參數(shù)資料
型號: SN54HC393W
廠商: TEXAS INSTRUMENTS INC
元件分類: 計數(shù)器
英文描述: HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CDFP14
封裝: CERAMIC, DFP-14
文件頁數(shù): 7/10頁
文件大?。?/td> 191K
代理商: SN54HC393W
SN54HC393, SN74HC393
DUAL 4-BIT BINARY COUNTERS
SCLS143B – DECEMBER 1982 – REVISED MAY 1997
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
VOLTAGE WAVEFORMS
SETUP AND HOLD AND INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
th
tsu
50%
10%
90%
VCC
0 V
tr
tf
Reference
Input
Data
Input
50%
High-Level
Pulse
50%
VCC
0 V
50%
VCC
0 V
tw
Low-Level
Pulse
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
50%
10%
90%
VCC
VOH
VOL
0 V
tr
tf
Input
In-Phase
Output
50%
tPLH
tPHL
50%
10%
90%
VOH
VOL
tr
tf
tPHL
tPLH
Out-of-Phase
Output
NOTES: A. CL includes probe and test-fixture capacitance.
B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR
≤ 1 MHz, ZO = 50 , tr = 6 ns, tf = 6 ns.
C. For clock inputs, fmax is measured when the input duty cycle is 50%.
D. The outputs are measured one at a time with one input transition per measurement.
E. tPLH and tPHL are the same as tpd.
Test
Point
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
Figure 1. Load Circuit and Voltage Waveforms
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