74AHCT2G32 datasheet(9/16 Pages) PHILIPS

9 / 16 page

9397 750 12532

Product data sheet

Rev. 01 — 23 February 2004

9 of 16

Philips Semiconductors

74AHC2G32; 74AHCT2G32

Dual 2-input OR gate

12. Dynamic characteristics

[1]

Typical values are measured at VCC = 3.3 V.

[2]

Typical values are measured at VCC = 5.0 V.

[3]

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 Volts;

N = total load switching outputs;

Σ(C

L × VCC

× f

o) = sum of the outputs.

[4]

The condition is VI = GND to VCC.

Table 10:

Dynamic characteristics type 74AHC2G32

At recommended operating conditions; voltages are referenced to GND (ground = 0 V); tr = tf ≤ 3.0 ns; see Figure 6.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Tamb = 25 °C

tPHL, tPLH

propagation delay

nA and nB to nY

see Figure 5

VCC = 3.0 V to 3.6 V; CL =15pF

[1] -

4.4

7.9

VCC = 4.5 V to 5.5 V; CL =15pF

[2] -

3.2

5.5

VCC = 3.0 V to 3.6 V; CL = 50 pF

6.3

11.4

VCC = 4.5 V to 5.5 V; CL = 50 pF

4.6

7.5

CPD

power dissipation

capacitance

CL = 50 pF; fi = 1 MHz

[3] [4] -16

Tamb = −40 °C to +85 °C

tPHL, tPLH

propagation delay

nA and nB to nY

see Figure 5

VCC = 3.0 V to 3.6 V; CL = 15 pF

1.0

9.5

VCC = 4.5 V to 5.5 V; CL = 15 pF

1.0

6.5

VCC = 3.0 V to 3.6 V; CL = 50 pF

1.0

13.0

VCC = 4.5 V to 5.5 V; CL = 50 pF

1.0

8.5

Tamb = −40 °C to +125 °C

tPHL, tPLH

propagation delay

nA and nB to nY

see Figure 5

VCC = 3.0 V to 3.6 V; CL = 15 pF

1.0

10.0

VCC = 4.5 V to 5.5 V; CL = 15 pF

1.0

7.0

VCC = 3.0 V to 3.6 V; CL = 50 pF

1.0

14.5

VCC = 4.5 V to 5.5 V; CL = 50 pF

1.0

9.5

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