74HC_HCT4851_2 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 02 — 2 September 2008 7 of 20
NXP Semiconductors
74HC4851; 74HCT4851
8-channel analog MUX/DEMUX with injection-current effect control
[1] Typical values are measured at T
amb
=25°C.
[2] ∆V
O
here is the maximum variation of output voltage of an enabled analog channel when current is injected into any disabled channel.
[3] I
SW
= total current injected into all disabled channels.
Table 7. Injection current coupling
At recommended operating conditions; voltages are referenced to GND (ground 0 V); For test circuit see Figure 9.
Symbol Parameter Conditions 74HC4851 74HCT4851 Unit
Min Typ
[1]
Max Min Typ
[1]
Max
T
amb
= −40 °C to +125 °C
∆V
O
output voltage
variation
|I
SW
|≤ 1 mA; R
S
≤ 3.9 kΩ
[2][3]
V
CC
= 3.3 V - 0.05 1 - - - mV
V
CC
= 5.0 V - 0.03 1 - 0.03 1 mV
|I
SW
|≤10 mA; R
S
≤ 3.9 kΩ
V
CC
= 3.3 V - 0.55 5 - - - mV
V
CC
= 5.0 V - 0.27 5 - 0.27 5 mV
|I
SW
|≤ 1 mA; R
S
≤ 20 kΩ
V
CC
= 3.3 V - 0.04 2 - - - mV
V
CC
= 5.0 V - 0.03 2 - 0.03 2 mV
|I
SW
|≤ 10 mA; R
S
≤ 20 kΩ
V
CC
= 3.3 V - 0.56 20 - - - mV
V
CC
= 5.0 V - 0.48 20 - 0.48 20 mV
Table 8. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground 0 V);
25 °C −40 °C to +85 °C −40 °C to +125 °C
Symbol Parameter Conditions Min Typ Max Min Max Min Max Unit
74HC4851
V
IH
HIGH-level
input
voltage
control inputs
V
CC
= 2.0 V 1.5 - - 1.5 - 1.5 - V
V
CC
= 3.0 V 2.1 - - 2.1 - 2.1 - V
V
CC
= 3.3 V 2.3 - - 2.3 - 2.3 - V
V
CC
= 4.5 V 3.15 - - 3.15 - 3.15 - V
V
CC
= 6.0 V 4.2 - - 4.2 - 4.2 - V
V
IL
LOW-level
input
voltage
control inputs
V
CC
= 2.0 V - - 0.5 - 0.5 - 0.5 V
V
CC
= 3.0 V - - 0.9 - 0.9 - 0.9 V
V
CC
= 3.3 V - - 1.0 - 1.0 - 1.0 V
V
CC
= 4.5 V - - 1.35 - 1.35 - 1.35 V
V
CC
= 6.0 V - - 1.8 - 1.8 - 1.8 V
I
I
input
leakage
current
control inputs;
V
I
= GND or V
CC
V
CC
= 6.0 V - - ±0.1 - ±0.1 - ±1.0 µA
