Features: • Output Drive Capability: 10 LSTTL Loads• Outputs Directly Interface to CMOS, NMOS, and TTL• Operating Voltage Range: 2 to 6 V• Low Input Current: 5 mA• High Noise Immunity Characteristic of CMOS Devices• In Compliance with the Requirements Defined by...
MC54HC4049: Features: • Output Drive Capability: 10 LSTTL Loads• Outputs Directly Interface to CMOS, NMOS, and TTL• Operating Voltage Range: 2 to 6 V• Low Input Current: 5 mA• High...
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PinoutDescriptionThe F373 contains eight D-type latches with 3-state output buffers. When the Latc...
PinoutDescriptionThe F374 consists of eight edge-triggered flip-flops with individual D-type input...
Symbol | Parameter | Value | Unit |
vcc | DC Supply Voltage (Referenced to GND) | 0.5 to +7.0 | V |
VIN | DC Input Voltage (Referenced to GND) | 0.5 to VCC + 0.5 | V |
VOUT | DC Output Voltage (Referenced to GND) | 0.5 to VCC + 0.5 | V |
LIN | DC Input Current, per Pin | ±20 | mA |
IOUT | DC Onput Current, per Pin | ±25 | mA |
ICC | DC Supply Current Per Supply Pin | ±50 | mA |
PD | Power dissipation in still air piastic DIP SOIC package |
750 500 |
mW |
TSTG | Storage Temperature | 65 to +150 | °C |
TL | Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) |
260 300 |
°C |
The MC54/74HC4049 consists of six inverting buffers, and the MC54/74HC4050 consists of six noninverting buffers. They are identical in pinout to the MC14049UB and MC14050B metalgate CMOS buffers. The MC54/74HC4049 inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.
The input protection circuitry on these devices has been modified by eliminating the VCC diodes to allow the use of input voltages up to 15 volts. Thus, the MC54/74HC4049 may be used as logiclevel translators that convert from a high voltage to a low voltage while operating at the lowvoltage power supply. They allow MC14000series CMOS operating up to 15 volts to be interfaced with HighSpeed CMOS at 2 to 6 volts. The protection diodes to GND are Zener diodes, which protect the inputs from both positive and negative voltage transients.