SN74LS190N

Name: SN74LS190N
Rating: 4.5 (10 reviews)

Accurate and robust counter solution for a wide range of applications

4,412 Effective Inventory

SN74LS190N

Effective Inventory4,412

Accurate and robust counter solution for a wide range of applications

Manufacturer Part # : SN74LS190N
Package/Case: PDIP-16
Part Status : OBSOLETE
Brand: Texas Instruments
Product Categories : Counters, Dividers

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SN74LS190N DataSheet

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Details

PRESETTABLE BCD/DECADE UP/DOWN COUNTERSPRESETTABLE 4-BIT BINARY UP/DOWN COUNTERSThe SN54/74LS190 is a synchronous UP/DOWN BCD Decade (8421) Counter and the SN54/74LS191 is a synchronous UP/DOWN Modulo-16 Binary Counter. State changes of the counters are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.An asynchronous Parallel Load (PL) input overrides counting and loads the data present on the Pn inputs into the flip-flops, which makes it possible to use the circuits as programmable counters. A Count Enable (CE) input serves as the carry /borrow input in multi-stage counters. An Up/Down Count Control (U/D) input determines whether a circuit counts up or down. A Terminal Count (TC) output and a Ripple Clock (RC) output provide overflow/underflow indication and make possible a variety of methods for generating carry/borrow signals in multistage counter applications.• Low Power . . . 90 mW Typical Dissipation• High Speed . . . 25 MHz Typical Count Frequency• Synchronous Counting• Asynchronous Parallel Load• Individual Preset Inputs• Count Enable and Up/Down Control Inputs• Cascadable• Input Clamp Diodes Limit High Speed Termination Effects

Key Features

The SN74LS190N has a high-speed operation, making it suitable for many applications
It includes an internal ripple-carry logic circuit for accurate counting
A down/up mode control allows for bidirectional counting operations
The counter can be cleared quickly with the CLEAR input
This device is ideal for use in data processing and transmission systems
The synchronous design ensures reliable counting and clear operations

Application

Time delay
Event counter
Sequence generator

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Pbfree Code	No	Rohs Code	No
Part Life Cycle Code	Obsolete	Part Package Code	DIP
Pin Count !	16	Reach Compliance Code	not_compliant
HTS Code !	8542.39.00.01	Additional Feature !	TCO OUTPUT
Count Direction	BIDIRECTIONAL	Family	LS
JESD-30 Code	R-PDIP-T16	Length	19.305 mm
Load Capacitance (CL)	15 pF	Load/Preset Input	YES
Logic IC Type	DECADE COUNTER	Max Frequency@Nom-Sup	20000000 Hz
Max I(ol)	0.008 A	Mode of Operation !	SYNCHRONOUS
Number of Bits	4	Number of Functions	1
Number of Terminals	16	Operating Temperature-Max	70 °C
Operating Temperature-Min		Package Body Material	PLASTIC/EPOXY
Package Code	DIP	Package Equivalence Code	DIP16,.3
Package Shape	RECTANGULAR	Package Style	IN-LINE
Peak Reflow Temperature (Cel)	NOT SPECIFIED	Power Supplies !	5 V
Power Supply Current-Max (ICC)	35 mA	Propagation Delay (tpd)	36 ns
Qualification Status !	Not Qualified	Seated Height-Max	5.08 mm
Supply Voltage-Max (Vsup)	5.25 V	Supply Voltage-Min (Vsup)	4.75 V
Supply Voltage-Nom (Vsup)	5 V	Surface Mount !	NO
Technology	TTL	Temperature Grade !	COMMERCIAL
Terminal Form !	THROUGH-HOLE	Terminal Pitch !	2.54 mm
Terminal Position	DUAL	Time@Peak Reflow Temperature-Max (s)	NOT SPECIFIED
Trigger Type	POSITIVE EDGE	Width	7.62 mm
fmax-Min	20 MHz	Product Category !	Counter ICs
Mounting Style	Through Hole	Package / Case	PDIP-16
Counter Type	Binary	Logic Family	74LS
Counting Method	Synchronous	Counting Sequence	Up/Down
Operating Supply Voltage !	4.75 V to 5.25 V	Minimum Operating Temperature	0 C
Maximum Operating Temperature !	+ 70 C	Series	SN74LS190
Brand	Texas Instruments	Operating Temperature Range !	0 C to + 70 C
Product Type !	Counter ICs	Subcategory	Counter ICs
Unit Weight	0.057419 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification SN74LS190N PDF Download

FAQs

What is SN74LS190N?

The SN74LS190N is a synchronous, up/down, 4-bit binary counter designed by Texas Instruments. It is ideal for applications requiring simple counting and control of digital signals, such as frequency dividers, event counters, and address decoding.

How Does SN74LS190N Work?

The SN74LS190N works by incrementing or decrementing a 4-bit binary count based on the clock input and control signals. It features synchronous parallel loading and asynchronous master-reset for flexible operation. The counter can be cascaded to create larger count lengths or to implement complex counting sequences.

How Many Pins does SN74LS190N have and What are the Functions of the Pinout Configuration?

The SN74LS190N is housed in a 16-pin PDIP (Plastic Dual In-line Package) package. The pinout configuration includes:

MR (Pin 1): Master reset, asynchronous active LOW input.
CP (Pin 9): Clock input for counting operation.
UP/DOWN (Pin 10): Up/down control input.
D0-D3 (Pins 2, 3, 4, 5): Parallel data input for initial count.
QA-QD (Pins 6, 7, 14, 15): Binary counter outputs Q0-Q3.
NC (Pin 8): No connection.
RC (Pin 16): Ripple carry output for cascading multiple counters.

What are the Pros and Cons of SN74LS190N?

Pros:

Simple Operation: Provides easy-to-use up/down counter functionality for digital systems.
Synchronous Counting: Enables precise timing and parallel loading for flexible control.
Expandable: Can be cascaded to create larger count lengths or more complex counting sequences.
Wide Operating Voltage Range: Supports a wide range of supply voltages for versatile integration.

Cons:

Power Consumption: May have higher power consumption compared to more modern CMOS counterparts.
Obsolete Technology: Being an LS-TTL device, it may be considered obsolete for new designs.
Propagation Delay: Has inherent propagation delays in counting operations, limiting high-speed applications.

Are There Any Equivalents/Alternatives to SN74LS190N for Recommendation?

The CD4510 from Texas Instruments is a comparable synchronous up/down counter with additional features.
Alternatives to the SN74LS190N include the 74HC191 from NXP Semiconductors and the CD4029 from Texas Instruments.

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SN74LS190N

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