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Preliminary Datasheet
RD74HC245A
Octal Bus Transceivers (with 3-state outputs)
Description
R07DS0047EJ0100 Rev.1.00 Jul 20, 2010
Each device has an active low enable input G and a direction control input, DIR. When DIR is high, data flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs. The RD74HC245A transfers true data from one bus to the other. This device does not have schmitt trigger inputs.
Features
High Speed Operation: tpd = 8 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 A max Low Quiescent Supply Current: ICC (static) = 4 A max (Ta = 25C) Ordering Information
Part Name RD74HC245APT0 RD74HC245AFPH0 RD74HC245ARPH0 Package Type DILP-20 pin SOP-20 pin (JEITA) SOP-20 pin (JEDEC) Package Code (Previous Code) PRDP0020AC-B (DP-20NEV) PRSP0020DD-B (FP-20DAV) PRSP0020DC-A (FP-20DBV) P FP RP Package Abbreviation Taping Abbreviation (Quantity) -- H (2,000 pcs/reel) H (1,000 pcs/reel) Surface Treatment 0 (Ni/Pd/Au) 0 (Ni/Pd/Au) 0 (Ni/Pd/Au)
Note:
Please consult the sales office for the above package availability.
Function Table
Enable G L L H H: L: X: high level low level irrelevant Direction Control DIR L H X Operation B data to A bus A data to B bus Isolation
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RD74HC245A
Preliminary
Pin Arrangement
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND 1 2 3 4 5 6 7 8 9 10 (Top view) 20 19 18 17 16 15 14 13 12 11 VCC Enable G B1 B2 B3 B4 B5 B6 B7 B8
Absolute Maximum Ratings
Item Supply voltage range Input / Output voltage Input / Output diode current Output current VCC, GND current Power dissipation Symbol VCC VIN, VOUT IIK, IOK IO ICC or IGND PT Ratings -0.5 to 7.0 -0.5 to VCC +0.5 20 35 75 1375 835 757 -65 to +150 Unit V V mA mA mA mW mW mW Conditions
DIP
SOP TSSOP
Storage temperature Note:
Tstg
C
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.
Recommended Operating Conditions
Item Supply voltage Input / Output voltage Operating temperature Input rise / fall time*1 Symbol VCC VIN, VOUT Ta tr, tf Ratings 2 to 6 0 to VCC -40 to 85 0 to 1000 0 to 500 0 to 400 Unit V V Conditions
C
ns VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V
Notes: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics.
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RD74HC245A
Preliminary
Electrical Characteristics
Item Input voltage Symbol VCC (V) VIH 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 6.0 6.0 6.0 Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.18 5.68 -- -- -- -- -- -- -- -- Ta = 25C Typ Max -- -- -- -- -- -- -- 0.5 -- 1.35 -- 1.8 2.0 -- 4.5 -- 6.0 -- -- -- -- -- 0.0 0.1 0.0 0.1 0.0 0.1 -- 0.26 -- 0.26 -- 0.5 -- -- 0.1 4.0 Ta = -40 to+85C Unit Test Conditions Min Max 1.5 -- V 3.15 -- 4.2 -- -- 0.5 V -- 1.35 -- 1.8 1.9 -- V Vin = VIH or VIL IOH = -20 A 4.4 -- 5.9 -- 4.13 -- IOH = -6 mA 5.63 -- IOH = -7.8 mA -- 0.1 V Vin = VIH or VIL IOL = 20 A -- 0.1 -- 0.1 -- 0.33 IOL = 6 mA -- 0.33 IOL = 7.8 mA -- 5.0 A Vin = VIH or VIL, Vout = VCC or GND -- 1.0 A Vin = VCC or GND -- 40 A Vin = VCC or GND, Iout = 0 A
VIL
Output voltage
VOH
VOL
Off-state output current Input current Quiescent supply current
IOZ Iin ICC
Switching Characteristics
(CL = 50 pF, Input tr = tf = 6 ns)
Item Propagation delay time Symbol VCC (V) tPLH 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 -- Ta = 25C Min Typ Max -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 8 -- -- 8 -- -- 16 -- -- 12 -- -- 17 -- -- 18 -- -- 4 -- 5 90 18 15 90 18 15 150 30 26 150 30 26 150 30 26 150 30 26 60 12 10 10 Ta = -40 to +85C Unit Min Max -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 115 23 20 115 23 20 190 38 32 190 38 32 190 38 32 190 38 32 75 15 13 10 ns Test Conditions
tPHL
ns
Output enable time
tZL
ns
tZH
ns
Output disable time
tLZ
ns
tHZ
ns
Output rise/fall time Input capacitance
tTLH tTHL Cin
ns
pF
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RD74HC245A
Preliminary
Test Circuit
VCC VCC
G
See Function Table
Input Pulse Generator Zout = 50
Output A1 B1 CL = 50 pF DIR TEST t PLH / t PHL t ZH/ t HZ t ZL / t LZ S2 OPEN GND VCC S1 1 K S2 OPEN GND VCC
Note : 1. CL includes probe and jig capacitance. 2. A2-B2, A3-B3, A4-B4, A5-B5, A6-B6, A7-B7, A8-B8 are identical to above load circuit. 3. S1 is a input / output switch.
