DM54161_11 Datasheet, PDF (4/12 Pages) Texas Instruments – Synchronous 4-Bit Counters

Electrical Characteristics
Over recommended operating free air temperature range (unless otherwise noted) (Continued)
Symbol
Parameter
Conditions
Typ
Min
Max
Units
(Note 1)
I_OS
Short Circuit
V_CC e Max
DM54
b20
Output Current
(Note 2)
DM74
b20
b57
mA
b57
I_CCH
Supply Current
with Outputs High
V_CC e Max
(Note 3)
DM54
DM74
85
mA
59
94
I_CCL
Supply Current
V_CC e Max
DM54
with Outputs Low
(Note 4)
DM74
91
mA
63
101
Note 1 All typicals are at V_CC e 5V T_A e 25 C
Note 2 Not more than one output should be shorted at a time
Note 3 I_CCH is measured with the LOAD high then again with the LOAD low with all inputs high and all outputs open
Note 4 I_CCL is measured with the CLOCK high then again with the CLOCK input low with all inputs low and all outputs open
Note 5 Applies to 163 which has synchronous clear inputs
Note 6 T_A e 25 C and V_CC e 5V
Switching Characteristics at V_CC e 5V and T_A e 25 C (See Section 1 for Test Waveforms and Output Load)
te ^Symbol
Parameter
From (Input)
To (Output)
R_L e 400X C_L e 15 pF
Min
Max
Units
f_MAX
Maximum Clock
Frequency
25
MHz
t_PLH
Propagation Delay Time
Clock to
Low to High Level Output
Ripple Carry
35
ns
t_PHL
Propagation Delay Time
Clock to
le ^{High to Low Level Output}
Ripple Carry
35
ns
t_PLH
Propagation Delay Time
Clock
Low to High Level Output
(Load High) to Q
20
ns
t_PHL
Propagation Delay Time
Clock
High to Low Level Output
(Load High) to Q
23
ns
o ^tPLH
Propagation Delay Time
Clock
Low to High Level Output
(Load Low) to Q
25
ns
t_PHL
Propagation Delay Time
Clock
High to Low Level Output
(Load Low) to Q
29
ns
s _tPLH
Propagation Delay Time
Enable T to
Low to High Level Output
Ripple Carry
16
ns
t_PHL
Propagation Delay Time
Enable T to
High to Low Level Output
Ripple Carry
16
ns
b _tPHL
Propagation Delay Time
Clear (Note 7)
High to Low Level Output
to Q
38
ns
O ^{Note 7 Propagation delay for clearing is measured from the clear input for the 161 or from the clock input transition for the 163}
3