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HD74LVCR2245A
Octal Bidirectional Transceivers with 3-state Outputs
REJ03D0377-0400 (Previous ADE-205-235B (Z)) Rev.4.00 Aug. 20, 2004
Description
The HD74LVCR2245A has eight buffers with three state outputs in a 20 pin package. When (T / R) is high, data flows from the A inputs to the B outputs, and when (T / R) is low, data flows from the B inputs to the A outputs. A and B bus are separated by making enable input (OE) high level. All outputs, which are designed to sink up to 12mA, include equivalent 26 resistors to reduce overshoot and undershoot. Low voltage and high-speed operation is suitable at battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation.
Features
* * * * * * * * VCC = 1.65 to 5.5 V All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V) All inputs / outputs VI / O (Max) = 5.5 V (@VCC = 0 V or output off state) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25C) High output current 12mA (@VCC = 3.0 to 5.5 V) All outputs have equivalent 26 series resistors, so no external resistors are required Ordering Information
Package Type SOP-20 pin (JEITA) TSSOP-20 pin Package Code FP-20DAV TTP-20DAV Package Abbreviation FP T Taping Abbreviation (Quantity) EL (2,000 pcs/reel) ELL (2,000 pcs/reel)
Part Name HD74LVCR2245AFPEL HD74LVCR2245ATELL
Note: Please consult the sales office for the above package availability.
Function Table
Inputs OE L L H H: High level L: Low level X: Immaterial Z: High impedance T/R L H X Operation B data to A bus A data to B bus Z
Rev.4.00 Aug. 20, 2004 page 1 of 9
HD74LVCR2245A
Pin Arrangement
T/R A0 A1
1 2 3
20 VCC 19 OE 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7
A2 4 A3 A4 A5 A6 A7 5 6 7 8 9
GND 10
(Top view)
Absolute Maximum Ratings
Item Supply voltage Input voltage Output voltage Input diode current Output diode current Output current VCC, GND current Storage temperature Symbol VCC VI VO IIK IOK IO ICC or IGND Tstg Ratings -0.5 to 7.0 -0.5 to 7.0 -0.5 to 7.0 -0.5 to VCC+0.5 -50 -50 50 100 -65 to 150 Unit V V V mA mA mA mA C Conditions
Output "Z" or VCC : OFF Output "H" or "L" VI < 0 VO < 0
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore no two of which may be realized at the same time.
Rev.4.00 Aug. 20, 2004 page 2 of 9
HD74LVCR2245A
Recommended Operating Conditions
Item Supply voltage Input voltage Output voltage Output current Symbol VCC VI VO IOH Ratings 1.65 to 5.5 1.5 to 5.5 0 to 5.5 0 to 5.5 0 to VCC -2 -4 -8 -12 2 4 8 12 0 to 6 -40 to +85 Unit V V V mA Conditions At operation Data retention only Output "Z" or VCC : OFF Output "H" or "L" VCC = 1.65 V VCC = 2.3 V VCC = 2.7 V VCC = 3.0 to 5.5 V VCC = 1.65 V VCC = 2.3 V VCC = 2.7 V VCC = 3.0 to 5.5 V
IOL
mA
Input rise / fall time Operating temperature
tr, tf Ta
ns / V C
Logic Diagram
T/R
1 19 2 18
OE
A0
B0
To seven other channels
Rev.4.00 Aug. 20, 2004 page 3 of 9
HD74LVCR2245A
Electrical Characteristics
(Ta = -40 to 85C) Item Input voltage Symbol VIH VCC (V) 1.65 to 1.95 2.3 to 2.7 2.7 to 3.6 4.5 to 5.5 1.65 to 1.95 2.3 to 2.7 2.7 to 3.6 4.5 to 5.5 1.65 to 5.5 1.65 2.3 2.7 3.0 2.7 3.0 4.5 1.65 to 5.5 1.65 2.3 2.7 3.0 2.7 3.0 4.5 0 to 5.5 1.65 to 5.5 0 1.65 to 3.6 1.65 to 5.5 2.7 to 3.6 3.3 3.3 Min VCCx0.65 1.7 2.0 VCCx0.7 -- -- -- -- VCC-0.2 1.2 1.7 2.2 2.4 2.0 2.0 3.6 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3.4 9.5 Max -- -- -- -- VCCx0.35 0.7 0.8 VCCx0.3 -- -- -- -- -- -- -- -- 0.2 0.45 0.7 0.4 0.55 0.6 0.8 0.8 5 5 5 10 10 500 -- -- Unit V Test Conditions
VIL
V
Output voltage
VOH
V
IOH = -100 A IOH = -2 mA IOH = -4 mA IOH = -6 mA IOH = -8 mA IOH = -12 mA
VOL
V
IOL = 100 A IOL = 2 mA IOL = 4 mA IOL = 6 mA IOL = 8 mA IOL = 12 mA
Input current Off state output current Output leak current Quiescent supply current
IIN IOZ IOFF ICC ICC
A A A A A pF pF
VIN = 0 to 5.5 V VOUT = 0 to 5.5 V VIN or VO = 5.5 V VIN = 3.6 to 5.5 V *1, IO = 0 VIN = VCC or GND VIN = one input at (VCC-0.6)V, other inputs at VCC or GND VIN = VCC or GND VOUT = VCC or GND
Input capacitance Input output capacitance Note:
