Product Bulletin
The Advanced High-Speed
CMOS (AHC/AHCT)
Logic Family
Today’s designers are looking
beyond HC (HCMOS) to meet the
increasing demand for designs
without sacrificing low noise levels
or low cost. Many designers are
looking to TI’s AHC/AHCT
(Advanced High-Speed CMOS
logic) to provide a reliable and
effortless migration path from HC.
Outlining a reliable migration
path is not a simple task for a logic
supplier. The supplier must focus
on the present and future needs of
its customers, while still maintaining the successful features of
proven technology. With AHC, TI
has done just that. AHC is every-
Key features
• Same low noise as HC (<0.8 V)
• Three times the speed of HC
Typical propagation delays of 5.4ns (‘244)
• One-half the static power consumption
of HC (40 µA)
• Wide range of special devices
(WidebusTM and PicoGate logic)
• Five worldwide sources of advanced
HCMOS products
• SAME MARKET PRICE AS HC
thing a designer embraces in HC,
PLUS three times the speed, onehalf the static power consumption,
and several more product choices.
AHC offers WidebusTM versions of
its most popular functions, like the
A Reliable and Effortless
Migration Path for
HCMOS Users
A Reliable and Effortless Migration Path for HCMOS Users
’16244, ’16373, and ’16245. Also
available is a complete line of
single-gate devices, PicoGate Logic,
ideally suited for board routing
simplicity and last-minute design
modifications.
AHC/AHCT Input and Output Levels
AHC is designed with
CMOS inputs and CMOS
outputs. AHCT is designed
with TTL inputs and CMOS
outputs.
AHC Performance
tpd
VCC Range (Recommended)
typ.
max
Volp
typ.
AHC04
2-5.5 V
5.3 ns
7.5 ns
0.4 V
AHC244
2-5.5 V
5.4 ns
7.5 ns
0.5 V
AHC16244
2-5.5 V
5.4 ns
8.0 ns
0.5 V
AHC1G04
2-5.5 V
5.3 ns
7.5 ns
0.4 V
Note: AHC devices are also specified for 3.3-V operation. Please consult individual device data sheets for 3.3-VCC data.
AHC/AHCT Widebus
TM
Like TI’s AHC octals and gates,
AHC Widebus ICs offer
increased performance over
two eight-bit HCMOS devices.
With typical propagation delay
times of 5.4 ns and static power
consumption of 40µA (half that
of HCMOS), AHC Widebus
components will allow
designers to increase system
speeds while lowering the
system’s overall power
requirements. Additionally,
as with all of TI's AHC components, the Widebus devices
offer the same low noise
found in HCMOS.
Packaging Options
With multiple power and
ground pins distributed
throughout, the AHC Widebus
devices can lower noise by 20
percent over two equivalent
HCMOS octal devices, providing greater signal integrity
throughout the system.
