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HD74BC373A
Octal D Type Transparent Latches With 3 State Outputs
REJ03D0283-0300Z (Previous ADE-205-009A (Z)) Rev.3.00 Jul.16.2004
Description
The HD74BC373A provides high drivability and operation equal to or better than high speed bipolar standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5 of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight D type latches with three state outputs in a 20 pin package. When the latch enable input is high, the Q outputs will follow the D inputs. When the latch enable goes low, data at the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.
Features
* Input/Output are at high impedance state when power supply is off. * Built in input pull up circuit can make input pins be open, when not used. * TTL level input * Wide operating temperature range input pins Ta = -40 to + 85C * Ordering Information
Part Name HD74BC373AFPEL HD74BC373ATELL Package Type Package Code FP T Package Abbreviation Taping Abbreviation (Quantity) EL (2,000 pcs/reel) ELL (2,000 pcs/reel)
SOP-20 pin (JEITA) FP-20DAV TSSOP-20 pin TTP-20DAV
Note: Please consults the sales office for the above package availability.
Function Table
G H L L L H L X Z : : : : High level Low level Immaterial High impedance X H H L Inputs LE X L H X D Z L H No change Output Q
Rev.3.00, Jul.16.2004, page 1 of 8
HD74BC373A
Pin Arrangement
G 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC 8Q 8D 7D 7Q 6Q 6D 5D 5Q LE
(Top view)
Absolute Maximum Ratings
Item Supply voltage Input diode current Input voltage Output voltage Off state output voltage Symbol VCC IIK VIN VOUT VOUT(off) Rating -0.5 to +7.0 30 -0.5 to +7.5 -0.5 to +7.5 -0.5 to +5.5 Unit V mA V V V
Storage temperature Tstg -65 to +150 C Note: 1. 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 voltage Output voltage Operating temperature Input rise/fall time*1 Note: Symbol VCC VIN VOUT Topr tr, tf 4.5 0 0 -40 0 Min 5.0 -- -- -- -- Typ 5.5 VCC VCC 85 8 Max V V V C ns/V Unit
1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics.
Rev.3.00, Jul.16.2004, page 2 of 8
HD74BC373A
Logic Diagram
G 1D DQ 1Q
2D
DQ
2Q
7D
DQ
7Q
8D LE
DQ
8Q
Rev.3.00, Jul.16.2004, page 3 of 8
HD74BC373A
Electrical Characteristics (Ta = -40C to +85C)
Item Input voltage Output voltage Symbol VIH VIL VOH VOL Input diode voltage Input current VIK II 4.5 4.5 4.5 4.5 4.5 5.5 5.5 5.5 Short circuit output current*1 Off state output current Supply current IOS IOZH IOZL ICCL ICCH ICCZ 5.5 5.5 5.5 5.5 5.5 5.5 VCC(V) Min 2.0 -- 2.4 2.0 -- -- -- -- -- -- -100 -- -- -- -- -- Max -- 0.8 -- -- 0.4 0.5 -1.2 -250 1.0 100 -225 50 -50 29.5 2.5 2.5 V V V V V V V A A A mA A A mA mA mA IOH = -3 mA IOH = -15 mA IOL = 24 mA IOL = 48 mA IIN = -18 mA VIN = 0 V VIN = 5.5 V VIN = 7.0 V VIN = 0 or 5.5 V VO = 2.7 V VO = 0.5 V VIN = 0 or 5.5 V All outputs is "L" VIN = 0 or 5.5 V All outputs is "H" VIN = 0 or 5.5 V All outputs is "Z" Unit Test Conditions
ICCT*2 5.5 -- 1.5 mA VIN = 3.4 or 0.5 V Notes : 1. Not more than one output should be shorted at a time and duration of the short circuit should not exceed one second. 2. When input by the TTL level, it shows ICC increase at per one input pin.
