MC74HC151

High–Speed CMOS Logic Data

DL129 — Rev 6

3

MOTOROLA

Symbol

Parameter

VCC

V

Guaranteed Limit

Unit

Symbol

Parameter

VCC

V

– 55 to

25

_C

v 85_C

v 125_C

Unit

tPLH,

tPHL

Maximum Propagation Delay, Input D to Output Y or Y

(Figures 1, 3 and 6)

2.0

4.5

6.0

185

37

31

230

46

39

280

56

48

ns

tPLH,

tPHL

Maximum Propagation Delay, Input A to Output Y or Y

(Figures 2 and 6)

2.0

4.5

6.0

205

41

35

255

51

43

310

62

53

ns

tPLH,

tPHL

Maximum Propagation Delay, Strobe to Output Y or Y

(Figures 4, 5 and 6)

2.0

4.5

6.0

125

25

21

155

31

26

190

38

32

ns

tTLH,

tTHL

Maximum Output Transition Time, Any Output

(Figures 1 and 6)

2.0

4.5

6.0

75

15

13

95

19

16

110

22

19

ns

Cin

Maximum Input Capacitance

—

10

10

10

pF

NOTES:

1. For propagation delays with loads other than 50 pF, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).

2. Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).

CPD

Power Dissipation Capacitance (Per Package)*

Typical @ 25

°C, VCC = 5.0 V

pF

CPD

Power Dissipation Capacitance (Per Package)*

36

pF

* Used to determine the no–load dynamic power consumption: PD = CPD VCC2f + ICC VCC. For load considerations, see Chapter 2 of the

Motorola High–Speed CMOS Data Book (DL129/D).

PIN DESCRIPTIONS

INPUTS

D0, D1,

… , D7 (Pins 4, 3, 2, 1, 15, 14, 13, 12)

Data inputs. Data on any one of these eight binary inputs

may be selected to appear on the output.

CONTROL INPUTS

A0, A1, A2 (Pins 11, 10, 9)

Address inputs. The data on these pins are the binary ad-

dress of the selected input (see the Function Table).

Strobe (Pin 7)

Strobe. This input pin must be at a low level for the se-

lected data to appear at the outputs. If the Strobe pin is high,

the Y output is forced to a low level and the Y output is forced

to a high level.

OUTPUTS

Y, Y (Pins 5, 6)

Data outputs. The selected data is presented at these pins

in both true (Y output) and complemented (Y output) forms.