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MM74HC14, MM74HC145N, MM74HC148

Table of contents:
Info of MM74HC14
Info of MM74HC145N
Info of MM74HC148

MM74HC14, MM74HC145N, MM74HC148 Selling Leads, Datasheet

MFG:Fairchild Package Cooled:N/A D/C:09+

MM74HC14, MM74HC145N, MM74HC148 Datasheet download

Five Points

Part Number: MM74HC14

MFG: Fairchild

Package Cooled: N/A

D/C: 09+

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MM74HC14 Parameters

MM74HC14 Features

Typical propagation delay: 13 ns
Wide power supply range: 2-6V
Low quiescent current: 20 µA maximum (74HC Series)
Low input current: 1 µA maximum
Fanout of 10 LS-TTL loads
Typical hysteresis voltage: 0.9V at V_CC= 4.5V

MM74HC14 General Description

Hex Inverting Schmitt Trigger

MM74HC14 Maximum Ratings

Supply Voltage (V_CC )                                       -0.5V to+7.0V
DC Input Voltage (V_IN)                                 -1.5 to Vcc + 1.5V
DC Output Voltage (VO_UT)                           -0.5 to Vcc + 0.5V
Clamp Diode Current (I_IK , I_OK)                                 ±20 mA
DC Output Current, per pin (I_OUT )                            ±25 mA
DC V_CC or GND Current, per pin (I_CC)                        ±50 mA
Storage Temperature Range (T_STG )               -65 to +150
Power Dissipation (P_D)
(Note 3)                                                                      600 mW
S.O. Package only                                                       500 mW
Lead Temperature (T_L)
(Soldering 10 seconds)                                                 260°C

MM74HC14 Features

Typical propagation delay: 13 ns
Wide power supply range: 2-6V
Low quiescent current: 20 µA maximum (74HC Series)
Low input current: 1 µA maximum
Fanout of 10 LS-TTL loads
Typical hysteresis voltage: 0.9V at V_CC= 4.5V

MM74HC14 Typical Application

MM74HC14 Datasheet

MM74HC148 General Description

The MM74HC148 priority encoder utilizes advanced silicon- gate CMOS technology. It has the high noise immunity and low power consumption typical of CMOS circuits, as well as the speeds and output drive similar to LB-TTL.

This priority encoder accepts 8 input request lines 07 and outputs 3 lines A0A2. The priority encoding ensures that only the highest order data line is encoded. Cascading circuitry (enable input EI and enable output EO) has been provided to allow octal expansion without the need for external circuitry. All data inputs and outputs are active at the low logic level.

All inputs are protected from damage due to static discharge by internal diode clamps to V_CC and ground.

MM74HC148 Maximum Ratings

Supply Voltage (V_CC)                                                    -0.5 to +7.0V
DC Input Voltage (V_IN)                                                 -1.5 to V_CC +1.5V
DC Output Voltage (V_OUT)                                            -0.5 to V_CC +0.5V
Clamp Diode Current (I_IK, I_OK)                                     ±20 mA
DC Output Current, per pin (I_OUT)                               ±25 mA
DC VCC or GND Current, per pin (I_CC)                         ±50 mA
Storage Temperature Range (T_STG)                           -65 to +150
Power Dissipation (P_D)
(Note 3)                                                                       600 mW
S.O. Package only                                                        500 mW
Lead Temperature (T_L)
(Soldering 10 seconds)                                                260

MM74HC148 Features

`Typical propagation delay: 13 ns
`Wide supply voltage range: 2V6V

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