MC74HC125A,
MC74HC126A
Quad 3-State Noninverting
Buffers
High−Performance Silicon−Gate CMOS
http://onsemi.com
The MC74HC125A and MC74HC126A are identical in pinout to
the LS125 and LS126. The device inputs are compatible with standard
CMOS outputs; with pullup resistors, they are compatible with
LSTTL outputs.
The HC125A and HC126A 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 (HC125A) or active−high (HC126A).
SOIC−14 NB
D SUFFIX
CASE 751A
TSSOP−14
DT SUFFIX
CASE 948G
PIN ASSIGNMENT
Features
OE1
A1
1
2
14
13 OE4
12
V
CC
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
Y1
3
4
A4
OE2
11 Y4
• Low Input Current: 1.0 mA
A2
Y2
5
6
10 OE3
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the JEDEC Standard No. 7 A Requirements
• Chip Complexity: 72 FETs or 18 Equivalent Gates
9
8
A3
Y3
GND
7
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
MARKING DIAGRAMS
14
14
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
HC
12xA
ALYWG
G
HC12xAG
AWLYWW
Compliant
LOGIC DIAGRAM
1
1
HC125A
HC126A
SOIC−14 NB
TSSOP−14
Active−Low Output Enables
Active−High Output Enables
x
= 5, 6
A
L, WL
Y, YY
= Assembly Location
= Wafer Lot
= Year
2
3
2
3
A1
A1
Y1
Y2
Y3
Y1
Y2
Y3
1
5
1
5
W, WW = Work Week
OE1
A2
OE1
A2
G or G
= Pb−Free Package
6
6
(Note: Microdot may be in either location)
4
9
4
9
OE2
A3
OE2
A3
FUNCTION TABLE
HC125A
HC126A
8
8
Inputs Output
Inputs Output
A
OE
Y
A
OE
Y
10
12
10
12
OE3
A4
OE3
A4
H
L
X
L
L
H
H
L
Z
H
L
X
H
H
L
H
L
Z
11
11
Y4
Y4
13
13
OE4
OE4
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
PIN 14 = V
CC
PIN 7 = GND
© Semiconductor Components Industries, LLC, 2014
1
Publication Order Number:
August, 2014 − Rev. 15
MC74HC125A/D