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參數(shù)資料
| 型號： | 933794820602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 計數(shù)器 |
| 英文描述： | F/FAST SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, SOT-38-4, DIP-16 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 104K |
| 代理商： | 933794820602 |
Philips Semiconductors
Product specification
74F193
Up/down binary counter with separate up/down clocks
1995 Jul 17
8
Timing Diagram (Typical clear, load, and count sequence)
NOTES:
1. Clear overrides load, data, and count inputs.
2. When counting up, count-down input must be High; when counting down, count-up input must be High.
Q0
Q1
Q2
Q3
0
13
14
15
0
1
2
1
0
15
14
13
COUNT UP
COUNT DOWN
CLEAR
PRESET
CLEAR1
LOAD
D0
D1
D2
D3
COUNT UP2
COUNT DOWN2
SEQUENCE
DATA
OUTPUTS
MR
PL
CPU
CPD
TCU
TCD
SF00756
Binary Counter
TEST CIRCUIT AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0V
tTHL (tf )
INPUT PULSE REQUIREMENTS
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
Input Pulse Definition
VCC
family
74F
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for Totem-Pole Outputs
DEFINITIONS:
RL = Load resistor;
see AC ELECTRICAL CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC ELECTRICAL CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
tTHL (tf )
tTLH (tr )
AMP (V)
amplitude
3.0V
1.5V
VM
SF00006
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