CD54HC160F Datasheet, PDF (11/14 Pages) Texas Instruments – BCD SYNCHRONOUS DECADE COUNTERS

CD54HC160, CD54HC162
BCD SYNCHRONOUS DECADE COUNTERS
PARAMETER MEASUREMENT INFORMATION
SCHS301 – JUNE 2000
From Output
Under Test
Test
Point
CL
(see Note A)
RL = 1 kΩ
VCC
S1
S2
PARAMETER
tPZH
ten
tPZL
tdis
tPHZ
tPLZ
tpd or tt
S1
Open
Closed
Open
Closed
Open
S2
Closed
Open
Closed
Open
Open
LOAD CIRCUIT
Input
In-Phase
Output
Out-of-Phase
Output
50% VCC
tPLH
50% VCC
10%
tPHL
90%
50% VCC
90%
tPHL
90%
tr
tPLH
5100%%VCC
tf
50% VCC
10%
VCC
0V
VOH
501%0%VCVCOL
tf
90% ^VOH
VOL
tr
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
Input 50%
10%
90%
tr
90%
VCC
501%0%VC0CV
tf
VOLTAGE WAVEFORM
INPUT RISE AND FALL TIMES
CLR
Input
CLK
50% VCC
VCC
0V
trec
VCC
50% VCC
0V
VOLTAGE WAVEFORMS
RECOVERY TIME
Output
Control
tPZL
Output
Waveform 1
(See Note B)
tPZH
Output
Waveform 2
(See Note B)
50% VCC
50% VCC
VCC
0V
≈VCC
50%
tPLZ
≈VCC
10% _VOL
50% VCC
tPHZ
90% ^VOH
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS
NOTES: A. CL includes probe and test-fixture capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.
D. The outputs are measured one at a time with one input transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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