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HD74HCT125, HD74HCT126
Quad. Bus Buffer Gates (with 3-state outputs)
REJ03D0657-0200 (Previous ADE-205-545) Rev.2.00 Mar 30, 2006
Description
The HD74HCT125, HD74HCT126 require the 3-state control input C to be taken high to put the output into the high impedance condition, whereas the HD74HCT125, HD74HCT126 requires the control input to be low to put the output into high impedance.
Features
* * * * * * * LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A to Y) = 12 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 A max Low Quiescent Supply Current: ICC (static) = 4 A max (Ta = 25C) Ordering Information
Part Name HD74HCT125P HD74HCT125FPEL HD74HCT126FPEL HD74HCT125TELL HD74HCT126TELL Package Type DILP-14 pin SOP-14 pin (JEITA) TSSOP-14 pin Package Code (Previous Code) PRDP0014AB-B (DP-14AV) PRSP0014DF-B (FP-14DAV) PTSP0014JA-B (TTP-14DV) P FP T Package Abbreviation Taping Abbreviation (Quantity) -- EL (2,000 pcs/reel) ELL (2,000 pcs/reel)
Note: Please consult the sales office for the above package availability.
Function Table
Inputs C HCT125 HCT126 X L H H L L H L H High level Low level Irrelevant Off (high-impedance) state of a 3-state output. A HCT125 Z L H Output Y HCT126 Z L H
H: L: X: Z:
Rev.2.00 Mar 30, 2006 page 1 of 8
HD74HCT125, HD74HCT126
Pin Arrangement
* HD74HCT125
1C 1A 1Y 2C 2A 2Y GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VCC 4C 4A 4Y 3C 3A 3Y
(Top view)
* HD74HCT126
1C 1A 1Y 2C 2A 2Y GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VCC 4C 4A 4Y 3C 3A 3Y
(Top view)
Rev.2.00 Mar 30, 2006 page 2 of 8
HD74HCT125, HD74HCT126
Absolute Maximum Ratings
Item Supply voltage range Input voltage Output voltage Output current DC current drain per VCC, GND DC input diode current DC output diode current Power dissipation per package Storage temperature Symbol VCC VIN VOUT IOUT ICC, IGND IIK IOK PT Tstg Rating -0.5 to +7.0 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 35 75 20 20 500 -65 to +150 Unit V V V mA 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 4.5 to 5.5 0 to VCC -40 to 85 0 to 500 Unit V V Conditions
C
ns VCC = 4.5 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 Output voltage Symbol VIH VIL VOH VOL Off-state output current Input current Quiescent supply current IOZ Iin ICC VCC (V) 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 5.5 5.5 5.5 Min 2.0 -- 4.4 4.18 -- -- -- -- -- Ta = 25C Typ Max -- -- -- 0.8 -- -- -- -- -- 0.1 -- 0.26 -- 0.5 -- -- 0.1 4.0 Ta = -40 to+85C Min Max 2.0 -- -- 0.8 4.4 -- 4.13 -- -- 0.1 -- 0.33 -- 5.0 -- -- 1.0 40 Unit V V V V A A A Test Conditions
Vin = VIH or VIL IOH = -20 A IOH = -6 mA Vin = VIH or VIL IOL = 20 A IOL = 6 mA Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 A
Rev.2.00 Mar 30, 2006 page 3 of 8
HD74HCT125, HD74HCT126
Switching Characteristics
(CL = 50 pF, Input tr = tf = 6 ns)
Item Propagation delay time Output enable time Output disable time Output rise/fall time Input capacitance Symbol VCC (V) tPHL tPLH tZL tZH tLZ tHZ tTLH tTHL Cin 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 -- Ta = 25C Ta = -40 to +85C Min Typ Max Min Max -- 12 20 -- 25 -- 12 20 -- 25 -- 12 30 -- 38 -- 12 30 -- 38 -- 15 30 -- 38 -- 15 30 -- 38 -- 4 12 -- 15 -- 4 12 -- 15 -- 5 10 -- 10 Unit ns ns ns ns pF Test Conditions
Test Circuit
VCC VCC
See Function Table
Input
C
Output 1 k S1 CL = 50 pF
Pulse generator ZOUT = 50
A
Y
*1
OPEN See under table GND
TEST tPLH / tPHL tZH / tHZ tZL / tLZ Note: CL includes the probe and jig capacitance.
