74AC11257N

Supply Voltage - Min : 3 V
Maximum Operating Temperature : + 85 C
Number of Lines (Input / Output) : 2 / 1
Supply Voltage - Max : 5.5 V
Product : Selector / Multiplexer
Number of Bits : 4
Packaging : Tube
Mounting Style : Through Hole
Logic Family : AC
Propagation Delay Time : 9 ns at 3.3 V, 6.5 ns at 5 V
Package / Case : PDIP-20


Features:

· 3-State Outputs Interface Directly With System Bus
· Flow-Through Architecture Optimizes PCB Layout
· Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise
· 500-mA Typical Latch-Up Immunity at 125°C
· Provides Bus Interface From Multiple Sources in High-Performance Systems


Pinout




Specifications

Supply voltage range, VCC.................................................................................−0.5 V to 7 V
Input voltage range, VI (see Note 1) ...................................................−0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) ...............................................−0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) ............................................................±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) ......................................................±50 mA
Continuous output current, IO (VO = 0 to VCC) ........................................................±50 mA
Continuous current through VCC or GND ................................................................±100 mA
Package thermal impedance, JA (see Note 2): DB package ....................................70°C/W
DW package .............................................................................................................58°C/W
N package ................................................................................................................60°C/W
PW package .............................................................................................................83°C/W
Storage temperature range, Tstg ..............................................................−65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.


Description

The 74AC11257N is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems.

The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic level. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Parameters:

Technical/Catalog Information	74AC11257N
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Circuit	4 x 2:1
Independent Circuits	1
Mounting Type	Through Hole
Current - Output High, Low	24mA, 24mA
Package / Case	20-DIP (300 mil)
Packaging	Tube
Type	Data Selector/Multiplexer
Voltage Supply Source	Dual Supply
Operating Temperature	-40°C ~ 85°C
Voltage - Supply	3 V ~ 5.5 V
Drawing Number	296; 4040049; N; 14, 16, 18, 20
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	74AC11257N 74AC11257N