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RD74HC245A
Preliminary
Waveforms
* Waveform - 1
tr 90 % 50 % 10 % t PLH 90 % Output Y 50 % 10 % t TLH 90 % 50 % 10 % t PHL 90 % 50 % 10 % t THL tf VCC 0V
Input A
VOH VOL
* Waveform - 2
90 % Input G
tf
tr 90 % 50 % 10 % t LZ VCC 0V VOH
50 % 10 % t ZL
Waveform - A t ZH Waveform - B
50 % 10 % t HZ 90 % VOL VOH VOL
50 %
Notes : 1. Input waveform : PRR 1 MHz, duty cycle 50%, tr 6 ns, tf 6 ns 2. Waveform- A is for an output with internal conditions such that the output is low except when disabled by the output control. 3. Waveform- B is for an output with internal conditions such that the output is high except when disabled by the output control. 4. The output are measured one at a time with one transition per measurement.
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RD74HC245A
Preliminary
Package Dimensions
JEITA Package Code P-DIP20-6.3x24.5-2.54 RENESAS Code PRDP0020AC-B Previous Code DP-20NEV MASS[Typ.] 1.26g
D
20
11
1 0.89 b3
10
Z
A1
A
E
Reference Symbol
Dimension in Millimeters
Min
e
bp
e1
c
( Ni/Pd/Au plating )
e1 D E A A1 bp b3 c e Z L
Nom Max 7.62 24.50 25.40 6.30 7.00 5.08
L
0.51 0.40 0.48 0.56 1.30 0.19 0.25 0.31 0 15 2.29 2.54 2.79 1.27 2.54
JEITA Package Code P-SOP20-5.5x12.6-1.27
RENESAS Code PRSP0020DD-B
Previous Code FP-20DAV
MASS[Typ.] 0.31g
*1
D 11
F
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
20
bp
E
HE
Index mark
*2
Terminal cross section (Ni/Pd/Au plating)
1 Z e
*3
c
Reference Symbol
Dimension in Millimeters
Min
10 bp x M L1
S
L
yS
Detail F
D E A2 A1 A bp b1 c c1 HE e x y Z L L1
Nom Max 12.60 13.0 5.50 0.10 0.40 0.20 0.20 2.20 0.46 0.25 8 8.00 0.12 0.15 0.80 0.90
0.00 0.34 0.15 0 7.50
A
A1
7.80 1.27
0.50
0.70 1.15
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RD74HC245A
JEITA Package Code P-SOP20-7.5x12.8-1.27 RENESAS Code PRSP0020DC-A Previous Code FP-20DBV MASS[Typ.] 0.52g
Preliminary
*1
D
F 11
20
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
*2
E
HE
Index mark
Terminal cross section (Ni/Pd/Au plating)
1 Z e
*3
c
Reference Symbol
Dimension in Millimeters
10 bp x M L1
S
L
yS
Detail F
Min Nom Max D 12.80 13.2 E 7.50 A2 A1 0.10 0.20 0.30 A 2.65 bp 0.34 0.40 0.46 b1 c 0.20 0.25 0.30 c1 0 8 HE 10.00 10.40 10.65 e 1.27 x 0.12 y 0.15 Z 0.935 L 0.40 0.70 1.27 L1 1.45
A
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A1
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Notice
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