CIN CI / O
1. This applies in the disabled state only.
Rev.4.00 Aug. 20, 2004 page 4 of 9
HD74LVCR2245A
Switching Characteristics
FROM (Input) A or B (Ta = -40 to 85C) TO (Output) B or A
Item Propagation delay time
Symbol tPLH tPHL
VCC (V) 1.80.15 2.50.2 2.7 3.30.3 5.00.5 1.80.15 2.50.2 2.7 3.30.3 5.00.5 1.80.15 2.50.2 2.7 3.30.3 5.00.5 1.80.15 2.50.2 2.7 3.30.3 5.00.5
Min -- -- -- 1.5 -- -- -- -- 1.5 -- -- -- -- 1.7 -- -- -- -- -- --
Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Max 15.0 9.0 7.3 6.3 4.8 18.0 11.0 9.5 8.2 6.8 16.0 10.0 8.5 7.8 6.6 2.0 2.0 1.5 1.0 1.0
Unit ns
Output enable time
tZH tZL
ns
OE
A or B
Output disable time
tHZ tLZ
ns
OE
A or B
Between output pin skew *1 tOSLH tOSHL
ns
Note:
1. This parameter is characterized but not tested. tOSLH = |tPLHm-tPLHn|, tOSHL = |tPHLm-tPHLn|
Rev.4.00 Aug. 20, 2004 page 5 of 9
HD74LVCR2245A
Test Circuit
(VCC = 1.80.15 V, VCC = 2.50.2 V)
VCC VCC
OE
See Function Table
Input Pulse generator Zout = 50
Output A0 B0 CL = 30 pF T/R VCC (V) 1.80.15 2.50.2 R2
50 Scope
S1 R1 S2 OPEN 2xVCC GND
R1 1 k 500
R2 950 450
Symbol t PLH / t PHL t ZH / t HZ t ZL / t LZ
S2 OPEN GND 2xVCC
Note: 1. C L includes probe and jig capacitance.
(VCC = 2.7 V, VCC = 3.30.3 V, VCC = 5.00.5 V)
VCC VCC
OE
See Function Table
Input Pulse generator Zout = 50
Output A0 B0 CL = 50 pF T/R S1 500 S2 450
50 Scope
OPEN
*1
See under table GND
Symbol t PLH / t PHL t ZH / t HZ t ZL / t LZ Note: 1. C L includes probe and jig capacitance.
S2
Vcc=2.7V, 3.30.3V Vcc=5.00.5V
OPEN GND 6V
OPEN GND 2xVCC
Rev.4.00 Aug. 20, 2004 page 6 of 9
HD74LVCR2245A
(VCC = 1.80.15 V, VCC = 2.50.2 V)
* Waveforms - 1
tr 90 % 50% VCC t PLH 90 % 50% VCC
tf VCC 10 % t PHL GND
Input 10 %
VOH In phase output 50% VCC 50% VCC VOL
* Waveforms - 2
tf 90 % 50% VCC 10 % t ZL 10 % t LZ tr 90 % 50% VCC VCC GND VCC Waveform - A 50% VCC t ZH t HZ VOH - 0.15 V VOL + 0.15 V VOL VOH GND
OE
Waveform - B
50% VCC
Notes: 1. Input waveform : PRR = 10 MHz, duty cycle 50%, t r = 2.0 ns, t f = 2.0 ns 2. Waveform - A shows input conditions such that the output is "L" level when enabled by the output control. 3. Waveform - B shows input conditions such that the output is "H" level when enabled by the output control.
Rev.4.00 Aug. 20, 2004 page 7 of 9
HD74LVCR2245A
(VCC = 2.7 V, VCC = 3.30.3 V, VCC = 5.00.5 V)
* Waveforms - 1
tr 90 % 90 % Vref
tf VIH 10 % t PLH t PHL GND
Input 10 %
Vref
VOH In phase output Vref Vref VOL
* Waveforms - 2
tf 90 % Vref 10 % t ZL 10 % t LZ tr 90 % Vref GND VOH1 Waveform - A Vref t ZH t HZ VOH - 0.3 V VOL + 0.3 V VOL VOH VOL1 TEST VIH Vref VOH1 VOL1
Vcc=2.7V 3.30.3V Vcc=5.00.5V
VIH
OE
Waveform - B
Vref
2.7 V 1.5 V 3V GND
VCC 50%VCC VCC GND
Notes: 1. Input waveform : PRR = 10 MHz, duty cycle 50%, t r = 2.5 ns, t f = 2.5 ns 2. Waveform - A shows input conditions such that the output is "L" level when enabled by the output control. 3. Waveform - B shows input conditions such that the output is "H" level when enabled by the output control.
Rev.4.00 Aug. 20, 2004 page 8 of 9
HD74LVCR2245A
Package Dimensions
As of January, 2002
12.6 13 Max
20
Unit: mm
11
1
10
5.5
0.80 Max
2.20 Max
*0.20 0.05
0.20 7.80 + 0.30 -
1.15
1.27
*0.40 0.06
0.10 0.10
0 - 8
0.70 0.20
0.15
0.12 M
*Pd plating
Package Code JEDEC JEITA Mass (reference value)
FP-20DAV -- Conforms 0.31 g
As of January, 2002
Unit: mm
6.50 6.80 Max 20 11
1
10 0.65 1.0 6.40 0.20 0.65 Max
*0.20 0.05
0.13 M
4.40
*0.15 0.05
1.10 Max
0.10
0.07 +0.03 -0.04
0 - 8
0.50 0.10
*Pd plating
Package Code JEDEC JEITA Mass (reference value)
TTP-20DAV -- -- 0.07 g
Rev.4.00 Aug. 20, 2004 page 9 of 9
Sales Strategic Planning Div.
Keep safety first in your circuit designs!
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
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