74LVC8T245BQ,118 NXP Semiconductors, 74LVC8T245BQ,118 Datasheet

TXRX 8BIT TRANSLATING DHVQFN24

74LVC8T245BQ,118

Manufacturer Part Number
74LVC8T245BQ,118
Description
TXRX 8BIT TRANSLATING DHVQFN24
Manufacturer
NXP Semiconductors
Datasheet

Specifications of 74LVC8T245BQ,118

Logic Family
74LVC
Number Of Channels Per Chip
2
Propagation Delay Time
5.4 ns, 8.9 ns
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.2 V
Maximum Operating Temperature
+ 125 C
Package / Case
DHVQFN-24
Maximum Power Dissipation
500 mW
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-5279-2
1. General description
2. Features and benefits
The 74LVC8T245; 74LVCH8T245 are 8-bit dual supply translating transceivers with
3-state outputs that enable bidirectional level translation. They feature two data
input-output ports (pins An and Bn), a direction control input (DIR), an output enable input
(OE) and dual supply pins (V
any voltage between 1.2 V and 5.5 V making the device suitable for translating between
any of the low voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V and 5.0 V). Pins An, OE and
DIR are referenced to V
transmission from An to Bn and a LOW on DIR allows transmission from Bn to An. The
output enable input (OE) can be used to disable the outputs so the buses are effectively
isolated.
The devices are fully specified for partial power-down applications using I
circuitry disables the output, preventing any damaging backflow current through the
device when it is powered down. In suspend mode when either V
GND level, both A port and B port are in the high-impedance OFF-state.
Active bus hold circuitry in the 74LVCH8T245 holds unused or floating data inputs at a
valid logic level.
74LVC8T245; 74LVCH8T245
8-bit dual supply translating transceiver; 3-state
Rev. 2 — 11 February 2011
Wide supply voltage range:
High noise immunity
Complies with JEDEC standards:
ESD protection:
Maximum data rates:
V
V
JESD8-7 (1.2 V to 1.95 V)
JESD8-5 (1.8 V to 2.7 V)
JESD8C (2.7 V to 3.6 V)
JESD36 (4.5 V to 5.5 V)
HBM JESD22-A114F Class 3A exceeds 4000 V
MM JESD22-A115-B exceeds 200 V
CDM JESD22-C101E exceeds 1000 V
420 Mbps (3.3 V to 5.0 V translation)
210 Mbps (translate to 3.3 V))
140 Mbps (translate to 2.5 V)
75 Mbps (translate to 1.8 V)
CC(A)
CC(B)
: 1.2 V to 5.5 V
: 1.2 V to 5.5 V
CC(A)
CC(A)
and pins Bn are referenced to V
and V
CC(B)
). Both V
CC(A)
and V
CC(B)
CC(B)
CC(A)
. A HIGH on DIR allows
Product data sheet
can be supplied at
or V
OFF
CC(B)
. The I
are at
OFF

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74LVC8T245BQ,118 Summary of contents

Page 1

Rev. 2 — 11 February 2011 1. General description The 74LVC8T245; 74LVCH8T245 are 8-bit dual supply translating transceivers with 3-state outputs that enable bidirectional level translation. They feature two data input-output ports ...

Page 2

... NXP Semiconductors  60 Mbps (translate to 1.5 V)  Suspend mode  Latch-up performance exceeds 100 mA per JESD 78B Class II 24 mA output drive (V   Inputs accept voltages up to 5.5 V Low power consumption: 30 A maximum I   I OFF  Multiple package options Specified from 40 C to +85 C and 40 C to +125 C  ...

Page 3

... NXP Semiconductors Fig 2. Logic diagram (one channel) 5. Pinning information 5.1 Pinning 74LVC8T245 74LVCH8T245 V 1 CC(A) DIR GND 11 GND 12 Fig 3. Pin configuration SOT355-1 (TSSOP24) 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver; 3-state DIR A1 V CC(A) to other seven channels ...

Page 4

... NXP Semiconductors 5.2 Pin description Table 2. Pin description Symbol Pin V 1 CC(A) DIR [1] GND 11 [1] GND 12 [1] GND 21, 20, 19, 18, 17, 16, 15, 14 data input or output CC( CC(B) [1] All GND pins must be connected to ground (0 V). 6. Functional description [1] Table 3. Function table Supply voltage Input ...

