SL74HC251D datasheet(4/5 Pages) SLS

4 / 5 page

SL74HC251

System Logic

Semiconductor

SLS

AC ELECTRICAL CHARACTERISTICS(C

L=50pF,Input t r=tf=6.0 ns)

VCC

Guaranteed Limit

Symbol

Parameter

°C to

-55

°C

≤85°C

≤125°C

Unit

tPLH, tPHL

Maximum Propagation Delay, Input D to

Output Y or Y (Figures 1,2 and 5)

2.0

4.5

6.0

185

230

280

tPLH, tPHL

Maximum Propagation Delay , Input A to

Output Y or Y (Figures 3 and 5)

2.0

4.5

6.0

205

255

310

tPLZ, tPHZ

Maximum Propagation Delay , Output Enable to

Output Y (Figures 4 and 6)

2.0

4.5

6.0

195

245

295

tPZL, tPZH

Maximum Propagation Delay , Output Enable to

Output Y (Figures 4 and 6)

2.0

4.5

6.0

145

180

220

tPLZ, tPHZ

Maximum Propagation Delay , Output Enable to

Output Y (Figures 4 and 6)

2.0

4.5

6.0

220

275

330

tPZL, tPZH

Maximum Propagation Delay , Output Enable to

Output Y (Figures 4 and 6)

2.0

4.5

6.0

150

190

225

tTLH, tTHL

Maximum Output Transition Time, Any Output

(Figures 1 and 6)

2.0

4.5

6.0

110

CIN

Maximum Input Capacitance

COUT

Maximum Three-State Output Capacitance

(Output in High-Impedance State)

Power Dissipation Capacitance (Per Package)

Typical @25

°C,V

CC=5.0 V

CPD

Used to determine the no-load dynamic power

consumption: PD=CPDVCC

2f+I

CCVCC

Figure 1. Switching Waveforms

Figure 2. Switching Waveforms

SL74HC251D Datasheet(PDF) 4 Page - System Logic Semiconductor

SL74HC251D Datasheet(HTML) 4 Page - System Logic Semiconductor

Html Pages

1 2 3 4 5

Datasheet Download

Link URL