MC1455 ,Timer2MC1455, MC1455B, NCV1455B150 1025°C1258.01006.075 0°C4.025°C5070°C2.0250 00 0.1 0.2 0.3 0.4 5.0 10 ..
MC1455 ,TimerELECTRICAL CHARACTERISTICS (T = +25°C, V = +5.0 V to +15 V, unless otherwise noted.)A CCCharacteris ..
MC145502FN ,PCM Codec-Filter Mono-CircuitFeatures of the MC145500 Plus:• 16–Pin Package• Complete Access to the Three Terminal Transmit Inpu ..
MC145502L ,PCM Codec-Filter Mono-CircuitBLOCK DIAGRAMRDDRECEIVE SHIFT1RxO D/ARCEREGISTERFREQUENCYRDCRxRxGVSHAREDRx DD–DAC400 μA÷ 1, 12, 16, ..
MC145502P ,PCM Codec-Filter Mono-CircuitFeatures of the MC145500 Plus:• 16–Pin Package• Complete Access to the Three Terminal Transmit Inpu ..
MC145503 ,PCM Codec-Filter Mono-Circuitfeatures can be made available in a lower pin countP SUFFIXpackage tailored to a specific user’s ap ..
MC7447RX1000NB ,PPC7457RX1000NBfeatures of the MPC7457 described in the MPC7457 RISCMicroprocessor Hardware Specifications.• Power ..
MC7447-RX1000NB ,PPC7457RX1000NB Freescale Semiconductor, Inc. Advance InformationMPC7457RXNXPNSRev. 2, 10/2003MPC7457 Pa ..
MC74A5-33SNTR ,Serial Digital Temperature Sensor3MC74DETAILED OPERATING DESCRIPTIONMC74 Serial Bus ConventionsThe MC74 acquires and converts temper ..
MC74A5-50T ,Serial Digital Temperature SensorELECTRICAL CHARACTERISTICS (V = 3.3 V or 5.0V , –40°C ≤ T ≤ 125°C, unless otherwise noted.)DD ASymb ..
MC74AC00 ,QUAD 2-INPUT NAND GATEMAXIMUM RATINGS*Symbol Parameter Value UnitV DC Supply Voltage (Referenced to GND) –0.5 to +7.0 VCC ..
MC74AC00 ,QUAD 2-INPUT NAND GATE * * *QUAD 2-INPUTNAND GATE• Outputs Source/Sink 24 mA• ′ACT00 Has TTL Compatible InputsVCC14 13 12 ..
MC1455-MC1455B
Timer
MC1455, MC1455B,
NCV1455B
Timers
The MC1455 monolithic timing circuit is a highly stable controller
capable of producing accurate time delays or oscillation. Additional
terminals are provided for triggering or resetting if desired. In the time
delay mode, time is precisely controlled by one external resistor and
capacitor. For astable operation as an oscillator, the free−running
frequency and the duty cycle are both accurately controlled with two
external resistors and one capacitor. The circuit may be triggered and
reset on falling waveforms, and the output structure can source or sink
up to 200 mA or drive MTTL circuits. Direct Replacement for NE555 Timers Timing from Microseconds through Hours Operates in Both Astable and Monostable Modes Adjustable Duty Cycle High Current Output Can Source or Sink 200 mA Output Can Drive MTTL Temperature Stability of 0.005% per °C Normally ON or Normally OFF Output
Figure 1. 22 Second Solid State Time Delay Relay Circuit10 k
0.1 �Ft = 1.1; R and C = 22 sec
Time delay (t) is variable by
changing R and C (see Figure 16).
VCC
Threshold
Control Voltage
Trigger
Gnd Reset
Discharge
Output
0.01 �F
Test circuit for measuring DC parameters (to set output and
measure parameters): When VS � 2/3 VCC, VO is low. When VS � When VO is low, Pin 7 sinks current. To test for Reset, set VO high, apply Reset voltage, and test for current flowing into Pin 7.
