74HC191N,652 NXP Semiconductors, 74HC191N,652 Datasheet - Page 5
![IC COUNTER UP/DOWN SYNC 16DIP](/photos/6/52/65287/568-16-dip_sot38-4_sml.jpg)
74HC191N,652
Manufacturer Part Number
74HC191N,652
Description
IC COUNTER UP/DOWN SYNC 16DIP
Manufacturer
NXP Semiconductors
Series
74HCr
Datasheet
1.74HC191N652.pdf
(14 pages)
Specifications of 74HC191N,652
Package / Case
16-DIP (0.300", 7.62mm)
Logic Type
Binary Counter
Direction
Up, Down
Number Of Elements
1
Number Of Bits Per Element
4
Timing
Synchronous
Count Rate
39MHz
Trigger Type
Positive Edge
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Logic Family
74HC
Number Of Bits
4
Operating Supply Voltage
2 V to 6 V
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Reset
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-1412-5
74HC191N
933669460652
74HC191N
933669460652
Philips Semiconductors
FUNCTION TABLE
TC AND RC FUNCTION TABLE
Notes
1. H = HIGH voltage level
December 1990
parallel load
count up
count down
hold (do nothing)
Presettable synchronous 4-bit binary
up/down counter
L = LOW voltage level
I
X = don’t care
U/D
H
H
H
L
L
L
= LOW-to-HIGH CP transition
= LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition
OPERATING MODE
= one LOW level pulse
= TC goes LOW on a LOW-to-HIGH CP transition
INPUTS
CE
H
H
H
H
L
L
CP
X
X
X
X
Q
PL
H
H
H
H
H
H
L
L
L
L
L
0
Fig.4 Functional diagram.
TERMINAL COUNT STATE
U/D
X
X
H
X
L
Q
H
H
H
L
L
L
5
1
INPUTS
CE
X
X
H
I
I
Q
H
H
H
L
L
L
2
CP
X
X
X
Q
H
H
H
L
L
L
D
3
H
X
X
X
L
n
74HC/HCT191
OUTPUTS
Q
L
H
count up
count down
no change
n
TC
Product specification
H
H
L
L
OUTPUTS
RC
H
H
H
H