Datasheets
SN74ALS161BD by: Texas Instruments

Synchronous 4-Bit Binary Counters 16-SOIC 0 to 70

Part Details for SN74ALS161BD by Texas Instruments

Results Overview of SN74ALS161BD by Texas Instruments

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

Applications Education and Research Space Technology Computing and Data Storage Financial Technology (Fintech) Aerospace and Defense Electronic Manufacturing Automotive

SN74ALS161BD Information

SN74ALS161BD by Texas Instruments is a Counter.
Counters are under the broader part category of Logic Components.

Digital logic governs the behavior of signals in electronic circuits, enabling complex decisions based on simple binary inputs (yes/no). Logic components perform operations from these signals. Read more about Logic Components on our Logic part category page.

Available Datasheets

Part # Manufacturer Description Datasheet
SN74ALS161BDR Texas Instruments Synchronous 4-Bit Binary Counters 16-SOIC 0 to 70
SN74ALS161BD Texas Instruments Synchronous 4-Bit Binary Counters 16-SOIC 0 to 70

Price & Stock for SN74ALS161BD

Part # Distributor Description Stock Price Buy
DISTI # 2156-SN74ALS161BD-ND
DigiKey IC BINARY COUNTER 4-BIT 16SOIC Min Qty: 1 Lead time: 6 Weeks Container: Bulk MARKETPLACE PRODUCT 5058
In Stock
  • 449 $0.6700
$0.6700 Buy Now
DISTI # 296-5024-5-ND
DigiKey IC BINARY COUNTER 4-BIT 16SOIC Min Qty: 1 Lead time: 6 Weeks Container: Tube 412
In Stock
  • 1 $1.3300
  • 10 $0.9650
  • 40 $0.8363
  • 120 $0.7641
  • 280 $0.7219
$0.7219 / $1.3300 Buy Now
DISTI # 86035731
Verical Counter Single 4-Bit Sync Binary UP 16-Pin SOIC Tube RoHS: Compliant Min Qty: 497 Package Multiple: 1 Date Code: 1001 Americas - 3652
  • 497 $0.7556
  • 519 $0.7235
  • 1,000 $0.6833
$0.6833 / $0.7556 Buy Now
DISTI # 86024202
Verical Counter Single 4-Bit Sync Binary UP 16-Pin SOIC Tube RoHS: Compliant Min Qty: 497 Package Multiple: 1 Date Code: 9801 Americas - 1370
  • 497 $0.7556
  • 519 $0.7235
  • 1,000 $0.6833
$0.6833 / $0.7556 Buy Now
DISTI # 86036439
Verical Counter Single 4-Bit Sync Binary UP 16-Pin SOIC Tube RoHS: Compliant Min Qty: 497 Package Multiple: 1 Date Code: 1501 Americas - 800
  • 497 $0.7556
  • 519 $0.7235
  • 1,000 $0.6833
$0.6833 / $0.7556 Buy Now
DISTI # 86035625
Verical Counter Single 4-Bit Sync Binary UP 16-Pin SOIC Tube RoHS: Compliant Min Qty: 497 Package Multiple: 1 Date Code: 0701 Americas - 613
  • 497 $0.7556
  • 519 $0.7235
  • 1,000 $0.6833
$0.6833 / $0.7556 Buy Now
Quest Components IC,COUNTER,UP,4-BIT BINARY,ALS-TTL,SOP,16PIN,PLASTIC 215
  • 1 $1.2912
  • 15 $0.7747
  • 66 $0.6026
$0.6026 / $1.2912 Buy Now
Quest Components IC,COUNTER,UP,4-BIT BINARY,ALS-TTL,SOP,16PIN,PLASTIC 73
  • 1 $2.1520
  • 13 $1.2912
  • 47 $1.0760
$1.0760 / $2.1520 Buy Now
Rochester Electronics SN74ALS161B Synchronous 4-Bit Binary Counters RoHS: Compliant Status: Obsolete Min Qty: 1 6531
  • 1 $0.6431
  • 25 $0.6302
  • 100 $0.6045
  • 500 $0.5788
  • 1,000 $0.5466
$0.5466 / $0.6431 Buy Now

