HEF4521BT NXP Semiconductors, HEF4521BT Datasheet - Page 8

• Manufacturer Part Number: HEF4521BT
• Description: IC, 4000 LOCMOS, SMD, 4521, SOIC16
• Manufacturer: NXP Semiconductors

Specifications of HEF4521BT

• Clock Frequency: 35MHz
• Count Maximum: 24
• Supply Voltage Range: 4.5V To 15.5V
• Logic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Package /: RoHS Compliant
• Base Number: 4521
• Rohs Compliant: Yes

Philips Semiconductors
APPLICATION INFORMATION
Typical characteristics for crystal oscillator circuit (Fig.6):
January 1995
Crystal characteristics
External resistor/capacitor values
24-stage frequency divider and oscillator
resonance frequency
crystal cut
equivalent resistance; R
R
C
C
(1) Optional for low power operation.
o
T
S
S
Fig.6 Crystal oscillator circuit.
8
CIRCUIT
500 kHz
500
47
82
20
S
1
CIRCUIT
50 kHz
750
6,2
50
82
20
N
Product specification
HEF4521B
UNIT
kHz
k
k
pF
pF
MSI