HEF4528BF [NXP]
Dual monostable multivibrator; 双单稳多谐振荡器型号: | HEF4528BF |
厂家: | NXP |
描述: | Dual monostable multivibrator |
文件: | 总9页 (文件大小:107K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
• The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF4528B
MSI
Dual monostable multivibrator
January 1995
Product specification
File under Integrated Circuits, IC04
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
output pulse is determined by the external timing
DESCRIPTION
components Ct and Rt.
The HEF4528B is a dual retriggerable-resettable
monostable multivibrator. Each multivibrator has an active
LOW input (I0), and active HIGH input (I1), an active LOW
clear direct input (CD), an output (O) and its complement
(O), and two pins for connecting the external timing
components (CTC(1), RCTC).
A HIGH to LOW transition on I0 when I1 is LOW or a LOW
to HIGH transition on I1 when I0 is HIGH produces a
positive pulse (LOW-HIGH-LOW) and O and a negative
pulse (HIGH-LOW-HIGH) on O if the CD is HIGH. A LOW
An external timing capacitor (Ct ) must be connected
between CTC and RCTC and an external resistor (Rt) must
be connected between RCTC and VDD. The duration of the
(1) Always connected to ground.
Fig.2 Pinning diagram.
HEF4528BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4528BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4528BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
PINNING
I0A, 0B
I
input (HIGH to LOW triggered)
input (LOW to HIGH triggered)
clear direct input (active LOW)
output
I1A, I1B
CDA, CDB
OA, OB
OA, OB
complementary output (active LOW)
CTC A, CTC B external capacitor connections (1)
RCTC A
RCTC B
,
external capacitor/ resistor connections
FAMILY DATA, IDD LIMITS category MSI
Fig.1 Functional diagram.
See Family Specifications
on CD forces O LOW, O HIGH and inhibits any further
pulses until CD is HIGH.
January 1995
2
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
Fig.3 Logic diagram (one monostable multivibrator).
January 1995
3
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
FUNCTION TABLE
INPUTS
OUTPUTS
I0
I1
CD
H
O
O
L
H
X
H
X
L
L
H
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
4.
5.
6.
= positive-going transition
= negative-going transition
= positive or negative output pulse; width is determined by Ct and Rt
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
TYPICALEXTRAPOLATION
FORMULA
SYMBOL
MIN.
TYP. MAX.
Propagation delays
I0, I1 → O
5
140
50
280
100
70
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
113 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
128 ns + (0,55 ns/pF) CL
49 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
78 ns + (0,55 ns/pF) CL
29 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
93 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
HIGH to LOW
10
15
5
tPHL
tPLH
tPHL
tPLH
tTHL
tTLH
35
I0, I1 → O
155
60
305
115
80
LOW to HIGH
10
15
5
40
CD → O
105
40
210
85
HIGH to LOW
10
15
5
30
60
CD → O
120
50
240
105
70
LOW to HIGH
10
15
5
35
Output transition
times
60
120
60
10 ns
+
(1,0 ns/pF) CL
10
15
5
30
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
HIGH to LOW
20
40
60
120
60
10 ns
+
(1,0 ns/pF) CL
LOW to HIGH
10
15
30
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
20
40
January 1995
4
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; input transition times ≤ 20 ns; Rt = 5 kΩ; Ct = 15 pF
VDD
V
TYPICAL FORMULA FOR P (µW)
2
Dynamic power
5
4000 fi + ∑ (foCL) × VDD
20 000 fi + ∑ (foCL) × VDD
59 000 fi + ∑ (foCL) × VDD
where
2
2
dissipation per
package (P)
10
15
fi = input freq. (MHz)
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns; see also waveforms Fig.5.
VDD
SYMBOL MIN. TYP. MAX.
V
Recovery time
for CD
5
10
15
5
0
0
−75
−30
−25
25
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
%
tRCD
tWI0L
tWI1H
tWCDL
tsu
0
Minimum I0
50
30
20
50
30
20
60
35
25
0
pulse width; LOW
10
15
5
15
10
Minimum I1
25
pulse width; HIGH
10
15
5
15
10
Minimum CD
30
pulse width; LOW
10
15
5
15
10
Set-up time
−105
−40
−25
235
155
140
5,45
4,95
4,85
±3
to avoid change
in output
CD → I0 or I1
10
15
5
0
0
Output O pulse
width; HIGH
−
10
15
5
tWOH
tWOH
∆tWO
∆tWO
−
note 1
note 2
note 3
−
Output O pulse
width; HIGH
−
10
15
5
−
−
Change in output O
pulse width over
temperature
−
10
15
5
−
±2
%
−
±2
%
Change in output O
pulse width over
VDD
−
±2
%
10
15
−
±1
%
VDD ± 5%
−
±1
%
January 1995
5
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
VDD
V
SYMBOL MIN. TYP. MAX.
External timing
resistor
5
5
5
5
−
−
2000
2000
2000
kΩ
kΩ
kΩ
10
15
5
Rt
Ct
−
External timing
capacitor
no limits
no limits
no limits
10
15
Notes
1. Rt = 5 kΩ; Ct = 15 pF; for other Rt, Ct combinations and Ct < 0,01 µF see graph Fig.4.
2. Rt = 10 kΩ; Ct = 1000 pF; for other Rt, Ct combinations and Ct > 0,01 µF use formula tWO = K.Rt.Ct.
where: tWO = output pulse width (s)
Rt = external timing resistor (Ω)
Ct = external timing capacitor (F)
K = 0,42 for VDD = 5 V
K = 0,32 for VDD = 10 V
K = 0,30 for VDD = 15 V
3. Tamb = −40 to +85 °C; ∆tWO is referenced to tWO at Tamb = 25 °C.
January 1995
6
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
Fig.4 Output pulse width (tWO) as a function of external timing capacitor (Ct).
January 1995
7
Philips Semiconductors
Product specification
HEF4528B
MSI
Dual monostable multivibrator
Fig.5 Waveforms showing minimum I0, I1 and O pulse widths, set-up and recovery times. Set-up and recovery
times are shown as positive values but may be specified as negative values.
APPLICATION INFORMATION
An example of an application for the HEF4528B is:
• Non-retriggerable monostable multivibrator
Fig.6 Two examples for a non-retriggerable monostable multivibrator using half of HEF4528B (LOW to HIGH
and HIGH to LOW triggered).
January 1995
8
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