74HCT191N,652 NXP Semiconductors, 74HCT191N,652 Datasheet - Page 13

• Manufacturer Part Number: 74HCT191N,652
• Description: IC COUNTER UP/DOWN SYNC 16-DIP
• Manufacturer: NXP Semiconductors
• Series: 74HCTr

Specifications of 74HCT191N,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: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Reset: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 74HCT191N; 74HCT191N; 933670090652

Philips Semiconductors
December 1990
Presettable synchronous 4-bit binary
up/down counter
(1) HC : V
Fig.14 Waveforms showing the up/down count input (U/D) to terminal count and ripple clock output (TC, RC)
(1) HC : V
Fig.15 Waveforms showing the parallel load input (PL) pulse width, removal time to clock (CP) and the output
(1) HC : V
HCT : V
HCT : V
HCT : V
propagation delays.
(Q
M
M
M
M
n
= 50%; V
= 1.3 V; V
= 50%; V
= 1.3 V; V
M
M
) transition times.
= 50%; V
= 1.3 V; V
Fig.13 Waveforms showing the input (PL) to output (Q
I
I
I
I
= GND to V
= GND to V
= GND to 3 V.
= GND to 3 V.
I
I
= GND to V
= GND to 3 V.
CC
CC
CC
.
.
.
13
n
) propagation delays.
74HC/HCT191
Product specification