74AHC_AHCT374_3

Product data sheet

Rev. 03 — 12 June 2008

9 of 17

Nexperia

74AHC374; 74AHCT374

Octal D-type flip-flop; positive edge-trigger; 3-state

[1]

Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).

[2]

tpd is the same as tPLH and tPHL.

[3]

ten is the same as tPZH and tPZL.

[4]

tdis is the same as tPHZ and tPLZ.

[5]

CPD is used to determine the dynamic power dissipation (PD in µW).

PD =CPD × VCC2 × fi × N+ Σ(CL × VCC2 × fo) where:

fi = input frequency in MHz;

fo = output frequency in MHz;

CL = output load capacitance in pF;

VCC = supply voltage in V;

N = number of inputs switching;

Σ(CL × VCC2 × fo) = sum of the outputs.

th

hold time

Dn to CP; see Figure 8

VCC = 3.0 V to 3.6 V

2.0

-

-

2.0

-

2.0

-

ns

VCC = 4.5 V to 5.5 V

2.0

-

-

2.0

-

2.0

-

ns

CPD

power

dissipation

capacitance

fi = 1 MHz; VI = GND to VCC

[5]

-10

-

-

-

-

-

pF

74AHCT374; VCC = 4.5 V to 5.5 V

tpd

propagation

delay

CP to Qn; see Figure 6 and

Figure 8

[2]

CL = 15 pF

-

4.3

9.4

1.0

10.5

1.0

12.0

ns

CL = 50 pF

-

5.6

10.4

1.0

11.5

1.0

13.0

ns

ten

enable time

OE to Qn; see Figure 7

[3]

CL = 15 pF

-

3.5

10.2

1.0

11.5

1.0

13.0

ns

CL = 50 pF

-

4.8

11.2

1.0

12.5

1.0

14.0

ns

tdis

disable time OE to Qn; see Figure 7

[4]

CL = 15 pF

-

3.6

10.2

1.0

11.0

1.0

13.0

ns

CL = 50 pF

-

5.7

11.2

1.0

12.0

1.0

14.0

ns

fmax

maximum

frequency

see Figure 6

CL = 15 pF

90

140

-

80

-

80

-

MHz

CL = 50 pF

85

130

-

75

-

75

-

MHz

tW

pulse width

CP HIGH or LOW;

see Figure 6

6.5

-

-

6.5

-

6.5

-

ns

tsu

set-up time

Dn to CP; see Figure 8

2.5

-

-

2.5

-

2.5

-

ns

th

hold time

Dn to CP; see Figure 8

2.5

-

-

2.5

-

2.5

-

ns

CPD

power

dissipation

capacitance

fi = 1 MHz; VI = GND to VCC

[5]

-12

-

-

-

-

-

pF

Table 7.

Dynamic characteristics …continued

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9.

Symbol Parameter

Conditions

25

°C

−40 °C to +85 °C −40 °C to +125 °C Unit

Min

Typ[1] Max

Min

Max

Min

Max

© Nexperia B.V. 2017. All rights reserved