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Details, datasheet, quote on part number:74LVCH244ABQ
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| Part: | 74LVCH244ABQ |
| Category: | Logic => Buffers/Drivers |
| Description: | 74LVC244A; 74LVCH244A; Octal Buffer/line Driver With 5 V Tolerant Inputs/outputs; (3-state);; Package: SOT163-1 (SO20), SOT339-1 (SSOP20), SOT360-1 (TSSOP20) |
| Company: | Philips Semiconductors |
| Datasheet: | Download 74LVCH244ABQ datasheet File size : 112 kB |
| Request For quote: | Find where to buy 74LVCH244ABQ
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Datasheet text preview:
INTEGRATED CIRCUITS
DATA SHEET
74LVC244A; 74LVCH244A Octal buffer/line driver with 5 V tolerant inputs/outputs; 3-state
Product specification Supersedes data of 1998 May 20 2003 May 20
Philips Semiconductors
Product specification
Octal buffer/line driver with 5 V tolerant inputs/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 · Bushold on all data inputs (74LVCH244A 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.
74LVC244A; 74LVCH244A
DESCRIPTION The 74LVC244A/74LVCH244A 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 74LVC244A/74LVCH244A is an octal non-inverting buffer/line driver with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Schmitt-trigger action at all inputs makes the circuit highly tolerant for slower input rise and fall times. The 244 is functionally identical to the 240, but the 240 has inverting outputs.
QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf 2.5 ns. SYMBOL tPHL/tPLH CI 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 1An to 1Yn, 2An to 2Yn input capacitance power dissipation capacitance per buffer VCC = 3.3 V; notes 1 and 2 CONDITIONS CL = 50 pF; VCC = 3.3 V TYPICAL 2.8 4.0 10 ns pF pF UNIT
2003 May 20
2
Philips Semiconductors
Product specification
Octal buffer/line driver with 5 V tolerant inputs/outputs; 3-state
ORDERING INFORMATION
74LVC244A; 74LVCH244A
PACKAGE TYPE NUMBER 74LVC244AD 74LVCH244AD 74LVC244ADB 74LVCH244ADB 74LVC244APW 74LVCH244APW 74LVC244ABQ 74LVCH244ABQ FUNCTION TABLE See note 1. INPUT nOE L L H Note 1. H = HIGH voltage level; L = LOW voltage level; X = don't care; Z = high-impedance OFF-state. nAn L H X OUTPUT nYn L H Z TEMPERATURE RANGE -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 PINS 20 20 20 20 20 20 20 20 PACKAGE SO20 SO20 SSOP20 SSOP20 TSSOP20 TSSOP20 DHVQFN20 DHVQFN20 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
2003 May 20
3
Philips Semiconductors
Product specification
Octal buffer/line driver with 5 V tolerant inputs/outputs; 3-state
PINNING PIN 1 2 3 4 5 6 7 8 9 10 SYMBOL 1OE 1A0 2Y0 1A1 2Y1 1A2 2Y2 1A3 2Y3 GND DESCRIPTION output enable input (active LOW) data input bus output data input bus output data input bus output data input bus output ground (0 V) 20 PIN 11 12 13 14 15 16 17 18 19
74LVC244A; 74LVCH244A
SYMBOL 2A3 1Y3 2A2 1Y2 2A1 1Y1 2A0 1Y0 2OE VCC
DESCRIPTION bus input bus output bus input bus output bus input bus output bus input bus output output enable input (active LOW) supply voltage
handbook, halfpage
1OE 1
VCC 20 19 18 17 16 2OE 1Y0 2A0 1Y1 2A1 1Y2 2A2 1Y3
handbook, halfpage
1OE 1 1A0 2 2Y0 3 1A1 4 2Y1 5 1A2 6 2Y2 7 1A3 8 2Y3 9 GND 10
MNA872
20 VCC 19 2OE
1A0 2Y0
2 3 4 5
18 1Y0 17 2Y0 16 1Y1 15 2A1 14 1Y2 13 2A2 12 1Y3 11 2A3
1A1 2Y1 1A2 2Y2 1A3 2Y3
GND(1)
6 7 8 9 10 Top view GND 11 2A3
MBL761
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 SO, (T)SSOP.
Fig.2 Pin configuration DHVQFN20.
2003 May 20
4
Philips Semiconductors
Product specification
Octal buffer/line driver with 5 V tolerant inputs/outputs; 3-state
74LVC244A; 74LVCH244A
handbook, halfpage
1A0 2 1A1 4
handbook, halfpage
1Y0 18 1Y1 16
1
EN 18 16 14 12
6
1A2
1Y2 14
2 4 6 8
8 1
1A3 1OE
1Y3 12
2A0 17 19 EN 2A1 15 11 13 15 17
MNA873
2Y0 3 2Y1 5
9 7 5 3 11 19 2A3 2OE 2Y3 9 13 2A2 2Y2 7
MNA875
Fig.3 Logic symbol (IEEE/IEC).
Fig.4 Functional diagram.
2 handbook, halfpage 1A0
18 1Y0 16 1Y1 2A1 2A0
17
3 2Y0
4 1A1 6
15
5 2Y1
14 1Y2 2A2
1A2
13
7 2Y2
1A3 1OE
8 1
12 1Y3 2A3 2OE
11 19
9 2Y3
MNA874
Fig.5 Logic symbol.
2003 May 20
5
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