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Part: 74LVCH245ADB
Category:
Logic
-> Transceivers
Description: 74LVC245A/74LVCH245A; Octal Bus Transceiver With Direction Pin With 5 V Tolerant Inputs/outputs (3-state);; Package: SOT163-1 (SO20), SOT339-1 (SSOP20), SOT360-1 (TSSOP20)
Company: Philips Semiconductors
Datasheet: Download 74LVCH245ADB datasheet File size : 143 kB
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INTEGRATED CIRCUITS
DATA SHEET
74LVC245A; 74LVCH245A Octal bus transceiver with direction pin with 5 V tolerant input/outputs (3-state)
Product specification Supersedes data of 2002 Jun 20 2003 May 07
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5 V tolerant input/outputs (3-state)
FEATURES · 5 V tolerant inputs/outputs for interfacing with 5 V logic · Wide supply voltage range from 1.2 to 3.6 V · CMOS low power consumption · Direct interface with TTL levels · Inputs accept voltages up to 5.5 V · High-impedance when VCC = 0 V · bus-hold on all data inputs (74LVCH245A only) · Complies with JEDEC standard no. 8-1A · ESD protection: HBM EIA/JESD22-A114-A exceeds 2000 V MM EIA/JESD22-A115-A exceeds 200 V · Specified from -40 to +85 °C and -40 to +125 °C. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf 2.5 ns. SYMBOL tPHL/tPLH CI CI/O CPD Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW). PD = CPD × VCC2 × fi × N + (CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in Volts; N = total load switching outputs; (CL × VCC2 × fo) = sum of the outputs. 2. The condition is VI = GND to VCC. PARAMETER propagation delay An to Bn, Bn to An input capacitance input/output capacitance power dissipation capacitance per buffer VCC = 3.3 V; notes 1 and 2 CONDITIONS CL = 50 pF; VCC = 3.3 V DESCRIPTION
74LVC245A; 74LVCH245A
The 74LVC245A/74LVCH245A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3 or 5 V devices. In 3-state operation outputs can handle 5 V. These features allow the use of these devices as translators in a mixed 3.3 and 5 V environment. The 74LVC245A/74LVCH245A is an octal transceiver with non-inverting 3-state bus compatible outputs in both send and receive directions. The 74LVC245A/74LVCH245A has an output enable (OE) input for easy cascading and a send/receive (DIR) input for direction control. OE controls the outputs so that the buses are effectively isolated.
TYPICAL 2.9 4.0 10.0 15 ns pF pF pF
UNIT
2003 May 07
2
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5 V tolerant input/outputs (3-state)
ORDERING INFORMATION PACKAGE TYPE NUMBER 74LVC245AD 74LVCH245AD 74LVC245ADB 74LVCH245ADB 74LVC245APW 74LVCH245APW 74LVC245ABQ 74LVCH245ABQ FUNCTION TABLE See note 1. INPUT OE L L H Note 1. H = HIGH voltage level; L = LOW voltage level; X = don't care; Z = high-impedance OFF-state. PINNING PIN 1 2 3 4 5 6 7 8 9 10 SYMBOL DIR A0 A1 A2 A3 A4 A5 A6 A7 GND DESCRIPTION direction control input data input/output data input/output data input/output data input/output data input/output data input/output data input/output data input/output ground (0 V) 20 VCC PIN 11 12 13 14 15 16 17 18 19 SYMBOL B7 B6 B5 B4 B3 B2 B1 B0 OE DIR L H X An A=B input Z TEMPERATURE RANGE PINS -40 to +125 °C -40 to +125 °C -40 to +125 °C -40 to +125 °C -40 to +125 °C -40 to +125 °C -40 to +125 °C -40 to +125 °C 20 20 20 20 20 20 20 20 PACKAGE SO20 SO20 SSOP20 SSOP20 TSSOP20 TSSOP20 DHVQFN20 DHVQFN20
74LVC245A; 74LVCH245A
MATERIAL plastic plastic plastic plastic plastic plastic plastic plastic
CODE SOT163-1 SOT163-1 SOT339-1 SOT339-1 SOT360-1 SOT360-1 SOT764-1 SOT764-1
INPUT/OUTPUT Bn input B=A Z
DESCRIPTION data input/output data input/output data input/output data input/output data input/output data input/output data input/output data input/output output enable input (active LOW) supply voltage
2003 May 07
3
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5 V tolerant input/outputs (3-state)
74LVC245A; 74LVCH245A
handbook, halfpage
DIR 1
VCC 20 19 18 17 16 OE B0 B1 B2 B3 B4 B5 B6
handbook, halfpage
DIR 1 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 GND 10
MNA173
20 VCC 19 OE 18 B0 17 B1 16 B2
A0 A1 A2 A3 A4 A5 A6 A7
2 3 4 5
245
15 B3 14 B4 13 B5 12 B6 11 B7
GND*
6 7 8 9 10 GND 11 B7
MCE182
15 14 13 12
* The die substrate is attached to this pad using conductive die attach material. It can not be used as a supply pin or input.
Fig.1 Pin configuration SO20 and (T)SSOP20.
Fig.2 Pin configuration DHVQFN20.
2003 May 07
4
Philips Semiconductors
Product specification
Octal bus transceiver with direction pin with 5 V tolerant input/outputs (3-state)
74LVC245A; 74LVCH245A
handbook, halfpage
1
DIR OE
19
2
handbook, halfpage
A0 B0 18
19 1
G3 3EN1 3EN2 3 A1
B1 4 A2 B2 A3 5 B3 6 A4 B4 7 A5 B5 8 A6 B6 9 A7 B7
17
1 2 3 4 5 6 7 8 9
MNA175
2
18 17 16 15 14 13 12 11
16
15
14
13
12
11
MNA174
Fig.3 Logic symbol (IEEE/IEC).
Fig.4 Logic symbol.
2003 May 07
5
Others parts begin by 74
74-1 74-2 74-3 74-4 74-5 74-6 74-7 74-8 74-9 74-10 74-11 74-12 74-13 74-14 74-15 74-16 74-17 74-18 74-19 74-20 74-21 74-22 74-23 74-24 74-25 74-26 74-27 74-28 74-29 74-30 74-31 74-32 74-33 74-34 74-35 74-36 74-37 74-38 74-39 74-40 74-41 74-42 74-43 74-44 74-45 74-46 74-47 74-48 74-49 74-50 74-51 74-52 74-53 74-54 74-55 74-56 74-57 74-58 74-59 74-60 74-61 74-62
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