dm74s163 Fairchild Semiconductor, dm74s163 Datasheet - Page 4

• Manufacturer Part Number: dm74s163
• Description: Synchronous 4-bit Binary Counters
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Parameter Measurement Information
Note A:The input pulses are supplied by generators having the following characteristics:
Note B: Outputs Q
Note C: V
Note A: The input pulses are supplied by generators having the following characteristics:
Note B: Enable P and enable T setup times are measured at t
Note C:V
PRR
PRR
REF
REF
1.5V.
1.5V.
1 MHz, duty cycle
1 MHz, duty cycle
D
and carry are tested at t
50%, Z
50%, Z
OUT
OUT
n
16 for DM74S161, SM74S163 where t
50 . For DM74S161/163, t
50 . t
r
Switching Time Waveforms
Switching Time Waveforms
2.5 ns, t
n
0.
f
2.5 ns. Vary PRR to measure f
r
4
2.5 ns, t
n
is the bit time when all outputs are LOW
f
2.5 ns. Vary PRR to measure f
MAX
.
MAX
.