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PDF HEF4049B Data sheet ( Hoja de datos )
| Número de pieza | HEF4049B | |
| Descripción | HEX inverting buffers | |
| Fabricantes | NXP Semiconductors | |
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HEF4049B
Hex inverting buffers
Rev. 9 — 18 November 2011
Product data sheet
1. General description
The HEF4049B provides six inverting buffers with high current output capability suitable
for driving TTL or high capacitive loads. Since input voltages in excess of the buffers’
supply voltage are permitted, the buffers may also be used to convert logic levels of up to
15 V to standard TTL levels. Their guaranteed fan-out into common bipolar logic elements
is shown in Table 3.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
2. Features and benefits
Accepts input voltages in excess of the supply voltage
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from 40 C to +85 C
Complies with JEDEC standard JESD 13-B
3. Applications
LOCMOS (Local Oxidation CMOS) to DTL/TTL converter
HIGH sink current for driving two TTL loads
HIGH-to-LOW level logic conversion
4. Ordering information
Table 1. Ordering information
All types operate from 40 C to +85 C.
Type number
Package
Name
Description
HEF4049BP
DIP16
plastic dual in-line package; 16 leads (300 mil)
HEF4049BT
SO16
plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT38-4
SOT109-1
1 page  
NXP Semiconductors
HEF4049B
Hex inverting buffers
11. Dynamic characteristics
Table 7. Dynamic characteristics
VSS = 0 V; CL = 50 pF; tr = tf 20 ns; Tamb = 25 C; unless otherwise specified.
Symbol Parameter
Conditions
VDD
Extrapolation formula
tPHL HIGH to LOW
nA to nY;
5 V [1] 26 ns + (0.18 ns/pF)CL
propagation delay see Figure 5
10 V
11 ns + (0.08 ns/pF)CL
15 V
9 ns + (0.05 ns/pF)CL
tPLH LOW to HIGH
nA to nY;
5 V [1] 23 ns + (0.55 ns/pF)CL
propagation delay see Figure 5
10 V
14 ns + (0.23 ns/pF)CL
15 V
12 ns + (0.16 ns/pF)CL
tTHL HIGH to LOW output see Figure 5 5 V [1] 3 ns + (0.35 ns/pF)CL
transition time
10 V
3 ns + (0.14 ns/pF)CL
15 V
2 ns + (0.09 ns/pF)CL
tTLH LOW to HIGH output see Figure 5 5 V [1] 10 ns + (1.00 ns/pF)CL
transition time
10 V
9 ns + (0.42 ns/pF)CL
15 V
6 ns + (0.28 ns/pF)CL
Min Typ Max Unit
- 35 70 ns
- 15 30 ns
- 12 25 ns
- 50 100 ns
- 25 50 ns
- 20 40 ns
- 20 40 ns
- 10 20 ns
- 7 14 ns
- 60 120 ns
- 30 60 ns
- 20 40 ns
[1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
Table 8. Dynamic power dissipation PD
PD can be calculated from the formulas shown. VSS = 0 V; tr = tf 20 ns; Tamb = 25 C.
Symbol Parameter
VDD Typical formula for PD (W)
where:
PD
dynamic power 5 V
PD = 2500 fi + (fo CL) VDD2
fi = input frequency in MHz;
dissipation
10 V
PD = 11000 fi + (fo CL) VDD2
fo = output frequency in MHz;
15 V
PD = 35000 fi + (fo CL) VDD2
CL = output load capacitance in pF;
VDD = supply voltage in V;
(fo CL) = sum of the outputs.
HEF4049B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 18 November 2011
© NXP B.V. 2011. All rights reserved.
5 of 12
5 Page 
NXP Semiconductors
HEF4049B
Hex inverting buffers
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. NXP
Semiconductors accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
16.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
17. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
HEF4049B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 18 November 2011
© NXP B.V. 2011. All rights reserved.
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