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HD74HC91
8-bit Shift Register
REJ03D0696-0200 (Previous ADE-205-429) Rev.2.00 Oct 06, 2005
Description
This serial-in, serial-out, 8-bit shift register is composed of eight R-S master-slave flip-flops, input gating, and a clock drive. Single-rail data and input control are gated through inputs A and B and an internal inverter to form the complementary inputs to the first bit of the shift register. Drive for the internal common clock line is provided by an inverting clock driver. This clock pulse inverter/driver causes these circuits to shift information one bit on the positive edge of an input clock pulse.
Features
* * * * * * High Speed Operation: tpd (Data Word Input to Output) = 21 ns typ (CL = 50 pF) High Output Current: Fanout of 10 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 HD74HC91RPEL Package Type SOP-14 pin (JEDEC) Package Code (Previous Code) PRSP0014DE-A (FP-14DNV) Package Abbreviation RP Taping Abbreviation (Quantity) EL (2,500 pcs/reel)
Function Table
Inputs tn A H L H: L: X: tn : tn + 8 : X High level Low level Irrelevant Reference bit time, clock low Bit time after 8 low-to-high clock transitions B H X L QH H L L Outputs tn + 8 QH L H H
Rev.2.00, Oct 06, 2005 page 1 of 5
HD74HC91
Pin Arrangement
NC NC NC NC Vcc NC NC
1 2 3 4 5 6 7 (Top View) CK QH QH A B
14 13 12 11 10 9 8
QH QH A Inputs B GND Clock NC
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 25 50 500 Unit V V mA mA mA mW
Storage temperature Tstg -65 to +150 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 Note:
*1
Symbol VCC VIN, VOUT Ta tr , tf
Ratings 2 to 6 0 to VCC -40 to 85 0 to 1000 0 to 500
Unit V V C ns
Conditions
VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V
0 to 400 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics.
Rev.2.00, Oct 06, 2005 page 2 of 5
HD74HC91
Electrical Characteristics
Ta = 25C Item Input voltage Symbol VCC (V) VIH 2.0 4.5 6.0 VIL 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 VOL 2.0 4.5 6.0 4.5 Input current Quiescent supply current Iin ICC 6.0 6.0 6.0 Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.18 5.68 -- -- -- -- -- -- -- Typ -- -- -- -- -- -- 2.0 4.5 6.0 -- -- 0.0 0.0 0.0 -- -- -- -- Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.26 0.26 0.1 4.0 Ta = -40 to+85C Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.13 5.63 -- -- -- -- -- -- -- Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.33 0.33 1.0 40 V IOH = -4 mA IOH = -5.2 mA Vin = VIH or VIL IOL = 20 A V Unit V Test Conditions
Output voltage
VOH
V
Vin = VIH or VIL IOH = -20 A
IOL = 4 mA IOL = 5.2 mA A Vin = VCC or GND A Vin = VCC or GND, Iout = 0 A
Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25C Item Maximum clock frequency Propagation delay time Symbol VCC (V) fmax 2.0 4.5 6.0 tPLH 2.0 4.5 6.0 2.0 4.5 6.0 Pulse width tw 2.0 4.5 6.0 2.0 4.5 6.0 Hold time th 2.0 4.5 6.0 2.0 4.5 6.0 Cin -- Min -- -- -- -- -- -- -- -- -- 125 25 21 125 25 21 5 5 5 -- -- -- -- Typ -- -- -- -- 21 -- -- 21 -- -- 9 -- -- 1 -- -- -1 -- -- 5 -- 5 Max 5 25 29 210 42 36 210 42 36 -- -- -- -- -- -- -- -- -- 75 15 13 10 Ta = -40 to +85C Min -- -- -- -- -- -- -- -- -- 156 31 26 156 31 26 5 5 5 -- -- -- -- Max 4 20 24 265 53 45 265 53 45 -- -- -- -- -- -- -- -- -- 95 19 16 10 pF ns ns Clock ns Unit MHz Test Conditions
tPHL
ns
Setup time
tsu
ns
Output rise/fall time Input capacitance
tTLH, tTHL
ns
Rev.2.00, Oct 06, 2005 page 3 of 5
HD74HC91
Test Circuit
VCC VCC
Output
See Function Table
Input Pulse generator Zout = 50 Input Pulse generator Zout = 50
Clock A B
QH CL = 50 pF Output QH CL = 50 pF
Note: C L includes the probe and jig capacitance.
Waveforms
* Waveform - 1
tr
90 %
tf t w (L) VCC
50 % 10 %
Clock
10 %
50 %
50 %
t w (H) t h (H)
90 %
0V t h (L) VCC
t su (H)
90 %
t su (L)
A or B
50 % 10 %
50 % 10 %
50 %
0V t THL
90 % 50 % 10 %
tr
t TLH
90 % 50 % 10 %
tf
VOH VOL
QH t PLH t PHL QH
90 %
t PHL t PLH
90 % 50 % 10 % 50 % 10 %
VOH VOL
t THL
t TLH
Note:
1. Input waveform: PRR 1 MHz, Zo = 50 , tr 6 ns, tf 6 ns
Rev.2.00, Oct 06, 2005 page 4 of 5
HD74HC91
Package Dimensions
JEITA Package Code P-SOP14-3.95x8.65-1.27 RENESAS Code PRSP0014DE-A Previous Code FP-14DNV MASS[Typ.] 0.13g
*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
*2
Index mark
HE
E
c
Reference Symbol
Dimension in Millimeters Min Nom 8.65 3.95 Max 9.05
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
D E A2
7 bp x M L1
A1 A bp b1 c c1
0.10
0.14
0.25 1.75
0.34
0.40
0.46
0.15
0.20
0.25
A
HE
0 5.80 6.10 1.27
8 6.20
A1
L
e x y
0.25 0.15 0.635 0.40
1
y
Detail F
Z L L 0.60 1.08
1.27
Rev.2.00, Oct 06, 2005 page 5 of 5
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