74AHC1G66 datasheet(8/17 Pages) NXP

8 / 17 page

74AHC_AHCT1G66_4

Product data sheet

Rev. 04 — 18 December 2008

8 of 17

NXP Semiconductors

74AHC1G66; 74AHCT1G66

Single-pole single-throw analog switch

[1]

All typical values are measured at VCC = 2.0 V, VCC = 3.3 V, VCC = 5.0 V and Tamb =25 °C.

[2]

tpd is the same as tPLH and tPHL.

ten is the same as tPZL and tPZH.

tdis is the same as tPLZ and tPHZ.

[3]

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

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

fi = input frequency in MHz;

fo = output frequency in MHz;

CL = output load capacitance in pF;

CSW = maximum switch capacitance in pF (see Table 7);

VCC = supply voltage in Volt;

Σ ((C

L × CSW) × VCC

× f

o) = sum of outputs.

11.1 Waveforms and test circuit

CPD

power

dissipation

capacitance

VI = GND to VCC

[3]

Table 9.

Dynamic characteristics …continued

Voltages are referenced to GND (ground = 0 V); CL = 50 pF; unless otherwise speciﬁed; For test circuit see Figure 10.

Symbol Parameter

Conditions

°C

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

Typ[1]

max

Max

Measurement points are given in Table 10.

Logic levels: VOL and VOH are typical output voltage levels that occur with the output load.

Fig 8.

Input (Y or Z) to output (Z or Y) propagation delays

mna667

tPLH

tPHL

Y or Z input

Z or Y output

GND

VOH

VOL

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