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Número de pieza | UT54ACTS220 | |
Descripción | Clock and Waut State Generation Circuit | |
Fabricantes | Aeroflex Microelectronic Solutions | |
Logotipo | ||
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UT54ACTS220
Clock and Wait-State Generation Circuit
FEATURES
• 1.2µ radiation-hardened CMOS
PINOUTS
- Latchup immune
14-Pin DIP
• High speed
Top View
• Low power consumption
• Single 5-volt supply
• Available QML Q or V processes
• Flexible package
- 14-pin DIP
- 14-lead flatpack
NC 1 14 VDD
CLKOUT 2 13 24MHz
CLKOUT 3 12 DTACK
CLKIN 4 11
TEST
NC 5 10 MRST
DESCRIPTION
48MHz 6
9 RCS
The UT54ACTS220 is designed to be a companion chip to
VSS 7
8 DMACK
UTMC’s UT69151 SµMMIT family for the purpose of gener-
ating clock and wait-state signals. The device contains a divide
by two circuit that accepts TTL input levels and drives CMOS
output buffers. The chip accepts a 48MHz clock and generates
a 24MHz clock. The 48MHz clock can have a duty cycle that
14-Lead Flatpack
Top View
varies by ± 20%. The UT54ACT220 generates a 24MHz clock
with a ± 5% duty cycle variation. The wait-state circuit generates
NC
a single wait-state by delaying the falling edge of DTACDKatianStoheet4U.cCoLmKOUT
the SµMMIT. The clock/timing device generates DTACK from
CLKOUT
the falling edge of input RCS which is synchronized by the
CLKIN
falling edge of 24MHz. The SµMMIT drives inputs RCS and
NC
DMACK.
48MHz
The devices are characterized over full military temperature
VSS
1 14
2 13
3 12
4 11
5 10
69
78
range of -55°C to +125°C.
LOGIC SYMBOL
VDD
24MHz
DTACK
TEST
MRST
RCS
DMACK
DataShee
MRST (10)
S
48MHz (6)
RCS (9)
DMACK (8)
CTR1
SRG2
1D
S
(13)
24MHz
(12)
DTACK
(11)
TEST
(4)
CLKIN
(2)
CLKOUT
(3)
CLKOUT
Note:
1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC
Publication 617-12.
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UT54ACTS220
DC ELECTRICAL CHARACTERISTICS 7
(VDD = 5.0V ±10%; VSS = 0V 6, -55°C < TC < +125°C)
SYMBOL
PARAMETER
CONDITION
VIL Low-level input voltage 1
TTL
VIH High-level input voltage 1
TTL
IIN Input leakage current
TTL
VDD = 5.5V
VIN = VDD or VSS
VOL1
Low-level output voltage 3
Except CLKOUT/CLKOUT
IOL = 8mA, VDD = 4.5V
IOL = 100µA
VOH1
High-level output voltage 3
Except CLKOUT/CLKOUT
IOH = -8mA, VDD = 4.5V
VOL2
CLKOUT/CLKOUT Low-level output
voltage 3
IOL = 100µA
VOH2
CLKOUT/CLKOUT High-level output
voltage 3
IOH = -100µA
et4U.com IOS Short-circuit output current 2 ,4
VO = VDD and VSS
VDD = 5.5V
DataSheet4U.com
IOL1 Output current10
VIN = VDD or VSS
(Sink), Except CLKOUT/CLKOUT
VOL = 0.4V
IOH1
Output current10
(Source), Except CLKOUT/CLKOUT
VIN = VDD or VSS
VOH = VDD - 0.4V
IOL2
CLKOUT/CLKOUT output current10
VIN = VDD or VSS
(Sink)
VOL = 0.4V
IOH2
IIH
IIL
Ptotal
CLKOUT/CLKOUT output current10
(Source)
Input current high
Input current low
Power dissipation 2, 8, 9
VIN = VDD or VSS
VOH = VDD - 0.4V
VIN = VDD or VSS
VIN = 5.5V
VIN = VDD or VSS
VIN = VSS
CL = 50pF
IDDQ
Quiescent Supply Current
VDD = 5.5V
VIN = VDD or VSS
MIN
2.25
-1
3.15
4.25
8
-8
12
-12
MAX
0.8
UNIT
V
V
1 µA
0.4
0.25 V
0.25
+300
V
V
V
mA DataShee
mA
mA
mA
mA
+1.0 µA
-1.0 µA
1.0 mW/
MHz
10 µA
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5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet UT54ACTS220.PDF ] |
Número de pieza | Descripción | Fabricantes |
UT54ACTS220 | Clock and Waut State Generation Circuit | Aeroflex Microelectronic Solutions |
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