HCC4028B

Features:

 `BCD-TO-DECIMAL DECODING OR BINARY-
 `TO-OCTAL DECODING .HIGHDECODEDOUTPUTDRIVECAPABILITY "POSITIVE LOGIC" INPUTS AND OUTPUTS : DECODED OUTPUTS GO HIGH ON SELEC. TION MEDIUM-SPEED OPERATION : tPHL, tPLH =
 `80<sub>ns</sub> (typ.)@ VDD = 10V STANDARDIZED SYMMETRICAL OUTPUT
 `CHARACTERISTICS QUIESCENT CURRENT SPECIFIED TO 20V
 `FOR HCC DEVICE .5V, 10V, AND 15V PARAMETRIC RATINGS INPUT CURRENTOF 100nA AT 18V AND 25°C
 `FOR HCC DEVICE .100% TESTEDFOR QUIESCENT CURRENT MEETSALLREQUIREMENTSOFJEDECTENTATIVESTANDARDN°13A, "STANDARD SPECIFICATIONS FOR DESCRIPTION OF "B" SERIESCMOS DEVICES"


Application

The circuit shown in fig. 1 converts any 4-bit code to a decimal or hexadecimal code Fig 2 shows a number of codes and the decimal or hexadecimal number in these codes which must be applied to the input pins of the HCC/HCF4028B toselecta particular output. For example : in order to get a "high" on output n8 the input must be either an 8 expressed in 4-bit binary code, a 15 expressed in 4-bit gray code, or a 5 expressed in excess-3code.


Pinout




Specifications

Symbol	Rating	Value	Unit
VDD*	Supply Voltage : HCC Types                    HCF Types	0.5 to + 20 0.5 to + 18	V V
Vi	Input Voltage	0.5 to VDD + 0.5	V
II	DC Input Current (any one input)	± 10	mA
Ptot	Total Power Dissipation (per package) Dissipation per Output Transistor for Top = Full Package-temperature Range	200 100	mW mW
Top	Operating Temperature : HCC Types                              HCF Types	55 to + 125 40 to + 85	°C °C
Tstg	Storage Temperature	65 to + 150	°C

Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for external periods may affect device reliability.
* All voltage values are referred to VSS pin voltage.


Description

TheHCC/HCF4028B (extended temperature range and intermediate temperature range) are monolithic integrated circuit, available in 16-lead dual in-line plastic or ceramic package and plastic micropackage.

The HCC/HCF4028B types are BCD-to-decimal or binary-to-octal decoders consisting of buffering on all 4 inputs, decoding-logic gates, and 10 output buffers. A BCD code applied to the four inputs, A to D, results in a high level at the selected one of 10 decimaldecoded outputs. Similarly, a 3-bit binary code applied to inputs A through C is decoded in octal code at output 0 to 7 if D = "0". High drive capability is provided at all outputs toenhance dc and dynamic performance in high fan-out applications.