 ten RL CL (see Note A) 1 kΩ tPZL tPHZ tdis S2 RL tPLZ tpd or tt 1 kΩ −− LOAD CIRCUIT CL S1 S2 50 pF or 150 pF Open Closed Closed Open Open Closed Closed Open Open Open 50 pF 50 pF or 150 pF VCC Input 50% 50% 0V tPLH In-Phase Output 50% 10% tPHL 90% VOH 50% 10% V OL tf 9
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.
PAGE 9
PACKAGE OPTION ADDENDUM www.ti.
PAGE 10
PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74HC251DBR Package Package Pins Type Drawing SSOP SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DB 16 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.0 Q1 SN74HC251DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 SN74HC251PWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HC251DBR SSOP DB 16 2000 367.0 367.0 38.0 SN74HC251DR SOIC D 16 2500 333.2 345.9 28.6 SN74HC251PWR TSSOP PW 16 2000 367.0 367.0 35.0 SN74HC251PWT TSSOP PW 16 250 367.0 367.0 35.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
PAGE 23
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.