74LCXH245 Datasheet, PDF (4/10 Pages) Fairchild Semiconductor – Low Voltage Bidirectional Transceiver with Bushold

DC Electrical Characteristics (Continued)
Symbol
Parameter
Conditions
V_CC
(V)
I_I(HOLD)
Bushold Input Minimum
V_IN = 0.7V
2.3
Drive Hold Current
V_IN = 1.7V
V_IN = 0.8V
3.0
V_IN = 2.0V
I_I(OD)
Bushold Input Over-Drive
(Note 6)
2.7
Current to Change State
(Note 7)
(Note 6)
3.6
(Note 7)
I_OZ
3-STATE I/O Leakage
I_CC
Quiescent Supply Current
∆I_CC
Increase in I_CC per Input
Note 5: Outputs disabled or 3-STATE only.
V_O = V_CC or GND
V_I = V_CC or GND
3.6V ≤ V_I, V_O ≤ 5.5V (Note 5)
V_IH = V_CC −0.6V
2.3 − 3.6
2.3 − 3.6
2.3 − 3.6
2.3 - 3.6
Note 6: An external driver must source at least the specified current to switch from LOW-to-HIGH.
Note 7: An external driver must sink at least the specified current to switch from HIGH-to-LOW.
T_A = −40°C to +85°C
Min
Max
45
−45
75
−75
300
−300
450
−450
±5.0
10
±10
500
Units
µA
µA
µA
µA
µA
AC Electrical Characteristics
T_A = −40°C to +85°C, R_L = 500Ω
Symbol
Parameter
V_CC = 3.3V ± 0.3V
C_L = 50 pF
V_CC = 2.7V
C_L = 50 pF
V_CC = 2.5V ± 0.2V
C_L = 30 pF
Units
Min
Max
Min
Max
Min
Max
t_PHL
Propagation Delay
t_PLH
A_n to B_n or B_n to A_n
1.5
7.0
1.5
8.0
1.5
8.4
ns
1.5
7.0
1.5
8.0
1.5
8.4
t_PZL
t_PZH
Output Enable Time
1.5
8.5
1.5
9.5
1.5
10.5
ns
1.5
8.5
1.5
9.5
1.5
10.5
t_PLZ
Output Disable Time
1.5
7.5
1.5
8.5
1.5
9.0
ns
t_PHZ
1.5
7.5
1.5
8.5
1.5
9.0
t_OSHL
Output to Output Skew
1.0
ns
t_OSLH
(Note 8)
1.0
Note 8: 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 (t_OSHL) or LOW-to-HIGH (t_OSLH).
Dynamic Switching Characteristics
Symbol
Parameter
V_OLP
Quiet Output Dynamic Peak V_OL
V_OLV
Quiet Output Dynamic Valley V_OL
Capacitance
Conditions
C_L = 50 pF, V_IH = 3.3V, V_IL = 0V
C_L = 30 pF, V_IH = 2.5V, V_IL = 0V
C_L = 50 pF, V_IH = 3.3V, V _IL = 0V
C_L = 30 pF, V_IH = 2.5V, V_IL = 0V
V_CC
T_A = 25°C
Units
(V)
Typical
3.3
0.8
V
2.5
0.6
3.3
−0.8
V
2.5
−0.6
Symbol
C_IN
C_I/O
C_PD
Parameter
Input Capacitance
Input/Output Capacitance
Power Dissipation Capacitance
Conditions
V_CC = Open, V_I = 0V or V_CC
V_CC = 3.3V, V_I = 0V or V_CC
V_CC = 3.3V, V_I = 0V or V_CC, f = 10 MHz
Typical
7
8
25
Units
pF
pF
pF
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