Device Number
Pins
Function
PDIP
SOIC
SSOP
TSSOP
TVSOP
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
+
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
+
+
+
✔
✔
+
+
+
+
+
+
+
+
SOT
AHC Gates/MSI/Octals (SN74AHCxxx)
SSN74AHC00
SN74AHC02
SN74AHC04
SN74AHCU04
SN74AHC08
SN74AHC14
SN74AHC32
SN74AHC74
SN74AHC86
SN74AHC123A
SN74AHC125
SN74AHC126
SN74AHC138
SN74AHC139
SN74AHC157
SN74AHC158
SN74AHC164
SN74AHC174
SN74AHC175
SN74AHC240
SN74AHC244
SN74AHC245
SN74AHC273
SN74AHC373
SN74AHC374
SN74AHC540
SN74AHC541
SN74AHC573
SN74AHC574
SN74AHC595
14
14
14
14
14
14
14
14
14
16
14
14
16
16
16
16
16
16
16
20
20
20
20
20
20
20
20
20
20
16
Quad 2-Input NAND Gate
Quad 2-Input NOR Gate
Hex Inverter
Unbuffered Hex Inverter
Quad 2-Input AND Gate
Hex Inverter With Schmitt Trigger
Quad 2-Input OR Gate
Dual D-Type Flip-Flop with Preset and Clear
Quad Exclusive-OR Gate
Dual Monostable Multivibrator
Quad Bus Buffer Gate with 3-State Outputs
Quad Bus Buffer Gate with 3-State Outputs
3-to-8 Decoder/Demultiplexer
Dual 2-to-4 Line Decoder/Demultiplexer
Quad 2-to-1 Data Selector/Multiplexer
Quad 2-to-1 Data Selector/Multiplexer
8-Bit Parallel-Out Serial Shift Register
Hex D-Type Flip-Flop
Quad D-Type Flip-Flop with Clear
Octal Buffer/Driver
Octal Buffer/Driver
Octal Bus Transceiver
Octal D-Type Flip-Flop With Clear
Octal D-Type Transparent Latch
Octal D-Type Flip-Flop
Inverting Octal Buffer/Driver
Octal Buffer/Driver
Octal D-Type Transparent Latch
Octal D-Type Flip-Flop
8-Bit Shift Register
AHC Single Gates (SN74AHC1Gxxx)
SN74AHC1G00
SN74AHC1G02
SN74AHC1G04
SN74AHC1GU04
SN74AHC1G08
SN74AHC1G14
SN74AHC1G32
SN74AHC1G86
SN74AHC1G125
5
5
5
5
5
5
5
5
5
✔
✔
✔
✔
✔
✔
✔
✔
+
Single 2-Input Positive-NAND Gate
Single 2-Input Positive NOR Gate
Single Inverter Gate
Unbuffered Single Inverter Gate
Single 2-Input Positive-AND Gate
Single Schmitt-Trigger Inverter Gate
Single 2-Input Positive-OR Gate
Single 2-Input Exclusive-OR Gate
Single Bus Buffer with 3-State Output
AHC Widebus (SN74AHC16xxx)
SN74AHC16240
SN74AHC16244
SN74AHC16245
SN74AHC16373
SN74AHC16374
SN74AHC16540
SN74AHC16541
48
48
48
48
48
48
48
✔
✔
✔
✔
✔
✔
✔
16-Bit Buffer/Driver
16-Bit Buffer/Driver
16-Bit Bus Transceiver
16-Bit D-Type Transparent Latch
16-Bit D-Type Flip-Flop
16-Bit Inverting Buffer/Driver
16-Bit Buffer/Driver
✔ - Available
Note: There are several suppliers of Advanced
HCMOS devices worldwide. AHC is a replacement for
HC and is equivalent to VHC.
✔
✔
✔
✔
✔
✔
✔
+ - Planned
✔
✔
✔
✔
✔
✔
✔
Device Number
Pins
Function
PDIP
SOIC
SSOP
TSSOP
TVSOP
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
+
+
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
+
+
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
+
+
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
+
+
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
✔
✔
+
✔
✔
✔
✔
+
+
+
+
+
✔
✔
✔
+
✔
✔
✔
✔
✔
✔
+
SOT
AHCT Gates/MSI/Octals (SN74AHCTxxx)
SN74AHCT00
SN74AHCT02
SN74AHCT04
SN74AHCT08
SN74AHCT14
SN74AHCT32
SN74AHCT74
SN74AHCT86
SN74AHCT123A
SN74AHCT125
SN74AHCT126
