CD74AC251,
CD74ACT251
Data sheet acquired from Harris Semiconductor
SCHS246
8-Input Multiplexer, Three-State
August 1998
Features
Description
• Buffered Inputs
The CD74AC251 and CD74ACT251 8-input multiplexers that
utilize the Harris Advanced CMOS Logic technology. This
multiplexer features both true (Y) and complement (Y) outputs
as well as an Output Enable (OE) input. The OE must be at a
LOW logic level to enable this device. When the OE input is
HIGH, both outputs are in the high-impedance state. When
enabled, address information on the data select inputs determines which data input is routed to the Y and Y outputs.
• Typical Propagation Delay
- 6ns at VCC = 5V, TA = 25oC, CL = 50pF
• Exceeds 2kV ESD Protection MIL-STD-883, Method
3015
• SCR-Latchup-Resistant CMOS Process and Circuit
Design
Ordering Information
• Speed of Bipolar FAST™/AS/S with Significantly
Reduced Power Consumption
PART
NUMBER
• Balanced Propagation Delays
TEMP.
RANGE (oC)
PKG.
NO.
PACKAGE
CD74AC251E
0 to 70oC, -40 to 85, 16 Ld PDIP
-55 to 125
E16.3
0 to 70oC, -40 to 85, 16 Ld SOIC
-55 to 125
M16.15
CD74ACT251M
Pinout
E16.3
CD74AC251M
• ±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
- Drives 50Ω Transmission Lines
0 to 70oC, -40 to 85, 16 Ld PDIP
-55 to 125
CD74ACT251E
• AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
0 to 70oC, -40 to 85, 16 Ld SOIC
-55 to 125
M16.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
CD74AC251, CD74ACT251
(PDIP, SOIC)
TOP VIEW
I3 1
16 VCC
I2 2
15 I4
I1 3
14 I5
I0 4
13 I6
Y 5
12 I7
Y 6
11 S0
OE 7
10 S1
GND 8
2. Wafer and die for this part number is available which meets all electrical specifications. Please contact your local sales office or Harris
customer service for ordering information.
9 S2
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
Copyright © Harris Corporation 1998
1
File Number
1981.1