Page 5

... NXP Semiconductors Table 4. Limiting values …continued In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter I ground current GND T storage temperature stg P total power dissipation tot [1] The minimum input voltage ratings and output voltage ratings may be exceeded if the input and output current ratings are observed. ...

Page 6

... NXP Semiconductors Table 6. Typical static characteristics recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter I bus hold LOW overdrive BHLO current I bus hold HIGH overdrive BHHO current I OFF-state output current OZ I power-off leakage current OFF C input capacitance I C input/output capacitance ...

Page 7

... NXP Semiconductors Table 7. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions V LOW-level data input IL input voltage V CCI V CCI V CCI V CCI V CCI DIR, OE input V CCI V CCI V CCI V CCI V CCI V HIGH-level output voltage = 100  CCO = 6 mA; V ...

Page 8

... NXP Semiconductors Table 7. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions I bus hold HIGH port BHH current bus hold LOW port BHLO overdrive V CCI current V CCI V CCI V CCI V CCI I bus hold HIGH ...

Page 9

... NXP Semiconductors Table 7. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions I supply current A port CC(A) V CC(A) V CC(A) B port CC(A) V CC(B) V CC(B) A plus B port ( CC(A) I additional per input; CC supply current V CC(A) DIR and OE input; DIR or OE ...

Page 10

... NXP Semiconductors 10. Dynamic characteristics Table 8. Typical dynamic characteristics at V Voltages are referenced to GND (ground = 0 V); for test circuit see Symbol Parameter t propagation delay pd t disable time dis t enable time en [ the same as t and PLH PHL Table 9. Typical dynamic characteristics at V Voltages are referenced to GND (ground = 0 V); for test circuit see ...

Page 11

... NXP Semiconductors Dynamic characteristics for temperature range 40 C to +85 C Table 11. Voltages are referenced to GND (ground = 0 V); for test circuit see Symbol Parameter Conditions = 1.5 V  0 CC(A) t propagation delay disable time dis enable time 1.8 V  0. CC(A) t propagation delay disable time ...

Page 12

... NXP Semiconductors Dynamic characteristics for temperature range 40 C to +125 C Table 12. Voltages are referenced to GND (ground = 0 V); for test circuit see Symbol Parameter Conditions = 1.5 V  0 CC(A) t propagation delay disable time dis enable time 1.8 V  0. CC(A) t propagation delay disable time ...

Page 13

... NXP Semiconductors 11. Waveforms Measurement points are given in V and V are typical output voltage levels that occur with the output load Fig 5. The data input (An, Bn) to output (Bn, An) propagation delay times OE input output LOW-to-OFF OFF-to-LOW output HIGH-to-OFF OFF-to-HIGH Measurement points are given in ...

Page 14

... NXP Semiconductors Test data is given in Table R = Load resistance Load capacitance including jig and probe capacitance Termination resistance External voltage for measuring switching times. EXT Fig 7. Load circuitry for switching times Table 14. Test data Supply voltage Input [ CC(A) CC( CCI [ the supply voltage associated with the data input port. ...

Page 15

... NXP Semiconductors 12. Typical propagation delay characteristics 14 t PHL (ns HIGH to LOW propagation delay ( PHL (ns) 12 (1) (2) (3) 10 (4) (5) ( HIGH to LOW propagation delay ( ( 1.2 V. CC(B) ( 1.5 V. CC(B) ( 1.8 V. CC(B) ( 2.5 V. CC(B) ( 3.3 V. CC(B) ( 5.0 V. CC(B) Fig 8. Typical propagation delay versus load capacitance; T 74LVC_LVCH8T245 Product data sheet 74LVC8T245 ...

Page 16

... NXP Semiconductors 14 t PHL (ns HIGH to LOW propagation delay ( PHL (ns (1) (2) (3) 8 (4) (5) ( HIGH to LOW propagation delay ( ( 1.2 V. CC(B) ( 1.5 V. CC(B) ( 1.8 V. CC(B) ( 2.5 V. CC(B) ( 3.3 V. CC(B) ( 5.0 V. CC(B) Fig 9. Typical propagation delay versus load capacitance; T 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver ...

