MM74HC4049

Features:

`Typical propagation delay: 8 ns
`Wide power supply range: 2V6V
`Low quiescent supply current: 20 A maximum (74HC)
`Fanout of 10 LS-TTL loads


Pinout




Specifications

Supply Voltage (V_CC) ............-0.5 to +7.0V
DC Input Voltage (V_IN) .........-1.5 to VCC +1.5V
DC Output Voltage (V_OUT) .......-0.5 to VCC +0.5V
Clamp Diode Current (I_IK, I_OK) ..........±20 mA
DC Output Current, per pin (I_OUT) ........±35 mA
DC VCC or GND Current, per pin (I_CC) .......±70 mA
Storage Temperature Range (T_STG) ..-65°C to +150° C
Power Dissipation (P_D)
(Note 3)..................... 600 mW
S.O. Package only................ 500 mW
Lead Temperature (TL)
(Soldering 10 seconds).............. 260°C
Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Note 2: Unless otherwise specified all voltages are referenced to ground.


Description

The MM74HC4049 and the MM74HC4050 utilize advanced silicon-gate CMOS technology, and have a modified input protection structure that enables these parts to be used as logic level translators which will convert high level logic to a low level logic while operating from the low logic supply. For example, 015V CMOS logic can be converted to 05V logic when using a 5V supply. The modified input protection of MM74HC4049 has no diode connected to V_CC, thus allowing the input voltage to exceed the supply. The lower zener diode protects the input from both positive and negative static voltages. In addition each part can be used as a simple buffer or inverter without level translation. The MM74HC4049 is pin and functionally compatible to the CD4049BC and the MM74HC4050 is compatible to the CD4050BC