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74F3893 Quad futurebus backplane transceiver
Product specification IC15 Data Handbook 1991 Jan 18
Philips Semiconductors
Philips Semiconductors
Product specification
Quad Futurebus backplane transceiver
74F3893
FEATURES
* Quad backplane transceiver * Drives heavily loaded backplanes with equivalent load * Futurebus drivers sink 100mA * Reduced voltage swing (1 volt) produces less noise and
reduces power consumption * High speed operation enhances performance of backplane buses and facilitates incident wave switching * Compatible with IEEE 896 and IEEE 1194.1 Futurebus Standards * Built-in precision band-gap (BG) reference provides accurate receiver thresholds and improved noise immunity * Glitch-free power up/power down operation on all outputs impedances down to 10 ohms
much less for BTL, so is its receiver threshold region, therefore noise margins are excellent. BTL offers low power consumption, low ground bounce, EMI and crosstalk, low capacitive loading, superior noise margin and low propagation delays. This results in a high bandwidth, reliable backplane.
* Pin and function compatible with NSC DS3893
DESCRIPTION
The 74F3893 has four TTL outputs (Rn) on the receiver side with a common receiver enable input (RE). It has four data inputs (Dn) which are also TTL. These data inputs are NANDed with the data enable input (DE). The four I/O pins (bus side) are futurebus compatible, sink a minimum of 100mA, and are designed to drive heavily loaded backplanes with load impedances as low as 10 ohms. All outputs are designed to be glitch-free during power up and down.
TYPE TYPICAL PROPAGATION DELAY 3.0ns TYPICAL SUPPLY CURRENT( TOTAL) 55mA
The 74F3893 is a quad backplane transceivers and is intended to be used in very high speed bus systems. The 74F3893 interfaces to `Backplane Transceiver Logic' (BTL). BTL features a reduced (1V to 2V) voltage swing for lower power consumption and a series diode on the drivers to reduce capacitive loading (< 5pF). Incident wave switching is employed, therefore BTL propagation delays are short. Although the voltage swing is
74F3893
ORDERING INFORMATION
DESCRIPTION ORDER CODE COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F3893A PKG DWG #
20-pin PLCC
SOT380-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS D0 - D3 DE RE I/O0 - I/O3 I/O0 - I/O3 Data inputs Data enable input Receiver enable input Bus inputs Bus outputs DESCRIPTION 74F (U.L.) HIGH/LOW 1.0/0.067 1.0/0.33 1.0/0.067 5.0/0.033 OC/166.7 150/40 LOAD VALUE HIGH/LOW 20A/40A 20A/200A 20A/40A 100A/20A OC/100mA 3mA/24mA
R0 - R7 Receiver outputs Notes to input and output loading and fan out table One (1.0) FAST unit load is defined as: 20A in the high state and 0.6mA in the low state. OC= Open collector.
January 18, 1991
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853-1397 01496
Philips Semiconductors
Product specification
Quad Futurebus backplane transceiver
74F3893
PIN CONFIGURATION
R0 3 D1 R1 LOGIC GND D2 R2 4 5 6 7 8 9 D3 10 11 12 13 PLCC BG BUS D0 VCC GND GND 2 1 20 19 18 I/O0 17 I/O1 16 BUS GND 15 I/O2 14 I/O3
FUNCTION TABLE
INPUTS DE H H H L L L
SF00573
INPUT/ OUTPUT Dn L H Dn X X X I/On H L Dn H H L
OUTPUT Rn L H Z Z L H
OPERATING MODE Transmit to bus
RE L L H H L L
Receiver 3-state, transmit to bus Receive, I/On = inputs
R3 DE
RE BUS GND
LOGIC SYMBOL
2 4 7 9