Page 17

... NXP Semiconductors 14 t PHL (ns HIGH to LOW propagation delay ( PHL (ns (1) 8 (2) (3) (4) ( HIGH to LOW propagation delay ( ( 1.2 V. CC(B) ( 1.5 V. CC(B) ( 1.8 V. CC(B) ( 2.5 V. CC(B) ( 3.3 V. CC(B) ( 5.0 V. CC(B) Fig 10. Typical propagation delay versus load capacitance; T 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver ...

Page 18

... NXP Semiconductors 14 t PHL (ns HIGH to LOW propagation delay ( PHL (ns (1) (2) (3) 6 (4) (5) ( HIGH to LOW propagation delay ( ( 1.2 V. CC(B) ( 1.5 V. CC(B) ( 1.8 V. CC(B) ( 2.5 V. CC(B) ( 3.3 V. CC(B) ( 5.0 V. CC(B) Fig 11. Typical propagation delay versus load capacitance; T 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver ...

Page 19

... NXP Semiconductors 14 t PHL (ns HIGH to LOW propagation delay ( PHL (ns (1) (2) 6 (3) (4) ( HIGH to LOW propagation delay ( ( 1.2 V. CC(B) ( 1.5 V. CC(B) ( 1.8 V. CC(B) ( 2.5 V. CC(B) ( 3.3 V. CC(B) ( 5.0 V. CC(B) Fig 12. Typical propagation delay versus load capacitance; T 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver ...

Page 20

... NXP Semiconductors 14 t PHL (ns HIGH to LOW propagation delay ( PHL (ns (1) 6 (2) (3) (4) 4 (5) ( HIGH to LOW propagation delay ( ( 1.2 V. CC(B) ( 1.5 V. CC(B) ( 1.8 V. CC(B) ( 2.5 V. CC(B) ( 3.3 V. CC(B) ( 5.0 V. CC(B) Fig 13. Typical propagation delay versus load capacitance; T 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver ...

Page 21

... NXP Semiconductors 13. Application information 13.1 Unidirectional logic level-shifting application The circuit given in used in an unidirectional logic level-shifting application. Fig 14. Unidirectional logic level-shifting application Table 15. Name V CC(A) GND A B DIR V CC(B) OE 74LVC_LVCH8T245 Product data sheet 74LVC8T245; 74LVCH8T245 8-bit dual supply translating transceiver; 3-state Figure example of the 74LVC8T245 ...

Page 22

... NXP Semiconductors 13.2 Bidirectional logic level-shifting application Figure 15 level-shifting application. V I/O-1 DIR CTRL Fig 15. Bidirectional logic level-shifting application Table 16 and then from system-2 to system-1. Table 16. State DIR CTRL [ HIGH voltage level LOW voltage level high-impedance OFF-state. 13.3 Power-up considerations The device is designed such that no special power-up sequence is required other than GND being applied first ...

Page 23

... NXP Semiconductors 14. Package outline TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4 pin 1 index 1 DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 0.95 mm 1.1 0.25 0.05 0.80 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. ...

Page 24

... NXP Semiconductors DHVQFN24: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 24 terminals; body 3.5 x 5.5 x 0.85 mm terminal 1 index area terminal 1 index area DIMENSIONS (mm are the original dimensions) (1) A UNIT max. 0.05 0. 0.2 0.00 0.18 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. ...

Page 25

... NXP Semiconductors 15. Abbreviations Table 18. Abbreviations Acronym Description CDM Charged Device Model DUT Device Under Test HBM Human Body Model MM Machine Model 16. Revision history Table 19. Revision history Document ID Release date 74LVC_LVCH8T245 v.2 20110211 • Modifications: Section 2 “Features and benefits” 74LVC_LVCH8T245 v.1 ...

Page 26

... In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or ...

Page 27

... NXP Semiconductors Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. 18. Contact information For more information, please visit: For sales office addresses, please send an email to: 74LVC_LVCH8T245 Product data sheet 74LVC8T245 ...

Page 28

... NXP Semiconductors 19. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 5 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 Functional description . . . . . . . . . . . . . . . . . . . 4 7 Limiting values Recommended operating conditions Static characteristics Dynamic characteristics . . . . . . . . . . . . . . . . . 10 11 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 12 Typical propagation delay characteristics . . 15 13 Application information ...

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