74AHC_AHCT1G66_4

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 04 — 18 December 2008

6 of 17

NXP Semiconductors

74AHC1G66; 74AHCT1G66

Single-pole single-throw analog switch

10.2 ON resistance

[1]

At supply voltages approaching 2 V, the analog switch ON resistance becomes extremely non-linear. Therefore it is recommended that

these devices be used to transmit digital signals only, when using this supply voltage.

10.3 ON resistance test circuit and graphs

Table 8.

ON resistance

At recommended operating conditions; voltages are referenced to GND (ground 0 V); for graph see Figure 7 [1]

.

Symbol

Parameter

Conditions

25

°C

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

Typ

max

Max

Max

74AHC1G66 and 74AHCT1G66

(peak)

148[1]

--

-

Ω

28

50

70

110

Ω

15

30

40

60

Ω

ON resistance

(rail)

30

-

-

-

Ω

20

50

65

90

Ω

15

22

26

40

Ω

28

-

-

-

Ω

18

50

65

90

Ω

13

22

26

40

Ω

Fig 6.

Test circuit for measuring ON resistance

Fig 7.

Typical ON resistance as a function of

input voltage

001aag490

VI

GND

Z

Y

E

ISW

0246

(

Ω)

40

30

10

0

20

mna630

4.5 V

5.5 V