SN74AHCT138
SN74AHCT139
SN74AHCT157
SN74AHCT158
SN74AHCT164
SN74AHCT174
SN74AHCT175
SN74AHCT240
SN74AHCT244
SN74AHCT245
SN74AHCT273
SN74AHCT373
SN74AHCT374
SN74AHCT540
SN74AHCT541
SN74AHCT573
SN74AHCT574
SN74AHCT595
14
14
14
14
14
14
14
14
16
14
14
16
16
16
16
16
16
16
20
20
20
20
20
20
20
20
20
20
16
Quad 2-Input NAND Gate
Quad 2-Input NOR Gate
Hex Inverter
Quad 2-Input AND Gate
Hex Inverter With Schmitt Trigger
Quad 2-Input OR Gate
Dual D-Type Flip-Flop With Preset and Clear
Quad Exclusive-OR Gate
Dual Monostable Multivibrator
Quad Bus Buffer Gate with 3-State Outputs
Quad Bus Buffer Gate with 3-State Outputs
3-to-8 Decoder/Demultiplexer
Dual 2-to-4 Line Decoder/Demultiplexer
Quad 2-to-1 Data Selector/Multiplexer
Quad 2-to-1 Data Selector/Multiplexer
8-Bit Parallel-Out Serial Shift Register
Hex D-Type Flip-Flop
Quad D-Type Flip-Flop with Clear
Octal Buffer/Driver
Octal Buffer/Driver
Octal Bus Transceiver
Octal D-Type Flip-Flop With Clear
Octal D-Type Transparent Latch
Octal D-Type Flip-Flop
Inverting Octal Buffer/Driver
Octal Buffer/Driver
Octal D-Type Transparent Latch
Octal D-Type Flip-Flop
8-Bit Shift Register
AHCT Single Gates (SN74AHCT1Gxxx)
SN74AHCT1G00
SN74AHCT1G02
SN74AHCT1G04
SN74AHCT1G08
SN74AHCT1G14
SN74AHCT1G32
SN74AHCT1G86
SN74AHCT1G125
5
5
5
5
5
5
5
5
✔
✔
✔
✔
✔
✔
✔
+
Single 2-Input Positive-NAND Gate
Single 2-Input Positive NOR Gate
Single Inverter Gate
Single 2-Input Positive-AND Gate
Single Schmitt-Trigger Inverter Gate
Single 2-Input Positive-OR Gate
Single 2-Input Exclusive-OR Gate
Single Bus Buffer Gate with 3-State Output
AHCT Widebus (SN74AHCT16xxx)
SN74AHCT16240
SN74AHCT16244
SN74AHCT16245
SN74AHCT16373
SN74AHCT16374
SN74AHCT16540
SN74AHCT16541
48
48
48
48
48
48
48
16-Bit Buffer/Driver
16-Bit Buffer/Driver
16-Bit Bus Transceiver
16-Bit D-Type Transparent Latch
16-Bit D-Type Flip-Flop
16-Bit Inverting Buffer/Driver
16-Bit Buffer/Driver
✔
✔
✔
✔
✔
✔
✔
✔ - Available
✔
✔
✔
✔
✔
✔
✔
+ - Planned
For More Information
To find out more about AHC/AHCT logic products from Texas Instruments,
please contact your local TI field sales office or authorized distributor
or visit our website:
http://www.ti.com/sc/docs/asl/families/ahct.htm
✔
✔
✔
✔
✔
✔
✔
Microgate Logic/PicoGate Logic
With their extremely small size,
TI’s single gate AHC/AHCT
logic devices give designers the
ability to greatly simplify design
routing and maximize ASIC
design development. These
devices, AHC Microgate Logic
in the 5-pin SOT-23 and
PicoGate Logic in the 5-pin
SOT-353, allow designers to
place a particular gate function
close to related circuitry, shortening and simplifying routes on
a board. This simple implementation represents a major
advancement over multiplegate devices, which require the
routing of multiple etches from
distinct partitions on a printed
circuit board through one logic
device. These single-gate logic
devices also allow designers to
alter the output of an ASIC
without redesign and re-manufacture, effectively extending
the life of the device and maximizing design investment.
