HEF4938BT NXP Semiconductors, HEF4938BT Datasheet - Page 4

• Manufacturer Part Number: HEF4938BT
• Manufacturer: NXP Semiconductors

Specifications of HEF4938BT

• Logic Family: 4000
• High Level Output Current: -4.2mA
• Low Level Output Current: 4.2mA
• Quiescent Current: 20uA
• Number Of Elements: 2
• Operating Temperature Classification: Automotive
• Operating Supply Voltage (max): 15V
• Operating Supply Voltage (typ): 3.3/5/9/12V
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Technology: CMOS
• Abs. Propagation Delay Time: 460ns
• Operating Supply Voltage (min): 3V
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
Table 2.
7. Functional description
Table 3.
[1]
HEF4938B_5
Product data sheet
Symbol
1CEXT, 2CEXT
1REXT/CEXT, 2REXT/CEXT
1CD, 2CD
1B, 2B
1A, 2A
1Q, 2Q
1Q, 2Q
V
V
Inputs
nA
↓
H
X
Fig 4.
SS
DD
H = HIGH voltage level; L = LOW voltage level; X = don’t care; ↑ = positive-going transition; ↓ = negative-going transition;
(1) The external timing resistor R
(2) The external timing capacitor C
= one HIGH level output pulse, with the pulse width determined by C
= one LOW level output pulse, with the pulse width determined by C
accuracy of t
Connection of the external timing components R
Pin description
Function table
6.2 Pin description
W
(nQ, nQ output), depends on the leakage current of the capacitor C
nB
L
↑
X
Pin
1, 15
2, 14
3, 13
4, 12
5, 11
6, 10
7, 9
8
16
EXT
EXT
minimum value is 5 kΩ. Its maximum permissible resistance, which holds the specified
minimum value is 2000 pF with no upper limit
Description
external capacitor connection (always connected to ground)
external capacitor/resistor connection
direct reset input (active LOW)
input (LOW-to-HIGH triggered)
input (HIGH-to-LOW triggered)
output
complementary output (active LOW)
ground supply voltage
supply voltage
nA
nB
Rev. 05 — 6 January 2010
nCD
H
H
L
nCEXT
C EXT
nCD
nREXT/CEXT
EXT
R EXT
nQ
nQ
and C
T = R
001aae735
EXT
EXT
EXT
EXT
and R
T
V
and R
Outputs
nQ
L
DD
× C
Dual precision monostable multivibrator
EXT
EXT
EXT
.
;
EXT
and the leakage of the HEF4938B
HEF4938B
nQ
H
© NXP B.V. 2010. All rights reserved.
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