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参数资料
| 型号： | IDT74FCT138TDC |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | FCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16 |
| 封装： | 0.150 INCH, SOIC-16 |
| 文件页数： | 5/6页 |
| 文件大小： | 119K |
| 代理商： | IDT74FCT138TDC |
5
IDT74FCT138T/AT/CT
FAST CMOS 1-OF-8 DECODER WITH ENABLE
COMMERCIALTEMPERATURERANGE
Pulse
Generator
R T
D.U.T.
V CC
V IN
C L
V OUT
50pF
500
500
7.0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
DATA
IN PU T
TIM IN G
IN PU T
ASYNCHRON OUS C ONTROL
PRES ET
CLEAR
ETC.
SYNC HRO N OU S CON TRO L
tSU
tH
tREM
tSU
tH
HIGH-LOW -HIGH
PULSE
LO W -H IGH -LOW
PULSE
tW
1.5V
SAM E PHASE
IN PU T TR ANSITION
3V
1.5V
0V
1.5V
VOH
tPLH
OU TPUT
OPPOSITE P HASE
IN PU T TR ANSITION
3V
1.5V
0V
tPLH
tPHL
VOL
CO NTR OL
IN PU T
3V
1.5V
0V
3.5V
0V
OU TPUT
NO RM A LLY
LO W
OU TPUT
NO RM A LLY
HIGH
SW ITC H
CLOSE D
SW ITC H
OPEN
VOL
0.3V
tPLZ
tPZL
tPZH
tPHZ
3.5V
0V
1.5V
ENAB LE
DISA BLE
VOH
PRES ET
CLEAR
CLOC K ENABLE
ETC.
Octal lin k
TEST CIRCUITS AND WAVEFORMS
PROPAGATION DELAY
TEST CIRCUITS FOR ALL OUTPUTS
ENABLE AND DISABLE TIMES
SET-UP, HOLD, AND RELEASE TIMES
PULSE WIDTH
SWITCH POSITION
Test
Switch
Open Drain
Disable Low
Closed
Enable Low
All Other Tests
Open
8-link
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control
Disable-HIGH.
2. Pulse Generator for All Pulses: Rate
≤ 1.0MHz; tF ≤ 2.5ns; tR ≤
2.5ns.
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