CD54HC160, CD54HC162

BCD SYNCHRONOUS DECADE COUNTERS

SCHS301 – JUNE 2000

11

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

VOLTAGE WAVEFORM

INPUT RISE AND FALL TIMES

50%

10%

10%

90%

90%

VCC

0 V

tr

tf

Input

VOLTAGE WAVEFORMS

PROPAGATION DELAY AND OUTPUT TRANSITION TIMES

10%

10%

90%

90%

VCC

VOH

VOL

0 V

tr

tf

Input

In-Phase

Output

50% VCC

tPLH

tPHL

10%

10%

90%

90%

VOH

VOL

tr

tf

tPHL

tPLH

Out-of-Phase

Output

10%

90%

VCC

≈VCC

VOL

0 V

Output

Control

Output

Waveform 1

(See Note B)

tPZL

tPLZ

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS

VOH

≈0 V

50%

tPZH

tPHZ

Output

Waveform 2

(See Note B)

≈VCC

Test

Point

From Output

Under Test

CL

(see Note A)

VCC

S1

S2

LOAD CIRCUIT

PARAMETER

tPZH

tpd or tt

tdis

ten

tPZL

tPHZ

tPLZ

Open

Closed

S1

Closed

Open

S2

Open

Closed

Closed

Open

Open

Open

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.

RL = 1 kΩ

50% VCC

VCC

0 V

CLR

Input

CLK

50% VCC

VCC

trec

0 V

VOLTAGE WAVEFORMS

RECOVERY TIME

50% VCC

50% VCC

50% VCC

50% VCC

50% VCC

50% VCC

50% VCC

50% VCC

50% VCC

Figure 1. Load Circuit and Voltage Waveforms