Part Details for SN74ALS161BD

SN74ALS161BD CAD Models

SN74ALS161BD Part Data Attributes

SN74ALS161BD Texas Instruments
Buy Now Datasheet
Compare Parts:
SN74ALS161BD Texas Instruments Synchronous 4-Bit Binary Counters 16-SOIC 0 to 70
Select a part to compare:
Rohs Code Yes
Part Life Cycle Code Obsolete
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code SOIC
Pin Count 16
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Texas Instruments
Additional Feature TCO OUTPUT
Count Direction UP
Family ALS
JESD-30 Code R-PDSO-G16
JESD-609 Code e4
Length 9.9 mm
Load Capacitance (CL) 50 pF
Load/Preset Input YES
Logic IC Type BINARY COUNTER
Max Frequency@Nom-Sup 40000000 Hz
Max I(ol) 0.008 A
Mode of Operation SYNCHRONOUS
Moisture Sensitivity Level 1
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 SOP
Package Equivalence Code SOP16,.25
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Packing Method TUBE
Peak Reflow Temperature (Cel) 260
Power Supply Current-Max (ICC) 21 mA
Prop. Delay@Nom-Sup 20 ns
Propagation Delay (tpd) 20 ns
Qualification Status Not Qualified
Seated Height-Max 1.75 mm
Supply Voltage-Max (Vsup) 5.5 V
Supply Voltage-Min (Vsup) 4.5 V
Supply Voltage-Nom (Vsup) 5 V
Surface Mount YES
Technology TTL
Temperature Grade COMMERCIAL
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form GULL WING
Terminal Pitch 1.27 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) NOT SPECIFIED
Trigger Type POSITIVE EDGE
Width 3.9 mm
fmax-Min 40 MHz

Alternate Parts for SN74ALS161BD

This table gives cross-reference parts and alternative options found for SN74ALS161BD. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of SN74ALS161BD, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
DM74ALS161BMX Fairchild Semiconductor Corporation Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, PDSO16, 0.150 INCH, MS-012, SOIC-16 SN74ALS161BD vs DM74ALS161BMX
74ALS161BD Rochester Electronics LLC Check for Price Binary Counter, SN74ALS161BD vs 74ALS161BD
Part Number Manufacturer Composite Price Description Compare
74ALS161BD NXP Semiconductors Check for Price IC ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, PLASTIC, SOT-108, SO-14, Counter SN74ALS161BD vs 74ALS161BD
SN74ALS161BDR Texas Instruments Check for Price Synchronous 4-Bit Binary Counters 16-SOIC 0 to 70 SN74ALS161BD vs SN74ALS161BDR
8302201EX Signetics Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, CDIP16, CERAMIC, DIP-16 SN74ALS161BD vs 8302201EX
83022012X Signetics Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, CQCC20, CERAMIC, LCC-20 SN74ALS161BD vs 83022012X
74ALS161BD-T NXP Semiconductors Check for Price IC ALS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, PLASTIC, SOT-108, SO-14, Counter SN74ALS161BD vs 74ALS161BD-T
83022012A Signetics Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, CQCC20, CERAMIC, LCC-20 SN74ALS161BD vs 83022012A
83022012A Defense Logistics Agency Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, CQCC20, CERAMIC, LCC-20 SN74ALS161BD vs 83022012A
54ALS161/BEAJC Motorola Semiconductor Products Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, CDIP16, CERDIP-16 SN74ALS161BD vs 54ALS161/BEAJC
8302201EA Defense Logistics Agency Check for Price Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, TTL, CDIP16, CERAMIC, DIP-16 SN74ALS161BD vs 8302201EA
SNJ54ALS161BJ Texas Instruments $12.1038 Synchronous 4-Bit Binary Counters 16-CDIP -55 to 125 SN74ALS161BD vs SNJ54ALS161BJ

SN74ALS161BD Related Parts

SN74ALS161BD Frequently Asked Questions (FAQ)

  • The maximum clock frequency of the SN74ALS161BD is 40 MHz, but it can vary depending on the operating conditions and the load capacitance.

  • To ensure proper power and decoupling, use a 0.1 μF ceramic capacitor between VCC and GND, and a 10 μF electrolytic capacitor between VCC and GND, with a 0.1 μF ceramic capacitor in parallel. Place the capacitors as close to the device as possible.

  • The recommended input rise and fall time for the SN74ALS161BD is 3 ns or less to ensure proper operation.

  • No, the SN74ALS161BD is a 5V device and is not compatible with 3.3V systems. Using it in a 3.3V system may result in unreliable operation or damage to the device.

  • The asynchronous reset input (CLR) should be tied to VCC through a pull-up resistor (e.g., 1 kΩ) to ensure that it is not left floating. This prevents accidental resets and ensures proper operation.