CD54-74FCT240 Datasheet, PDF (2/3 Pages) Texas Instruments – FCT Interface Logic Octal Buffers/Line Drivers, Three-State

CD54/74FCT540, CD54/74FCT540AT, CD54/74FCT241, CD54/74FCT244, CD54/74FCT244AT
Switching Specifications FCT Series tr, tf = 2.5ns, C_L = 50pF, R_L - See Figure 2
PARAMETER
SYMBOL
V_CC
(V)
+25^o
C
TYP
0^oC to
+70^oC
MIN MAX
-55^oC to
+125^oC
MIN MAX
+25^o
C
TYP
0^oC to
+70^oC
MIN MAX
-55^oC to
+125^oC
MIN MAX UNITS
Propagation Delays
Data to Outputs FCT240/AT t_PLH,
5†
5
1.5 8 1.5
9
4.4 1.5 5.6 1.5 6.7 ns
t_PHL
FCT241
t_PLH ,
5
4 1.5 6.5 1.5 7
-
-
-
-
-
ns
t_PHL
FCT244/AT
t_PLH ,
t_PHL
5 4.5 1.5 6.5 1.5 7 3.8 1.5 5.3 1.5 6.2 µs
Output Enable
FCT240/AT t_PZL,
5
7 1.5 10 1.5 10.5 4.7 1.5 6.2 1.5 7.7 µs
Times
t_PZH
FCT241
t_PZL ,
5 5.5 1.5 8 1.5 8.5 -
-
-
-
-
ns
t_PZH
FCT244/AT t_PZL,
5
6 1.5 8 1.5 8.5 4.8 1.5 6.5 1.5 7.8 ns
t_PZH
Output Disable FCT240/AT t_PLZ,
5
6 1.5 9.5 1.5 10 4 1.5 5.6 1.5 6.5 µs
Times
t_PHZ
FCT241
t_PLZ ,
5 4.5 1.5 7 1.5 7.5 -
-
-
-
-
ns
t_PHZ
FCT244/AT t_PLZ,
5
5 1.5 7 1.5 7.5 4.5 1.5 5.8 1.5 6.8 µs
t_PHZ
Power Dissipation FCT240/AT C_PD§
-
Capacitance
FCT241
C_PD §
-
38 Typical
33 Typical
38 Typical
pF
-
pF
FCT244/AT C_PD§
35 Typical
35 Typical
pF
Min. (Valley) V_OHV During Switch- V_OHV
5
0.5 Typical at +25^oC
V
ing of Other Outputs (Output Under See
Test Not Switching)
Figure 1
Max. (Peak) V_OLP During Switch- V_OLP
5
1 Typical at +25^oC
V
ing of Other Outputs (Output Under See
Test Not Switching)
Figure 1
Input Capacitance
C_I
-
-
- 10 - 10 -
- 10 - 10 pF
3-State Output Capacitance
C_O
-
-
- 15 - 15 -
- 15 - 15 pF
† 5V: min. is at 5.5V, max. is at 4.5V.
5V: min. is at 5.25V for 0^oC to +70^oC, max. is at 4.75V for 0^oC to +70^oC, typ. is at 5V
§ C_PD, measured per function, is used to determine the dynamic power consumption. P_D (per package) = V_CC I_CC + ∑ (V_CC2 fi C_PD + V_O2
fo C_L + V_CC ∆I_CC D) where:
V_CC = supply voltage
∆I_CC = flow through current x unit load
C_L = output load capacitance
D = duty cycle of input high
fo = output frequency
fi = input frequency
2