SN74LVC2G157DCT datasheet(24/27 Pages) TI1

Part #	SN74LVC2G157DCT

Description	Contains all support circuitry needed for the ADS1146/ADS1246

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Manufacturer	TI1 [Texas Instruments]

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Table 7. ADS1146EVM/ADS1246EVM Bill of Materials (continued)

Item No.

Qty

Value

Ref Des

Description

Vendor

Part Number

23

0

RA2

Resistor, Chip Array 4

Independent Bus 100k

Ω, 5%,

1/16W, SMD

24

1

10k

Ω

R1

Resistor, Thick Film Chip

Panasonic

ERJ-3GEYJ103V

10k

Ω, 5%, 1/10W, Size = 0603

25

1

2k

Ω

R2

Resistor, Thick Film Chip 2k

Ω,

Panasonic

ERJ-3EKF2001V

1%, 1/16W, Size = 0603

26

4

47

Ω

R3, R4, R7, R10

Resistor, Thick Film Chip 47

Ω,

Panasonic

ERJ-3GEYJ470V

5%, 1/10W, Size = 0603

27

2

2.7k

Ω

R5, R6

Resistor, Thick Film Chip

Panasonic

ERJ-3GEYJ272V

2.7k

Ω, 5%, 1/10W, Size =

0603

28

2

100k

Ω

R8, R13

Resistor, Thick Film Chip

Panasonic

ERJ-3GEYJ104V

100k

Ω, 5%, 1/10W, Size =

0603

29

1

47k

Ω

R11

Resistor, Thick Film Chip

Panasonic

ERJ-3GEYJ473V

47k

Ω, 5%, 1/10W, Size = 0603

30

2

0

R14, R15

Resistor, Thick Film Chip 0

Ω,

Panasonic

ERJ-3GEY0R00V

5%, 1/10W, Size = 0603

31

2

470k

Ω

R9, R12

Resistor, Thick Film Chip

Panasonic

ERJ-3GEYJ474V

470k

Ω, 5%, 1/10W, Size =

0603

32

1

S1

Switch, Mini Slide, SP3T

NKK

SS14MDP2

33

0

TP1, TP2, TP4

PCB Test Point, Mini Loop,

Through-Hole

34

1

TP3

PCB Test Point, Large Loop,

Keystone

5011

Through-Hole

Electronics

35

1

U1

Precision Voltage Reference,

Texas Instruments

REF5020ID

2.048V

36

1

U2

Precision Operational Amplifier

Texas Instruments

OPA227U

37

1

U3

Texas Instruments

PCA9535RGE

16-Bit I2C I/O Expander

38

1

U4

Inverter, Single Gate

Texas Instruments

SN74AHCT1G04DBVR

39

1

U5

Buffer, Open Drain, Single

Texas Instruments

SN74LVC1G07DBVRG

Gate

4

40

1

U6

LDO Voltage Regulator, 2.5V,

Texas Instruments

TPS79225DBVRG4

100mA

41

1

U7

Single, 2-Line to 1 Data

Texas Instruments

SN74LVC2G157DCT

Selector/Multiplexer

42

0

U8

3.3 V Oscillator

43

1

U9

LDO Voltage Regulator, 2.5V,

Texas Instruments

TPS72325DBVTG4

200mA

44

1

U10

Precision Delta-Sigma ADC,

Texas Instruments

ADS1246IPW/ADS114

24-bit/16-bit

6IPW

45

1

U11

EEPROM, 1.8V, 256k

Microchip

24AA256-I/ST

46

1

U12

Supervisor, 2.64V Threshold

Texas Instruments

TPS3836L30DBVT

47

8

N/A

Shorting Blocks

Samtec

SNT-100-BK-T

24

ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK

SBAU149A – June 2009 – Revised July 2009

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SN74LVC2G157DCT Datasheet(PDF) 24 Page - Texas Instruments

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