S1 OPEN GND VCC
Rev.2.00 Mar 30, 2006 page 4 of 8
HD74HCT125, HD74HCT126 Waveforms * HD74HCT125
* Waveform - 1
tr 90 % 1.3 V 10 % tPLH 90 % 1.3 V 10 % tPHL tf VCC 0V
Input A
VOH Output Y 1.3 V 1.3 V VOL
* Waveform - 2
90 % 1.3 V
tf
tr 90 % 1.3 V 10 % tZL 10 % tLZ VCC 0V VOH
Input C
Waveform - A
1.3 V tZH tHZ
10 % VOL 90 % VOH VOL
Waveform - B
1.3 V
Notes : 1. tr 6 ns, tf 6 ns 2. Input waveform : PRR 1 MHz, duty cycle 50% 3. Waveform- A is for an output with internal conditions such that the output is low except when disabled by the output control. 4. Waveform- B is for an output with internal conditions such that the output is high except when disabled by the output control.
Rev.2.00 Mar 30, 2006 page 5 of 8
HD74HCT125, HD74HCT126 Waveforms * HD74HCT126
* Waveform - 1
tr 90 % 1.3 V 10 % tPLH 90 % 1.3 V 10 % tPHL tf VCC 0V
Input A
VOH Output Y 1.3 V 1.3 V VOL
* Waveform - 2
tr 90 % 1.3 V 10 % tZL 90 % 1.3 V
tf VCC 10 % tLZ 0V VOH
Input C
Waveform - A
1.3 V tZH tHZ
10 % VOL 90 % VOH VOL
Waveform - B
1.3 V
Notes : 1. tr 6 ns, tf 6 ns 2. Input waveform : PRR 1 MHz, duty cycle 50% 3. Waveform- A is for an output with internal conditions such that the output is low except when disabled by the output control. 4. Waveform- B is for an output with internal conditions such that the output is high except when disabled by the output control.
Rev.2.00 Mar 30, 2006 page 6 of 8
HD74HCT125, HD74HCT126
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
A
E
Reference Symbol
A1
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 19.2 20.32 6.3 7.4 5.06
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 2.39 2.54
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
14
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
HE
E
Index mark
*2
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
7 bp x M L1
Reference Dimension in Millimeters Symbol
c
A1
y
L
Detail F
D E A2 A1 A bp b1 c c1 HE e x y Z L L1
Min Nom Max 10.06 10.5 5.50
0.00 0.10 0.20 2.20 0.34 0.40 0.46 0.15 0.20 0.25 0 8 7.50 7.80 8.00 1.27 0.12 0.15 1.42 0.50 0.70 0.90 1.15
Rev.2.00 Mar 30, 2006 page 7 of 8
A
HD74HCT125, HD74HCT126
JEITA Package Code P-TSSOP14-4.4x5-0.65 RENESAS Code PTSP0014JA-B Previous Code TTP-14DV MASS[Typ.] 0.05g
*1
D
F 8
14
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
HE
*2
E
Index mark
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
c
7 bp x M L1
Reference Dimension in Millimeters Symbol
A1
L
y
Detail F
D E A2 A1 A bp b1 c c1 HE e x y Z L L1
Min Nom Max 5.00 5.30 4.40
0.03 0.07 0.10 1.10 0.15 0.20 0.25 0.10 0.15 0.20 0 8 6.20 6.40 6.60 0.65 0.13 0.10 0.83 0.4 0.5 0.6 1.0
Rev.2.00 Mar 30, 2006 page 8 of 8
A
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