SN 74 AHC 1G 00 DCK
PicoGate
Logic Package
Logic Function
SingleGate
Advanced HCMOS Technology
Logic Identifier
TI Identifier
Pin Layout Table
AHC1G00
2 INPUT NAND GATE
AHC1G08
2 INPUT AND GATE
AHC1G02
2 INPUT NOR GATE
Y=A B
Y=A B
Y = A+B
AHC1G32
2 INPUT OR GATE
AHC1G04
INVERTER
AHC1G14
SCHMITT-TRIGGER INVERTER
Y = A+B
Y=A
Y=A
TI Worldwide Technical Support
Internet
TI Semiconductor Home Page
http://www.ti.com/sc
For support in the following countries, please contact
the sales offices listed below:
Sales Offices
TI Distributors
Australia/New Zealand
http://www.ti.com/sc/docs/distmenu.htm
Melbourne
Phone . . . . . . . . . . . . . . . . . . . . .+61-31-9696-1211
Fax . . . . . . . . . . . . . . . . . . . . . . . .+61-3-9696-1249
Sydney
Phone . . . . . . . . . . . . . . . . . . . . . . .+61-2-910-3100
Fax . . . . . . . . . . . . . . . . . . . . . . . . .+61-2-878-2489
Product Information Centers
Americas
Phone . . . . . . . . . . . . . . . . . . . . . . . . .+1(972) 644-5580
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . .+1(972) 480-7800
Email . . . . . . . . . . . . . . . . . . . . . .sc-infomaster@ti.com
Europe, Middle East, and Africa
Phone
Deutsch . . . . . . . . . . . . . . . . . . . . .+49-8161 80 3311
English . . . . . . . . . . . . . . . . . . . . .+44-1604 66 3399
Francais . . . . . . . . . . . . . . . . . . . .+33-1-30 70 11 64
Italiano . . . . . . . . . . . . . . . . . . . . .+33-1-30 70 11 67
Fax . . . . . . . . . . . . . . . . . . . . . . . . . .+33-1-30-70 10 32
Email . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .epic@ti.com
Japan
Phone
International . . . . . . . . . . . . . . . . .+81-3-3457-0972
Domestic . . . . . . . . . . . . . . . . . . . . . .+0120-81-0026
Fax
International . . . . . . . . . . . . . . . . .+81-3-3457-1259
Domestic . . . . . . . . . . . . . . . . . . . . . .+0120-81-0036
Email . . . . . . . . . . . . . . . . . . . . . . . . . .pic-japan@ti.com
Korea
Phone . . . . . . . . . . . . . . . . . . . . . . . . .+82-21-551-2804
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . . .+82-2-551-2828
Email . . . . . . . . . . . . . . . . . . . . . . . . . . .kor@msg.ti.com
Hong Kong
Phone . . . . . . . . . . . . . . . . . . . . . . . . . .+852-2956-7288
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . .+852-2956-2200
Mainland China
Beijing
Phone . . . . . . . . . . . . . . . . . . . . . . . .+86-10-6500-2255
Ext. 3750/3751/3752
Fax . . . . . . . . . . . . . . . . . . . . . . . . . .+86-10-6500-2705
Shanghai
Phone . . . . . . . . . . . . . . . . . . . . . . . .+86-21-6350-9566
Fax . . . . . . . . . . . . . . . . . . . . . . . . . .+86-21-6350-9583
Malaysia
Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . .+603-4502230
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+603-4525595
Philippines
Phone . . . . . . . . . . . . . . . . . . . . . . . . . .+63-2-636-0980
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . . .+63-2-631-7702
Singapore, India, Indonesia, and Thailand
Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . .+65-390-7128
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+65-390-7062
Taiwan
Phone . . . . . . . . . . . . . . . . . . . . . . . . . .+886-2-3771450
Fax . . . . . . . . . . . . . . . . . . . . . . . . . . .+886-2-3772718
Email . . . . . . . . . . . . . . . . . . . . . . . . . .twcn@msg.ti.com
Important Notice: Texas Instruments (TI) reserves the right to make
changes to or to discontinue any product or service identified in this
publication without notice. TI advises its customers to obtain the latest
version of the relevant information to verify, before placing orders, that
the information being relied upon is current.
Please be advised that TI warrants its semiconductor products and
related software to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. TI assumes no liability for
applications assistance, software performance, or third-party product
information, or for infringement of patents or services described in this
publication. TI assumes no responsibility for customers’ applications or
product designs.
A052297
Widebus is a trademark of Texas Instruments Incorporated
©Copyright 1997 Texas Instruments Incorporated
SCAB002