Quad 3-State Buffer
Description
TECHNICAL DATA
IN74HCT125A
Quad 3-State Noninverting Buffers
High-Performance Silicon-Gate CMOS
The IN74HCT125A is identical in pinout to the LS/ALS125.
The IN74HCT125A may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74HCT125A noninverting buffers are designed to be used with 3-state memory address drivers, clock drivers, and other bus-oriented systems.
The devices have four separate output enables that are active-low.
• TTL/NMOS Compatible Input Levels • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 4.
5 to 5.
5 V • Low Input Current: 1.
0 µA
ORDERING INFORMATION IN74HCT125AN Plastic IN74HCT125AD SOIC TA = -55° to 125° C for all packages
LOGIC DIAGRAM PIN ASSIGNMENT
FUNCTION TABLE
Inputs PIN 14 =VCC PIN 7 = GND A H L X OE L L H Output Y H L Z
w
w
w
.
d
e e h s a t a
.
u t4
m o c
X = don’t care Z = high impedance
1
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IN74HCT125A
MAXIMUM RATINGS*
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL
*
Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package)
Value -0.
5 to +7.
0 -1.
5 to VCC +1.
5 -0.
5 to VCC +0.
5 ±20 ±35 ±75 750 500 -65 to +150 260
Unit V V V mA mA mA mW °C °C
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C SOIC Package: : - 7 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VIN, VOUT TA tr, tf Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Input Rise and Fall Tim...
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