Notes to function table 1. H = High voltage level 2. L = Low voltage level 3. X = Don't care 4. Z = High impedance "off" state
LOGIC DIAGRAM
D0 2 18 I/O0
D0 D1 D2 D3 11 12 DE RE D1 I/O0 I/O1 1/O2 I/O3 R0 R1 R2 R3 R1 D2 R0
3 4 5 12 7 15 RE I/O2
17
I/O1
18 VCC = Pin 1, LOGIC GND = Pin 8 BUS GND = Pin 13, 16, 19 BG GND = Pin 20
17
15
14
3
5
8
10
R2
8 9
SF00574
D3 VCC = Pin 1 LOGIC GND = Pin 6 BUS GND = Pin 13, 16, 19 BG GND = Pin 20 14 I/O3
IEC/IEEE SYMBOL
11 12 EN1 EN2 3 18 5 17 7 15 9 9 14
10 R3 11 DE
SF00576
2
1D
2
4
7
SF00575
January 18, 1991
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Philips Semiconductors
Product specification
Quad Futurebus backplane transceiver
74F3893
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) SYMBOL VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in high output state Current applied to output in low output state Operating free air temperature range Storage temperature range PARAMETER RATING -1.5 to +6.5 -1.5 to +6.5 -30 to +5 -0.5 to 5.5 200 0 to +70 -65 to +150 UNIT V V mA V mA
C C
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VIH VIL IIk VTH IOH IOL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current Bus input threshold High-level output current Low-level output current Operating free air temperature range 0 I/On only Rn only 1.475 1.55 Dn, DE, RE PARAMETER MIN 4.5 2.0 0.8 -18 1.625 -3 100 +70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA mA
C
January 18, 1991
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Philips Semiconductors
Product specification
Quad Futurebus backplane transceiver
74F3893
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL IOH VOH VOHB VOL VOLB VOCB VIK II IIH IIHB IIL IILB IOZH IOZL IOS PARAMETER High-level output current High-level output voltage High-level output bus voltage Low-level output voltage Low-level output bus voltage Driver output positive clamp voltage Input clamp voltage Input current at maximum input voltage High-level input current High-level I/O bus current (power off) Low-level input current Low-level I/O bus current (power on) Off-state output current, high-level voltage applied Off-state output current, low-level voltage applied Short circuit output current3 current4 Rn 'F8 Dn, RE, DE I/On Dn, RE DE I/On Rn I/On I/On Rn I/On Rn I/On TEST CONDITIONS1 VCC = MAX, VIL = MAX, VIH = MIN, VOH = 1.5V VCC = MAX, VIL = 1.3V, RE = 0.8V, IOH = MAX VCC = MAX, Dn = DE = 0.8V, VT = 2.0V, RT = 10, RE = 2.0V VCC = MIN, VIN = 1.8V, RE = 0.8V, IOL = 6mA Dn = DE = VIH, IOL = 100mA Dn = DE = VIH, IOL = 80mA VCC = MAX or 0V, Dn = DE = 0.8V, RE = 2.0V VCC = MIN, II =IIK VCC = MAX, VI = 7.0V, DE = RE = Dn = VCC VCC = MAX, DE = RE = Dn =5.5V VCC = 0V, Dn = DE = 0.8V, I/On =1.2V, RE = 0V VCC = MAX, VI = 0.5V, DE = 4.5V VCC = MAX, VI = 0.5V, Dn = 4.5V VCC = MAX, Dn = DE = 0.8V, I/On =0.75V, RE = 0V VCC = MAX, VI = 2.7V, RE = 2V VCC = MAX, VI = 0.5V, RE = 2V VCC = MAX -60 I/On = 1mA I/On = 10mA 0.75 0.75 1.9 2.3 -0.73 2.5 2.5 0.35 1.0 1.0 0.5 1.2 1.1 2.9 3.2 -1.2 100 20 100 -40 -200 -20 20 20 -20 -150 MIN LIMITS TYP2 10 MAX 100 A V V V V V V V V A A A A A A A A mA UNIT
ICC Supply (total) VCC = MAX, (RE = VIH or VIL) 55 80 mA Notes to DC electrical characteristics 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25C. 3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, IOS tests should be performed last.
