74HC147 datasheet(13/23 Pages) PHILIPS

tên linh kiện	74HC147

Giải thích chi tiết về linh kiện	10-to-4 line priority encoder

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nhà sản xuất	PHILIPS [NXP Semiconductors]

Trang chủ	http://www.nxp.com

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13 / 23 page

2003 Oct 30

Philips Semiconductors

Product speciﬁcation

Hex inverting Schmitt trigger

74HC14; 74HCT14

Type 74HCT

GND = 0 V; tr =tf = 6 ns; CL =50pF

Note

1. All typical values are measured at Tamb =25 °C.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

WAVEFORMS

VCC (V)

Tamb =25 °C; note 1

tPHL/tPLH

propagation delay nA to nY

see Fig.9

4.5

−

tTHL/tTLH

output transition time

see Fig.9

4.5

−

715

Tamb = −40 to +85 °C

tPHL/tPLH

propagation delay nA to nY

see Fig.9

4.5

−−

tTHL/tTLH

output transition time

see Fig.9

4.5

−−

Tamb = −40 to +125 °C

tPHL/tPLH

propagation delay nA to nY

see Fig.9

4.5

−−

tTHL/tTLH

output transition time

see Fig.9

4.5

−−

TRANSFER CHARACTERISTIC WAVEFORMS

MNA844

VT+

VT−

Fig.7 Transfer characteristic.

handbook, halfpage

MNA845

VT+

VT−

Fig.8 The definitions of VT+,VT− and VH.

VT+ and VT− are between limits of 20% and 70%.

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