HEF4541BT NXP Semiconductors, HEF4541BT Datasheet - Page 4

• Manufacturer Part Number: HEF4541BT
• Description: IC, 4000 LOCMOS, SMD, 4541, SOIC14
• Manufacturer: NXP Semiconductors
• Type: Programmabler

Specifications of HEF4541BT

• Clock External Input: No
• Supply Voltage Range: 5V To 15V
• Digital Ic Case Style: SOIC
• No. Of Pins: 14
• Operating Temperature Range: -40°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Frequency: 100kHz
• # Internal Timers: 1
• Quiescent Current: 80uA
• Propagation Delay Time: 1150ns
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3/5/9/12V
• Operating Supply Voltage (max): 15V
• Package Type: SO
• High Level Output Current: -4.2mA
• Low Level Output Current: 4.2mA
• Pin Count: 14
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Base Number: 4541
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
PINNING
FREQUENCY SELECTION TABLE
RC oscillator
January 1995
A
MODE
AR
MR
PH
R
C
RS
0
TC
TC
Programmable timer
A
, A
Typical formula for oscillator
frequency:
H
H
L
L
0
Fig.4
1
f
osc
=
---------------------------------
2 3 R
A
External component connection for RC
oscillator; R
H
H
L
L
1
address inputs
mode select input
auto reset input
master reset input
phase input
external resistor connection (R
external capacitor connection (C
external resistor connection (R
external clock input
1
t
C
COUNTER STAGES n
t
NUMBER OF
S
2 R
13
10
16
8
t
.
t
S
)
) or
t
f
-------- -
f
)
osc
out
65 536
8 192
1 024
=
256
2
n
4
FUNCTION TABLE
Notes
1. For correct power-on reset, the supply voltage should
2. The timer is initialized on a reset pulse and the output
Timing component limitations
The oscillator frequency is mainly determined by
R
R
across the input protection diodes on the frequency. The
stray capacitance C2 should be kept as small as possible.
In consideration of accuracy, C
inherent stray capacitance. R
LOCMOS ‘ON’ resistance in series with it, which typically
is 500
V
The recommended values for these components to
maintain agreement with the typical oscillation formula are:
AR
DD
t
S
C
H
X
X
X
X
X
L
is to minimize the influence of the forward voltage
t
be above 8.5 V. For V
and connect AR to V
changes state after 2
state (latched). Reset of this latch is obtained by
master reset or by a LOW to HIGH transition on the
MODE input.
H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
C
10 k
, provided R
= 15 V.
t
MR
H
L
L
L
L
L
L
100 pF, up to any typical value,
at V
INPUTS
R
DD
PH
t
X
X
X
X
X
H
L
= 5 V, 300
t
<< R
1 M .
MODE
S
X
X
X
H
X
X
L
and R
DD
n-1
DD
.
counts and remains in that
< 8.5 V, disable the autoreset
t
S
at V
MODE
auto reset disabled
auto reset enabled
master reset active
normal operation selected
division to output
single-cycle mode
output initially LOW,
after reset
output initially HIGH,
after reset
must be larger than the
C2 << R
t
must be larger than the
DD
= 10 V and 200
Product specification
HEF4541B
t
C
t
. The function of
(2)
(1)
MSI
at