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HD74HC243
Quad. Bus Transceivers (with noninverted 3-state outputs)
REJ03D0596-0200 (Previous ADE-205-473) Rev.2.00 Jan 31, 2006
Description
The HD74HC243 is a noninverting buffer. Each device has one active high enable (GBA), and one active low enable (GAB). GBA enables the A output and GAB enables the B outputs. The device does not have schmitt trigger inputs.
Features
* * * * * * High Speed Operation: tpd = 10 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 HD74HC243P HD74HC243FPEL Package Type DILP-14 pin SOP-14 pin (JEITA) Package Code (Previous Code) PRDP0014AB-B (DP-14AV) PRSP0014DF-B (FP-14DAV) Package Abbreviation P FP -- EL (2,000 pcs/reel) Taping Abbreviation (Quantity)
Note: Please consult the sales office for the above package availability.
Function Table
Control Inputs GAB H L H L H L X I O Z : : : : : : high level low level irrelevant input output high-impedance GBA H H L L A O Z Z I Data Port Status B I Z Z O
Rev.2.00 Jan 31, 2006 page 1 of 6
HD74HC243
Pin Arrangement
GAB NC 1A 2A 3A 4A GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VCC GBA NC 1B 2B 3B 4B
(Top view)
Logic Diagram
1 of 4 Transceivers VCC
A
VCC B
GBA
GAB
Rev.2.00 Jan 31, 2006 page 2 of 6
HD74HC243
Absolute Maximum Ratings
Item Supply voltage range Input / Output voltage Input / Output diode current Output current VCC, GND current Power dissipation Storage temperature Symbol VCC VIN, VOUT IIK, IOK IO ICC or IGND PT Tstg Ratings -0.5 to 7.0 -0.5 to VCC +0.5 20 35 75 500 -65 to +150 Unit V V mA mA mA mW
C
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.
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 C ns Conditions
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.
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 -- -- -- -- -- -- 2.0 4.5 6.0 -- -- 0.0 0.0 0.0 -- -- -- -- -- -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.26 0.26 0.5 0.1 4.0 Ta = -40 to+85C Unit Min Max 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.13 5.63 -- -- -- -- -- -- -- -- -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.33 0.33 5.0 1.0 40 V Test Conditions
VIL
V
Output voltage
VOH
V
Vin = VIH or VIL IOH = -20 A
IOH = -6 mA IOH = -7.8 mA V Vin = VIH or VIL IOL = 20 A
VOL
IOL = 6 mA IOL = 7.8 mA A Vin = VIH or VIL, Vout = VCC or GND A Vin = VCC or GND A Vin = VCC or GND, Iout = 0 A
Off-state output current Input current Quiescent supply current
IOZ Iin ICC
Rev.2.00 Jan 31, 2006 page 3 of 6
HD74HC243
Switching Characteristics
(CL = 50 pF, Input tr = tf = 6 ns)
Item Propagation delay time Symbol VCC (V) tPHL 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 Output rise/fall time Input capacitance tTLH tTHL Cin 2.0 4.5 6.0 -- Ta = 25C Min Typ Max -- -- 90 -- 10 18 -- -- 15 -- -- 90 -- 10 18 -- -- 15 -- -- 150 -- 14 30 -- -- 26 -- -- 150 -- 15 30 -- -- 26 -- -- 150 -- 18 30 -- -- 26 -- -- 150 -- -- -- -- -- -- 20 -- -- 4 -- 5 30 26 60 12 10 10 Ta = -40 to +85C Unit Min Max -- 115 ns -- 23 -- 20 -- 115 ns -- 23 -- 20 -- 190 ns -- 38 -- 33 -- 190 ns -- 38 -- 33 -- 190 ns -- 38 -- 33 -- 190 ns -- -- -- -- -- -- 38 33 75 15 13 10 ns Test Conditions
tPLH
Output enable time
tZL
tZH
Output disable time
tLZ
tHZ
pF
Rev.2.00 Jan 31, 2006 page 4 of 6
HD74HC243
Test Circuit
VCC VCC
GAB
Output 1 k B or A S1 OPEN GND CL = 50 pF VCC
Pulse Generator Zout = 50
See Function Table
Input
GBA
A or B TEST t PLH / t PHL t ZH/ t HZ t ZL / t LZ S1 OPEN GND VCC
Note : 1. CL includes probe and jig capacitance.
Waveforms
* Waveform - 1
tr 90 % 50 % 10 % t PLH 90 % 50 % 10 % t TLH 90 % 50 % 10 % t PHL 90 % 50 % 10 % t THL tf VCC GND
Input A or B
VOH VOL
Output B or A
* Waveform - 2
GAB or GBA 90 % 50 %
tf
tr 90 % 50 % 10 % t ZL 10 % t LZ 50 % t ZH t HZ 90 % VCC GND VOH
Waveform - A
10 % VOL VOH VOL
Waveform - B
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.
Rev.2.00 Jan 31, 2006 page 5 of 6
HD74HC243
Package Dimensions
JEITA Package Code P-DIP14-6.3x19.2-2.54 RENESAS Code PRDP0014AB-B Previous Code DP-14AV MASS[Typ.] 0.97g
D
14
8
1 b3
7
Z
E
Reference Symbol
Dimension in Millimeters Min Nom 7.62 19.2 6.3 20.32 7.4 5.06 0.51 0.40 0.48 1.30 0.19 0 2.29 2.54 0.25 0.31 15 2.79 2.39 2.54 0.56 Max
A
A1
e1 D E
L
A A1 bp
e
bp
e1
c
b3 c
e Z
( Ni/Pd/Au plating )
L
JEITA Package Code P-SOP14-5.5x10.06-1.27
RENESAS Code PRSP0014DF-B
Previous Code FP-14DAV
MASS[Typ.] 0.23g
*1
D 8
F
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
14
bp
HE
E
Index mark
*2
c
Reference Symbol
Dimension in Millimeters Min Nom 10.06 5.50 Max 10.5
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
D E A2 A1 0.00
7 bp x M L1
0.10
0.20 2.20
A bp b1 c c
1
0.34
0.40
0.46
0.15
0.20
0.25
A
HE
0 7.50 7.80 1.27
8 8.00
A1
y L
e x y
0.12 0.15 1.42 0.50
1
Detail F
Z L L 0.70 1.15
0.90
Rev.2.00 Jan 31, 2006 page 6 of 6
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