參數(shù)資料
型號(hào)： SN54HC193FK
廠商： Texas Instruments, Inc.
元件分類： 通用總線功能
英文描述： 4-BIT SYNCHRONOUS UP/DOWN COUNTERS DUAL CLOCK WITH CLEAR
中文描述： 4位同步向上/向下計(jì)數(shù)器雙時(shí)鐘清除
文件頁數(shù)： 8/9頁
文件大?。?/td> 143K
代理商： SN54HC193FK
SN54HC193, SN74HC193
4-BIT SYNCHRONOUS UP/DOWN COUNTERS
(DUAL CLOCK WITH CLEAR)
SCLS122B – DECEMBER 1982 – REVISED MAY 1997
8
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%
50%
10%
50%
10%
90%
90%
VCC
VCC
0 V
0 V
tr
tf
Reference
Input
Data
Input
50%
High-Level
Pulse
50%
VCC
0 V
50%
50%
VCC
0 V
tw
Low-Level
Pulse
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
50%
50%
10%
50%
10%
90%
90%
VCC
VOH
VOL
0 V
tr
tf
Input
In-Phase
Output
50%
tPLH
tPHL
50%
10%
50%
10%
90%
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
相關(guān)PDF資料
PDF描述
SN54HC193W 300mA, 3.3V ±1% Output Voltage, Low Dropout Voltage Regulator; Package: SOT-223 (TO-261) 4 LEAD; No of Pins: 4; Container: Tape and Reel; Qty per Container: 4000
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SN74HC259PW 8-BIT ADDRESSABLE LATCHES
SN54HC259W Variable-frequency Critical-Mode Voltage-Mode Flyback Controller with 700V Maximum Startup and no Frequency Clamp; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Tape and Reel; Qty per Container: 2500
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