74lvth244b NXP Semiconductors, 74lvth244b Datasheet

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74lvth244b

Manufacturer Part Number
74lvth244b
Description
3.3 V Octal Buffer/line Driver; 3-state
Manufacturer
NXP Semiconductors
Datasheet
1. General description
2. Features
3. Quick reference data
The 74LVT244B; 74LVTH244B is a high-performance BiCMOS product designed for V
operation at 3.3 V.
This device is an octal buffer that is ideal for driving bus lines. The device features two
output enable inputs (1OE and 2OE), each controlling four of the 3-state outputs.
I
I
I
I
I
I
I
I
I
I
I
I
Table 1.
GND = 0 V; T
Symbol Parameter
t
t
PLH
PHL
74LVT244B; 74LVTH244B
3.3 V octal buffer/line driver; 3-state
Rev. 03 — 3 March 2006
Octal bus interface
3-state buffers
Speed upgrade of 74LVT244A
Output capability: +64 mA and 32 mA
TTL input and output switching levels
Input and output interface capability to systems at 5 V supply
Bus hold data inputs eliminate need for external pull-up resistors to hold unused inputs
Power-up 3-state
Live insertion and extraction permitted
No bus current loading when output is tied to 5 V bus
Latch-up protection:
ESD protection:
N
N
N
JESD78: exceeds 500 mA
HBM EIA/JESD22-A114-C exceeds 2000 V
MM EIA/JESD22-A115-A 200 V
LOW-to-HIGH propagation
delay nAn to nYn
HIGH-to-LOW propagation
delay nAn to nYn
Quick reference data
amb
= 25 C.
Conditions
C
C
L
L
= 50 pF; V
= 50 pF; V
CC
CC
= 3.3 V
= 3.3 V
Min
-
-
Product data sheet
Typ
1.9
2.0
Max
-
-
Unit
ns
ns
CC

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74lvth244b Summary of contents

Page 1

... V octal buffer/line driver; 3-state Rev. 03 — 3 March 2006 1. General description The 74LVT244B; 74LVTH244B is a high-performance BiCMOS product designed for V operation at 3.3 V. This device is an octal buffer that is ideal for driving bus lines. The device features two output enable inputs (1OE and 2OE), each controlling four of the 3-state outputs. ...

Page 2

... C to +85 C 74LVT244BDB +85 C 74LVT244BPW +85 C 74LVTH244BD +85 C 74LVTH244BDB +85 C 74LVTH244BPW +85 C 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B Quick reference data …continued = 25 C. amb Conditions input capacitance 3 output capacitance outputs disabled 3.0 V ...

Page 3

... Philips Semiconductors 5. Functional diagram Fig 1. Logic symbol 6. Pinning information 6.1 Pinning Fig 3. Pin configuration SO20, SSOP20 and TSSOP20 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B 1A0 1Y0 2 18 1A1 1Y1 4 16 1A2 1Y2 6 14 1A3 1Y3 8 12 1OE 1 2A0 2Y0 11 9 2A1 ...

Page 4

... Function table Table 4. Control nOE HIGH voltage level LOW voltage level don’t care high-impedance OFF-state. 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B Pin description Pin Description 1 1 output enable input 2 1 data input data output data input 1 5 ...

Page 5

... Symbol Parameter amb t/ V 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B Limiting values Conditions supply voltage input voltage output voltage output in OFF-state or HIGH-state input clamping current V < output clamping current V < output current output in LOW-state ...

Page 6

... OFF I bus hold current data input HOLD I external current into output EX I power-up/power-down O(pu/pd) output current I OFF-state output current OZ I quiescent supply current CC 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B Conditions 100 3 ...

Page 7

... HIGH-level PHZ nOE to nYn t output disable time from LOW-level PLZ nOE to nYn [1] Typical values are measured at V 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B …continued Conditions per input pin 3 3 one input at V 0.6 V and other CC inputs GND ...

Page 8

... Philips Semiconductors 12. Waveforms Fig 4. Propagation delay input (nAn) to output (nYn) Fig 5. 3-state output enable and disable times Table 9. Input V M 1.5 V 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B V I nAn input GND t PLH V OH nYn output V OL Measurement points are given in Table V and V are typical voltage output drop that occur with the output load ...

Page 9

... Philips Semiconductors Fig 6. Load circuitry for switching times Table 10. Input V I 2.7 V 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B negative V M pulse positive V M pulse PULSE GENERATOR Test data is given in Table 10. Definitions test circuit Load resistor ...

Page 10

... Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. OUTLINE VERSION IEC SOT163-1 075E04 Fig 7. Package outline SOT163-1 (SO20) 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B scale (1) ( ...

Page 11

... max. 0.21 1. 0.25 0.05 1.65 Note 1. Plastic or metal protrusions of 0.2 mm maximum per side are not included. OUTLINE VERSION IEC SOT339-1 Fig 8. Package outline SOT339-1 (SSOP20) 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B 2.5 scale (1) ( ...

Page 12

... Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION IEC SOT360-1 Fig 9. Package outline SOT360-1 (TSSOP20) 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B 2.5 scale ...

Page 13

... Product data sheet 74LVT244B; 74LVTH244B Data sheet status Change notice Product data sheet - 4: Added type numbers 74LVTH244BD, 74LVTH244BDB and 74LVTH244BPW. Product specification - Product specification - Rev. 03 — 3 March 2006 3.3 V octal buffer/line driver; 3-state Supersedes 74LVT244B_2 (9397 750 11918) ...

Page 14

... For additional information, please visit: http://www.semiconductors.philips.com For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com 74LVT_LVTH244B_3 Product data sheet 74LVT244B; 74LVTH244B [3] Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. ...

Page 15

... Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 17 Contact information Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 74LVT244B; 74LVTH244B 3.3 V octal buffer/line driver; 3-state Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © Koninklijke Philips Electronics N.V. 2006. For more information, please visit: http://www.semiconductors.philips.com. ...

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