Integrated circuits: clock modules, timers

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EXAR

Real-time clock (RTCs) - 64 kHz | XRT85 series

Features

Fully integrated single chip solution for E1, T1 or 64kHz clock synchronization applications.
Extracts 2048 kHz, 1544 kHz clock and data com-ponents
Extracts 64 KHz and 8 kHz,...

Real-time clock (RTCs) - 64 kHz | XRT85 series

Features

Fully integrated single chip solution for E1, T1 or 64kHz clock synchronization applications.
Extracts 2048 kHz, 1544 kHz clock and data com-ponents
Extracts 64 KHz and 8 kHz, 400 Hz clock information
Line Code Violation alarms
On-chip digital clock recovery circuit
Supports 75Ω and 120Ω (E1), 100Ω (T1) applications
Crystal-less digital jitter attenuator with 32-bit FIFOthat can either be enabled or disabled
Receive loss of signal (RLOS) output
Meets Telcordia GR-1244-CORE Section 3.4.1 R3-27 specification
Meets or exceeds T1 and E1 specifications in ITU G.703, G.775
Single +3.3V Supply Operation
Logic inputs accept either 3.3 V or 5 V levels
28 pin TSSOP package
Pb-Free, RoHS Compliant Versions Offered
Diodes Incorporated

Integrated circuit timer - 0.5 MHz, 4.5 - 16 V | NA555

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with...

Integrated circuit timer - 0.5 MHz, 4.5 - 16 V | NA555

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5-V supply, output levels are compatible with TTL inputs. The NE555, SA555 and NA555 are supplied in a small outline 8 pin package (SO-8).

Integrated circuit timer - 0.5 MHz, 4.5 - 16 V | NE555

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with...

Integrated circuit timer - 0.5 MHz, 4.5 - 16 V | NE555

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5-V supply, output levels are compatible with TTL inputs. The NE555, SA555 and NA555 are supplied in a small outline 8 pin package (SO-8).

Integrated circuit timer - 0.5 MHz, 4.5 - 16 V | SA555

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with...

Integrated circuit timer - 0.5 MHz, 4.5 - 16 V | SA555

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5-V supply, output levels are compatible with TTL inputs. The NE555, SA555 and NA555 are supplied in a small outline 8 pin package (SO-8).
Micro Crystal

Real-time clock (RTCs) - 32.768 kHz | RV series

Micro Crystals family of Real Time Clocks (RTCs) combine the 32.768kHz tuning-fork crystal together with the CMOS based oscillator circuitry in a miniature, RoHS compliant Ceramic-Package!
C2...

Real-time clock (RTCs) - 32.768 kHz | RV series

Micro Crystals family of Real Time Clocks (RTCs) combine the 32.768kHz tuning-fork crystal together with the CMOS based oscillator circuitry in a miniature, RoHS compliant Ceramic-Package!
C2 package: 5.0 x 3.2 mm
C3 package: 3.7 x 2.5 mm
C7 package: 3.2 x 1.5 mm, world smallest RTC
Each of below products is dedicated to address markets request for high accuracy, temperature compensation, low cost, low current consumption, miniature packaging and automotive qualification according to AEC-Q200.
There are a range of outstanding products available for standard Interfaces like I2C and SPI in 4-wire and 3-wire mode, incl. worlds lowest current consumption of 130nA and the smallest package C7 with the dimension of 3.2 x 1.5mm.

Real-time clock (RTCs) - 1.2 - 5.5 V | RVxxxxC2, RVxxxxC3

Micro Crystal has added a new, smaller package size to its Real Time Clock Modules product line portfolio.

The new C3 Package Real Time Clock Modules with embedded 32.768 kHz crystal are available either with integrated temperature compensation...

Real-time clock (RTCs) - 1.2 - 5.5 V | RVxxxxC2, RVxxxxC3

Micro Crystal has added a new, smaller package size to its Real Time Clock Modules product line portfolio.

The new C3 Package Real Time Clock Modules with embedded 32.768 kHz crystal are available either with integrated temperature compensation...
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