AC Electrical Characteristics
Symbol
Parameter
TA = –40°C to +85°C, CL = 30 pF, RL = 500Ω
VCCB = 1.65V to 1.95V, VCCB = 1.65V to 1.95V, VCCB = 2.3V to 2.7V,
VCCA = 2.3V to 2.7V VCCA = 3.0V to 3.6V VCCA = 3.0V to 3.6V
Min.
Max.
Min.
Max.
Min.
Max.
Units
tPHL, tPLH Propagation Delay,
1.5
5.8
1.5
6.2
0.8
4.4
ns
A to B
tPHL, tPLH Propagation Delay,
0.8
5.5
0.6
5.1
0.6
4.0
ns
B to A
tPZL, tPZH Output Enable Time,
1.5
8.3
1.5
8.2
0.8
4.6
ns
OE to B
tPZL, tPZH Output Enable Time,
0.8
5.3
0.6
5.1
0.6
4.0
ns
OE to A
tPLZ, tPHZ Output Disable Time,
0.8
4.6
0.8
4.5
0.8
4.4
ns
OE to B
tPLZ, tPHZ Output Disable Time,
0.8
5.2
0.6
5.6
0.6
4.8
ns
OE to A
tosHL, tosLH Output to Output
Skew(7)
0.05
0.5
0.75
ns
Note:
7. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
separate outputs of the same device. The specification applies to any outputs switching in the same direction,
either HIGH-to-LOW (tosHL) or LOW-to-HIGH (tosLH).
Dynamic Switching Characteristics
Symbol
Parameter
VOLP
Quiet Output Dynamic
Peak VOL, A to B
VOLP
Quiet Output Dynamic
Peak VOL, B to A
VOLV
Quiet Output Dynamic
Valley VOL, A to B
VOLV
Quiet Output Dynamic
Valley VOL, B to A
VOHV Quiet Output Dynamic
Valley VOH, A to B
VOHV Quiet Output Dynamic
Valley VOH, B to A
VCCB (V)
1.8
1.8
VCCA (V)
2.5
3.3
Conditions
CL = 30 pF, VIH = VCC,
VIL = 0V
2.5
3.3
1.8
2.5
CL = 30 pF, VIH = VCC,
1.8
3.3
VIL = 0V
2.5
3.3
1.8
2.5
CL = 30 pF, VIH = VCC,
1.8
3.3
VIL = 0V
2.5
3.3
1.8
2.5
CL = 30 pF, VIH = VCC,
1.8
3.3
VIL = 0V
2.5
3.3
1.8
2.5
CL = 30 pF, VIH = VCC,
1.8
3.3
VIL = 0V
2.5
3.3
1.8
2.5
CL = 30 pF, VIH = VCC,
1.8
3.3
VIL = 0V
2.5
3.3
TA = +25°C
Typical
0.25
0.25
0.6
0.6
0.8
0.8
–0.25
–0.25
–0.6
–0.6
–0.8
–0.8
1.3
1.3
1.7
1.7
2.0
2.0
Units
V
V
V
V
V
V
©2000 Fairchild Semiconductor Corporation
74VCX163245 Rev. 1.7
8
www.fairchildsemi.com