Datasheet

ManualsBrandsFAIRCHILD SEMICONDUCTOR ManualsLogic ICsLogic IC - Demultiplexer, decoder Decoder/demultiplexer Single supply SOIC 16

November 1988

Revised November 1999

74AC139 • 74ACT139 Dual 1-of-4 Decoder/Demultiplexer

74AC139 • 74ACT139

Dual 1-of-4 Decoder/Demultiplexer

General Description

The AC/ACT139 is a high-speed, dual 1-of-4 decoder/

demultiplexer. The device has two independent decoders,

each accepting two inputs and providing four mutually-

exclusive active-LOW outputs. Each decoder has an

active-LOW Enable input which can be used as a data

input for a 4-output demultiplexer. Each half of the AC/

ACT139 can be used as a function generator providing all

four minterms of two variables.

Features

■ I

reduced by 50%

■ Multifunction capability

■ Two completely independent 1-of-4 decoders

■ Active LOW mutually exclusive outputs

■ Outputs source/sink 24 mA

■ ACT139 has TTL-compatible inputs

Ordering Code:

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Connection Diagram Pin Descriptions

FACT is a trademark of Fairchild Semiconductor Corporation.

Order Number Package Number Package Description

74AC139SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body

74AC139SJ M16D 16-Lead Small Outline Package (SOIC), EIAJ Type II, 5.3mm Wide

74AC139MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74AC139PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

74ACT139SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body

74ACT139SJ M16D 16-Lead Small Outline Package (SOIC), EIAJ Type II, 5.3mm Wide

74ACT139MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74ACT139PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Pin Names Description

, A

Address Inputs

Enable Inputs

–O

Outputs

Summary of content (9 pages)

PAGE 1
Revised November 1999 74AC139 • 74ACT139 Dual 1-of-4 Decoder/Demultiplexer General Description Features The AC/ACT139 is a high-speed, dual 1-of-4 decoder/ demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutuallyexclusive active-LOW outputs. Each decoder has an active-LOW Enable input which can be used as a data input for a 4-output demultiplexer.
PAGE 2
74AC139 • 74ACT139 Logic Symbols Functional Description The AC/ACT139 is a high-speed dual 1-of-4 decoder/ demultiplexer. The device has two independent decoders, each of which accepts two binary weighted inputs (A0–A1) and provides four mutually exclusive active-LOW outputs (O0–O3). Each decoder has an active-LOW enable (E). When E is HIGH all outputs are forced HIGH. The enable can be used as the data input for a 4-output demultiplexer application.
PAGE 3
Recommended Operating Conditions −0.5V to +7.0V Supply Voltage (VCC) DC Input Diode Current (IIK) VI = −0.5V −20 mA VI = VCC + 0.5V +20 mA DC Input Voltage (VI) Supply Voltage (VCC) −0.5V to VCC + 0.5V VO = VCC + 0.5V +20 mA 0V to VCC −40°C to +85°C Minimum Input Edge Rate (∆V/∆t) AC Devices DC Output Source VIN from 30% to 70% of VCC ±50 mA VCC @ 3.3V, 4.5V, 5.
PAGE 4
74AC139 • 74ACT139 DC Electrical Characteristics for ACT Symbol Parameter Minimum HIGH Level VIH VIL VOH TA = +25°C VCC (V) Typ 4.5 1.5 TA = −40°C to +85°C Guaranteed Limits 2.0 2.0 Input Voltage 5.5 1.5 2.0 2.0 Maximum LOW Level 4.5 1.5 0.8 0.8 Input Voltage 5.5 1.5 0.8 0.8 Minimum HIGH Level 4.5 4.49 4.4 4.4 Output Voltage 5.5 5.49 5.4 5.4 Units V V V Conditions VOUT = 0.1V or VCC − 0.1V VOUT = 0.1V or VCC − 0.1V IOUT = −50 µA VIN = VIL or VIH VOL 4.5 3.86 3.
PAGE 5
Symbol tPLH Parameter Propagation Delay An to On tPHL Propagation Delay An to On tPLH Propagation Delay En to On tPHL Propagation Delay En to On VCC TA = +25°C (V) CL = 50 pF TA = −40°C to +85°C CL = 50 pF Units (Note 8) Min Typ Max Min Max 5.0 1.5 6.0 8.5 1.5 9.5 ns 5.0 1.5 6.0 9.5 1.5 10.5 ns 5.0 2.5 7.0 10.0 2.0 11.0 ns 5.0 2.0 7.0 9.5 1.5 10.5 ns Note 8: Voltage Range 5.0 is 5.0V ± 0.5V Capacitance Typ Units CIN Symbol Input Capacitance Parameter 4.
PAGE 6
74AC139 • 74ACT139 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body Package Number M16A www.fairchildsemi.
PAGE 7
4AC139 • 74ACT139 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ Type II, 5.3mm Wide Package Number M16D 7 www.fairchildsemi.
PAGE 8
74AC139 • 74ACT139 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 www.fairchildsemi.
PAGE 9
74AC139 • 74ACT139 Dual 1-of-4 Decoder/Demultiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N16E Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.