74LS14 六路施密特触发反向器

SN5414, SN54LS14, SN7414, SN74LS14 HEX SCHMITT-TRIGGER INVERTERSSDLS049B– DECEMBER 1983– REVISED FEBRUARY 2002

D D D

Operation From Very Slow Edges Improved Line-Receiving Characteristics High Noise Immunity

SN5414, SN54LS14 . . . J OR W PACKAGE SN7414 . . . D, N, OR NS PACKAGE SN74LS14 . . . D, DB, OR N PACKAGE (TOP VIEW)

descriptionEach circuit functions as an inverter, but because of the Schmitt action, it has different input threshold levels for positive-going (VT+) and negative-going (VT–) signals. These circuits are temperature compensated and can be triggered from the slowest of input ramps and still give clean, jitter-free output signals.

1A 1Y 2A 2Y 3A 3Y GND

1 2 3 4 5 6 7

14 13 12 11 10 9 8

VCC 6A 6Y 5A 5Y 4A 4Y

SN54LS14 . . . FK PACKAGE (TOP VIEW)

2A NC 2Y NC 3A

4 5 6 7 8

3 2 1 20 19 18 17 16 15 14 9 10 11 12 13

1Y 1A NC VCC 6A 6Y NC 5A NC 5YNC– No internal connection

ORDERING INFORMATIONTA PDIP– N PACKAGE Tube Tube Tube 0°C to 70°C SOIC– D Tape and reel Tube Tape and reel SOP– NS SSOP– DB Tape and reel Tape and reel Tube CDIP– J–55°C to 125°C CFP– W LCCC– FK Tube Tube Tube Tube Tube Tube ORDERABLE PART NUMBER SN7414N SN74LS14N SN7414D SN7414DR SN74LS14D SN74LS14DR SN7414NSR SN74LS14DBR SN5414J SNJ5414J SN54LS14J SNJ54LS14J SNJ5414W SNJ54LS14W SNJ54LS14FK TOP-SIDE MARKING SN7414N SN74LS14N 7414 LS14 SN7414 LS14 SN5414J SNJ5414J SN54LS14J SNJ54LS14J SNJ5414W SNJ54LS14W

SNJ54LS14FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at http://www.77cn.com.cn/sc/package. 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.Copyright 2002, Texas Instruments IncorporatedOn products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.

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

3Y GND NC 4Y 4A

SN5414, SN54LS14, SN7414, SN74LS14 HEX SCHMITT-TRIGGER INVERTERSSDLS049B– DECEMBER 1983– REVISED FEBRUARY 2002

logic diagram (positive logic)1A 1 2 1Y

2A

3

4

2Y

3A

5

6

3Y

4A

9

8

4Y

5A

11

10

5Y

6A Y=A

13

12

6Y

Pin numbers shown are for the D, DB, J, N, NS, and W packages.

2

POST OFFICE BOX 655303

DALLAS, TEXAS 75265

SN5414, SN54LS14, SN7414, SN74LS14 HEX SCHMITT-TRIGGER INVERTERSSDLS049B– DECEMBER 1983– REVISED FEBRUARY 2002

schematic’14 6 k 100 VCC

Output Y Input A

GND

’LS14 VCC 20 k

Output Y Input A

GND Resistor values shown are nominal

.

POST OFFICE BOX 655303

DALLAS, TEXAS 75265

SN5414, SN54LS14, SN7414, SN74LS14 HEX SCHMITT-TRIGGER INVERTERSSDLS049B– DECEMBER 1983– REVISED FEBRUARY 2002

absolute maximum ratings over operating free-air temperature (unless otherwise noted) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage:’14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V’LS14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Package thermal impedance,θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76°C/W Storage temperaturerange, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–65°C to 150°C 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. Voltage values are with respect to network ground terminal. 2. The package termal impedance is calculated in accordance with JESD 51-7

recommended operating conditionsSN5414 MIN VCC IOH IOL TA Supply voltage High-level output current Low-level output current Operating free-air temperature–55 4.5 NOM 5 MAX 5.5–0.8 16 125 0 MIN 4.75 SN7414 NOM 5 MAX 5.25–0.8 16 70 UNIT V mA mA°C

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)PARAMETER VT+ VT– Hysteresis (VT+– VT–) VIK VOH VOL IT+ IT– II IIH IIL IOS¶ ICCH VCC= 5 V VCC= 5 V VCC= 5 V VCC= MIN, VCC= MIN, VCC= MIN, VCC= 5 V, VCC= 5 V, VCC= MAX, VCC= MAX, VCC= MAX, VCC= MAX VCC= MAX VCC= MAX II=–12 mA VI= 0.6 V, VI= 2 V, VI= VT+ VI= VT– VI= 5.5 V VIH= 2.4 V VIL= 0.4 V–18 22 TEST CONDITIONS MIN 1.5 0.6 0.4 SN5414 SN7414 TYP§ 1.7 0.9 0.8–1.5 IOH=–0.8 mA IOL= 16 mA 2.4 3.4 0.2–0.43–0.56 1 40–0.8–1.2–55 36 60 0.4 MAX 2 1.1 V V V V V V mA mA mAµA mA mA mA mA UNIT

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