January 18, 1991
5
Philips Semiconductors
Product specification
Quad Futurebus backplane transceiver
74F3893
AC ELECTRICAL CHARACTERISTICS FOR DRIVER AND DRIVER ENABLE
LIMITS Tamb = +25C SYMBOL PARAMETER TEST CONDITION VCC = +5.0V CD = 50pF, RT = 10 MIN tPLH tPHL tPLH tPHL tTLH tTHL tsk(o) Propagation delay Dn to I/On Propagation delay DE to I/On Dn to I/O transition time 10% to 90%, 90% to 10% Skew between drivers in same package Waveform 1 Waveform 1 Waveform 1 1.0 1.5 1.0 1.5 1.0 1.0 1.0 TYP 2.0 3.0 2.0 3.0 MAX 5.0 5.5 4.5 5.5 4.0 4.0 Tamb = 0C to +70C VCC = +5.0V 10% MIN 1.0 1.5 1.0 1.5 1.0 1.0 UNIT CD= 50pF, RT = 10 MAX 5.5 6.0 5.5 6.0 5.0 5.0 ns ns ns ns
AC ELECTRICAL CHARACTERISTICS FOR RECEIVER
LIMITS Tamb = +25C SYMBOL PARAMETER TEST CONDITION VCC = +5.0V CL = 50pF, RL = 1k MIN tPLH tPHL Propagation delay I/On to Rn Waveform 2 1.0 3.6 TYP 2.0 5.5 MAX 4.5 7.5 Tamb = 0C to +70C VCC = +5.0V 10% MIN 1.0 3.6 UNIT CL = 50pF, RL = 1k MAX 5.5 8.5 ns
AC ELECTRICAL CHARACTERISTICS FOR RECEIVER ENABLE
A PORT LIMITS Tamb = +25C SYMBOL PARAMETER TEST CONDITION VCC = +5.0V CL = 50pF, RL = 500 MIN tPZH tPZL tPHZ tPLZ Output enable time to high or low level, RE to Rn Output disable time from high or low level, RE to Rn Waveform 3, 4 Waveform 3, 4 1.5 2.5 1.5 1.5 TYP 3.0 4.0 3.0 3.0 MAX 5.5 7.0 5.5 5.5 Tamb = 0C to +70C VCC = +5.0V 10% MIN 1.5 2.0 1.0 1.0 UNIT CL = 50pF, RL = 500 MAX 6.0 7.5 6.5 6.0 ns ns
January 18, 1991
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Philips Semiconductors
Product specification
Quad Futurebus backplane transceiver
74F3893
AC WAVEFORMS
DE, Dn VM tPHL 2V I/On 1V VM tTHL VM tPLH 90% 10% VM 90% tTLH 10% Rn RE VM tPZH VM 0V VM tPHZ VOH -0.3V
SF00579 SF00577
Waveform 1. Propagation delay for driver
Waveform 3. 3-state output enable time to high level and output disable time from high level
2V I/On VM tPHL Rn VM VM
RE
VM tPZL
VM tPLZ VM
1V
tPLH Rn VM VOL +0.3V SF00580
SF00578
Waveform 2. Propagation delay for receiver
Waveform 4. 3-state output enable time to low level and output disable time from low level
Notes to AC waveforms 1. For all waveforms, VM = 1.5V. 2. The shaded areas indicate when the input is permitted to change for predictable output performance.
TEST CIRCUITS AND WAVEFORMS
SWITCH POSITION TEST SWITCH tPLZ, tPZL closed All other open
VIN PULSE GENERATOR RT D.U.T. tTLH (tr ) CL RL POSITIVE PULSE 10% 90% VM tw tTHL (tf ) AMP (V) 90% VM 10% Low V 90% 7.0V VOUT RL NEGATIVE PULSE VM 10% tTHL (tf ) tw VM 10% tTLH (tr ) Low V 90% AMP (V)
VCC
Test circuit for 3-state outputs on D port
VCC 7.0V
Input pulse definition
VIN PULSE GENERATOR RT D.U.T. VOUT RT
INPUT PULSE REQUIREMENTS family amplitude Low V
CD
VM 1.5V
rep. rate 1MHz
tw
tTLH
tTHL 2.5ns 4.0ns
D port
3.0V
0.0V
500ns 2.5ns 500ns 4.0ns
I/O port 2.0V 1MHz 1.0V 1.5V Test circuit for outputs on I/O port DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RU = Pull up resistor; see AC Electrical Characteristics for value. CD = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
SF00581
January 18, 1991
7
Philips Semiconductors
Product specification
Quad futurebus backplane transceiver
74F3893
PLCC20: plastic leaded chip carrier; 20 leads
SOT380-1
1991 Jan 18
8
Philips Semiconductors
Product specification
Quad futurebus backplane transceiver
74F3893
NOTES
1991 Jan 18
9
Philips Semiconductors
Product specification
Quad futurebus backplane transceiver
74F3893
Data sheet status
Data sheet status Objective specification Preliminary specification Product specification Product status Development Qualification Definition [1] This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
Production
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. print code Document order number: Date of release: 10-98 9397-750-05206
Philips Semiconductors
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