74HC4351 datasheet(13/17 Pages) PHILIPS

13 / 17 page

December 1990

Philips Semiconductors

Product speciﬁcation

8-channel analog multiplexer/demultiplexer

with latch

74HC/HCT4351

ADDITIONAL AC CHARACTERISTICS FOR 74HC/HCT

Recommended conditions and typical values

GND = 0 V; Tamb =25 °C

Notes to AC characteristics

1. Adjust input voltage Vis to 0 dBm level (0 dBm = 1 mW into 600 Ω).

2. Adjust input voltage Vis to 0 dBm level at Vos for 1 MHz (0 dBm = 1 mW into 50 Ω).

Vis is the input voltage at a Yn or Z terminal, whichever is assigned as an input.

Vos is the output voltage at a Yn or Z terminal, whichever is assigned as an output.

SYMBOL

PARAMETER

typ.

UNIT

VCC

(V)

VEE

(V)

Vis(p−p)

(V)

CONDITIONS

sine-wave distortion

f = 1 kHz

0.04

0.02

2.25

4.5

−2.25

−4.5

4.0

8.0

RL = 10 kΩ; CL = 50 pF

(see Fig.14)

sine-wave distortion

f = 10 kHz

0.12

0.06

2.25

4.5

−2.25

−4.5

4.0

8.0

RL = 10 kΩ; CL = 50 pF

(see Fig.14)

switch “OFF” signal

feed-through

−50

2.25

4.5

−2.25

−4.5

note 1

RL = 600 Ω; CL = 50 pF

(see Figs 12 and 15)

V(p−p)

crosstalk voltage between

control and any switch

(peak-to-peak value)

120

220

4.5

−4.5

RL = 600 Ω; CL = 50 pF;

f = 1 MHz (E1, E2 or Sn,

square-wave between VCC

and GND, tr =tf = 6 ns)

(see Fig.16)

fmax

minimum frequency response

(

−3dB)

160

170

MHz

2.25

4.5

−2.25

−4.5

note 2

RL =50 Ω; CL = 10 pF

(see Figs 13 and 14)

maximum switch capacitance

independent (Y)

common

(Z)

Fig.12 Typical switch “OFF” signal feed-through as a function of frequency.

Test conditions:

VCC = 4.5 V; GND = 0 V; VEE = −4.5 V;

RL =50 Ω; Rsource =1 kΩ.

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