Switching Test Method (CL = 50 pF)
Ta = 25C VCC = 5.0 V Item Propagation DQ delay time LE Q Output enable time Output disable time Setup time Hold time Pulse width Input capacitanse Output capacitance Symbol Min tPLH 3.0 tPHL tPLH tPHL tZH tZL tHZ tLZ tS(H) tS(L) th(H) th(L) tw CIN CO 3.0 3.0 3.0 3.0 3.0 3.0 3.0 2.0 2.0 2.0 2.0 6.0 3.0(Typ) 15.0(Typ) Max 8.0 8.0 8.0 8.0 9.0 9.0 8.0 8.0 -- -- -- -- -- Ta = -40 to 85C VCC = 5.0 V 10% Min 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 2.0 2.0 2.0 2.0 6.0 -- -- Max 10.0 10.0 10.0 10.0 11.0 11.0 10.0 10.0 -- -- -- -- -- Unit Test Conditions ns See under figure ns ns ns ns ns ns pF pF VIN = VCC or GND VO = VCC or GND
Rev.3.00, Jul.16.2004, page 4 of 8
HD74BC373A Test Circuit
VCC VCC
Input Pulse Generator Zout = 50 Pulse Generator Zout = 50
See Function Table
G 1D to 8D 1Q to 8Q LE
Output
Input
500 CL = 50 pF 450 50 Scope
*2 OPEN 7V
Notes:
1. CL includes probe and jig capacitance. 2. Open: tPLH, tPHL, tZH, tHZ, th, tSU, tw 7 V: tZL, tLZ
Rev.3.00, Jul.16.2004, page 5 of 8
HD74BC373A Waveforms-1
tr 90% 1.5 V 10% tr 90% Input D 10% t PLH 90% 10% t PHL 1.5 V 1.5 V VOL 90% 1.5 V 10% tf 3V 0V tf 3V
Input LE
0V VOH
Output Q
Waveforms-2
tr 90% Input LE 10% tr 90% Input D 1.5 V 10% t PLH 90% 1.5 V 10% t PHL 1.5 V 1.5 V VOL 0V VOH Output Q tf 3V 3V
0V
Rev.3.00, Jul.16.2004, page 6 of 8
HD74BC373A Waveforms-3
tr 90% 1.5 V 10% tw ts 90% 1.5 V 10% th 3V Input D 1.5 V 1.5 V 0V tf 3V
Input LE
0V
Notes:
1. tr = 2.5 ns, tf = 2.5 ns 2. Input waveform: PRR =1 MHz, duty cycle 50%
Waveforms-4
tf 90% 1.5 V 10% t ZL t LZ Waveform-A t ZH 1.5 V VOL + 0.3 V t HZ VOH - 0.3 V 1.5 V 0V VOH VOL 3.5 V tr 90% 1.5 V 10% 3V
Input G
0V
Waveform-B
Notes:
1. tr = 2.5 ns, tf = 2.5 ns 2. Input waveform: PRR = 1 MHz, duty cycle 50% 3. Waveform-A shows input conditions such that the output is "L" level when enable by the output control. 4. Waveform-B shows input conditions such that the output is "H" level when enable by the output control.
Rev.3.00, Jul.16.2004, page 7 of 8
HD74BC373A
Package Dimensions
As of January, 2003
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
*Ni/Pd/Au plating
Package Code JEDEC JEITA Mass (reference value)
FP-20DAV -- Conforms 0.31 g
As of January, 2003
Unit: mm
6.50 6.80 Max 20 11
4.40
1
10 0.65 1.0 6.40 0.20 0.65 Max
*0.15 0.05
*0.20 0.05
0.13 M
1.10 Max
0.10
0.07 +0.03 -0.04
0 - 8
0.50 0.10
*Ni/Pd/Au plating
Package Code JEDEC JEITA Mass (reference value)
TTP-20DAV -- -- 0.07 g
Rev.3.00, Jul.16.2004, page 8 of 8
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