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SN74HC191N - TI
Manufacturer:
TI
ManyChip's Part#:
MC3021675
Category:
Logic Controller, Logic IC
Package:
PDIP-16
Datasheet:
Datasheet 3D Model
Description:
TEXAS INSTRUMENTS SN74HC191N Binary Synchronous Up / Down Counter, HC Family, 48MHz, 2V to 6V, DIP-16
Stock Locations:
Availability:
272 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 0.88

Updated at 23/10/2025 10:30:15(UTC+8)

Certifications

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Description

The SN74HC191N is a 4-bit synchronous Up/Down Binary Counter operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple-clock) counters. The outputs of the four flip-flops are triggered on a low- to high-level transition of the clock input if the count-enable (CTEN\\) input is low. A high at CTEN\ inhibits counting. The direction of the count is determined by the level of the down/up (D/U\\) input. When D/U\ is low, the counter counts up and when D/U\ is high, it counts down. It features a fully independent clock circuit. Change at the control (CTEN\ and D/U\\) inputs that modifies the operating mode has no effect on the contents of the counter until clocking occurs. The function of the counter is dictated solely by the condition meeting the stable setup and hold times.
Outputs can drive up to 10 LSTTL loads
13ns Typical tpd
Low input current of 1µA Maximum
Single down/up count-control line
Look-ahead circuitry enhances speed of cascaded counters
Fully synchronous in count modes
Asynchronously presettable with load control
80µA Maximum low power consumption
±4mA Output drive at 5V

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SN74HC191N Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	16 Pin
Case/Package	PDIP-16
Supply Voltage (DC)	2.00V ~ 6.00V
Number of Outputs	4 Output
Number of Positions	16 Position
Clock Speed	19 MHz
Number of Bits	4 Bit
Voltage Nodes	6.00 V, 5.00 V, 2.00 V
Output Current Drive	-1.00 mA
Number of Inputs	4 Input
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	2V ~ 6V
Supply Voltage (Max)	6 V
Supply Voltage (Min)	2 V
	Show
Size-Length	19.3 mm
Size-Width	6.35 mm
Size-Height	4.57 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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