Aeroflex UT54ACTS220
The UT54ACTS220 is designed to be a companion chip to UTMC’s UT69151 SµMMIT family for the purpose of generating 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.| Part No. | UT54ACTS220 |
|---|---|
| Datasheet | UT54ACTS220 Download |
| Manufacturer |  Aeroflex |
| Description | Clock and Waut State Generation Circuit |
| Buy | Stock & Price |
FEATURES
● 1.2µ radiation-hardened CMOS - Latchup immune● High speed
● Low power consumption
● Single 5-volt supply
● Available QML Q or V processes
● Flexible package - 14-pin DIP - 14-lead flatpack
DESCRIPTION
The 48MHz clock can have a duty cycle that varies by ± 20%. The UT54ACT220 generates a 24MHz clock NC with a ± 5% duty cycle variation. The wait-state circuit generates CLKOUT DataSheet4U.com a single wait-state by delaying the falling edge of DTACK into CLKOUT the S µMMIT. The clock/timing device generates DTACK from CLKIN the falling edge of input RCS which is synchronized by the NC falling edge of 24MHz. The S µMMIT drives inputs RCS and 48MHz DMACK. The devices are characterized over full military temperature range of -55°C to +125°C. LOGIC SYMBOL MRST 48MHz RCS DMACK (10) (6) (9) (8) S CTR1 SRG2 1D S (11) (12) DTACK (13) VSS PINOUTS 14-Pin DIP Top View NC CLKOUT CLKOUT CLKIN NC 48MHz VSS 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VDD 24MHz DTACK TEST MRST RCS DMACK 14-Lead Flatpack Top View 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VDD 24MHz DTACK TEST MRST RCS DMACK DataShee 24MHz TEST (2) CLKIN (4) (3) CLKOUT CLKOUT Note: 1.
