Datasheet

74AHC_AHCT157_2 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 02 — 9 November 2007 6 of 16
NXP Semiconductors
74AHC157; 74AHCT157
Quad 2-input multiplexer
9. Static characteristics
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
For type 74AHC157
V
IH
HIGH-level
input voltage
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
= 5.5 V 3.85 - - 3.85 - 3.85 - V
V
IL
LOW-level
input voltage
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
= 5.5 V - - 1.65 - 1.65 - 1.65 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
I
O
= −50 µA; V
CC
= 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
I
O
= −50 µA; V
CC
= 3.0 V 2.9 3.0 - 2.9 - 2.9 - V
I
O
= −50 µA; V
CC
= 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
I
O
= −4.0 mA; V
CC
= 3.0 V 2.58 - - 2.48 - 2.40 - V
I
O
= −8.0 mA; V
CC
= 4.5 V 3.94 - - 3.8 - 3.70 - V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
I
O
= 50 µA; V
CC
= 2.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 50 µA; V
CC
= 3.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 50 µA; V
CC
= 4.5 V - 0 0.1 - 0.1 - 0.1 V
I
O
= 4.0 mA; V
CC
= 3.0 V - - 0.36 - 0.44 - 0.55 V
I
O
= 8.0 mA; V
CC
= 4.5 V - - 0.36 - 0.44 - 0.55 V
I
I
input leakage
current
V
I
= 5.5 V or GND;
V
CC
=0Vto5.5V
- - 0.1 - 1.0 - 2.0 µA
I
CC
supply current V
I
=V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
- - 4.0 - 40 - 80 µA
C
I
input
capacitance
- 3.0 10 - 10 - 10 pF
C
O
output
capacitance
- 4.0 - - - - - pF
For type 74AHCT157
V
IH
HIGH-level
input voltage
V
CC
= 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V
V
IL
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= −50 µA 4.4 4.5 - 4.4 - 4.4 - V
I
O
= −8.0 mA 3.94 - - 3.8 - 3.70 - V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 50 µA - 0 0.1 - 0.1 - 0.1 V
I
O
= 8.0 mA - - 0.36 - 0.44 - 0.55 V